SoCal Jet Boats

Discussion => The No Wake Zone => WarZone => Topic started by: 76Mantra455 on September 15, 2022, 06:53:55 PM

Title: 455 Olds Refresh
Post by: 76Mantra455 on September 15, 2022, 06:53:55 PM
Well after the next trip the Olds is getting pulled out? I have a shop that I?m taking it to already but would like some opinions since I?ve been waiting to have the motor done for almost 5 years. Things I know are done? bored 40 over, big valve C heads original from late 60s, air gap intake manifold, total hours as of right now 100 on it going to put a few more in October. What was told to me from original owner?. Bored 40 over rebuilt with a stroker kit?. So my question is I have roughly 5k to put it? already have 1900 towards new roller cam matched to my pump which is a AA aggressor, valve job, lifters and springs? what would y?all do with the rest? I run a edelbrock 800 carb? I?m going with roller rockers to already? should I go with higher compression pistons? I?m for sure going to listen what the builder says but would like to hear other opinions so I can ask the good questions. Right now I am spinning the AA to 5000rpm reliably?.and the pump is fresh with only 10 hours on it? I would like to gain anywhere from 500 to 700 rpm don?t know if that is too much to ask? well maybe we can start a thing that says ditch the olds sell it and put a BBC in it lol


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Title: Re: 455 Olds Refresh
Post by: TrollerDave on September 18, 2022, 12:14:46 PM
Going off of the Olds article, Do you know what Olds oiling mods have been done?

Another thing from the article, is the divider between the center exhaust ports on the heads. It doesn?t meet flush with the header flange and has a gap from port to port. They fill it in and grind it to have a nice flat area for the exhaust to hook up to.

I don?t think he gets on here to much anymore, but 69 Kona had a pretty good running Olds. Maybe send a pm and see if you can pick his brain.
Title: Re: 455 Olds Refresh
Post by: 69kona on October 15, 2022, 01:45:37 PM
Going off of the Olds article, Do you know what Olds oiling mods have been done?

Another thing from the article, is the divider between the center exhaust ports on the heads. It doesn?t meet flush with the header flange and has a gap from port to port. They fill it in and grind it to have a nice flat area for the exhaust to hook up to.

I don?t think he gets on here to much anymore, but 69 Kona had a pretty good running Olds. Maybe send a pm and see if you can pick his brain.
Thanks bud ? the new 461ish olds in our grape boat is high 80?s all motor .
Love helping out guys build their olds when I can .  Looks like you got him on the right track with the oiling stuff.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on October 18, 2022, 12:38:59 PM
Going off of the Olds article, Do you know what Olds oiling mods have been done?

Another thing from the article, is the divider between the center exhaust ports on the heads. It doesn?t meet flush with the header flange and has a gap from port to port. They fill it in and grind it to have a nice flat area for the exhaust to hook up to.

I don?t think he gets on here to much anymore, but 69 Kona had a pretty good running Olds. Maybe send a pm and see if you can pick his brain.
Honestly no idea what mods have been done except the original owner said there is restrictors in it? oil pressure stays good and only running a regular oil pan of 5 quarts. After a long run the pressure drops to about 25 to 30 but comes back up.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on October 26, 2022, 08:31:23 PM
Motor is pulled and in the truck? headed down south Saturday


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on October 29, 2022, 02:58:04 PM
Well today dropped the motor off and already can?t wait till I have the boat on the water.


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Title: Re: 455 Olds Refresh
Post by: TrollerDave on October 29, 2022, 04:56:24 PM
Well today dropped the motor off and already can?t wait till I have the boat on the water.


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Have you figured out what changes/modifications are going to be made?

Are you planning on getting a larger oil pan?

Title: Re: 455 Olds Refresh
Post by: mscatena on October 31, 2022, 11:06:01 AM
that engine pull was quick and easy, no real surprises except all the LOOSE bolts!  :o
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 01, 2022, 06:22:45 PM
Have you figured out what changes/modifications are going to be made?

Are you planning on getting a larger oil pan?
Well what has been discussed is head work or go aluminum heads? going to go with a msd distributor? hydraulic roller cam, lifters, rockers?. Check compression leak down? modify oil pan for more capacity? may or may not change pistons? dyno tune it? and once dyno has a done have the impeller cut to match if needed. I let the builder know my budget and what I would like to get to? so we shall see what direction we go on heads either port what I currently have and update valves and stuff but may be cheaper to go aftermarket route.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 01, 2022, 06:24:47 PM
that engine pull was quick and easy, no real surprises except all the LOOSE bolts!  :o
I?m still n disbelief in n how the bolts were loose?.. and they were not loose because I run it hard or what ever? they were just not put in and torque correctly


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 11, 2022, 07:02:15 PM
Well 2 weeks now without the boat motor? gezzz if it was in the boat I would be headed to the river?


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 12, 2023, 02:01:30 PM
Well motor is coming along great, have my old rotating assembly if anyone would had a need for it. Going with a 495 kit, eagle crank, scat rods, mahle pistons, roller cam, aluminum heads etc.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 13, 2023, 07:52:55 PM
Oh the pump was burnt out even though it was recently rebuilt? long story short is MPD has gone thru it and detailed it? my impeller that had only 25 total hours after rebuild was shot? so waiting on dyno sheet to cut new impeller to the motor? mpd also machine the diverter to mess with tuning nozzles? can?t wait to get it all back together.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on March 03, 2023, 07:18:46 AM
Went down yesterday morning before work to pick up new headers


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Title: Re: 455 Olds Refresh
Post by: Roadrunner on March 03, 2023, 05:39:07 PM
I had the same issue with my pump from that shop I won?t name. Not trying to start fires here. I really don?t care anymore. Here is my story. Spent a large sum of money for an energizer pump. Towed my boat all the way up there. Left it. Drive all the way back to get it. I really liked the family and the job they did. First run, the pump was ruined. Didn?t even run the boat hard. My friend has his newborn baby on-board. When I called the shop I was accused of running the pump dry for the cause of failure. My option given was to pull it out, ship it to him, then go from there. Something didn?t seem right so I had a different shop go through it instead. Upon disassembly discovered that my pump didn?t have the AT energizer kit. It had his knock off parts in it and was assembled with tolerances too tight. Could only re-use the impeller shaft after one run. That?s it. Also, the transition inside the suction was horrendous Jacuzzi YJ. It wasn?t filled or smoothed at all.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on March 03, 2023, 05:46:22 PM
Yeah same here ? pretty much same thing happened to me? and my other bud? but oh well all I can say is it is being done right ? can?t wait to see how well it performs with all the work going into the pump and motor. Once I get everything back I will post pictures and videos of it on the water..


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Title: 455 Olds Refresh
Post by: Roadrunner on March 03, 2023, 06:22:12 PM
Best of luck to you. My boat absolutely hauled ass after the pump was built right. Kind of funny regarding your Olds motor parts. If you need parts, shops and people charge top dollar. If you have parts, you practically have to give them away. I was never able to get my Olds to last. Went through 5 of them. I also was the guy that got your Hawaiian sold. It?s in a good home now. Has a new motor and lots of work done. My co worker bought it.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on March 03, 2023, 06:28:23 PM
Nice yeah Trevor cool people?. Yeah my olds has lasted just decided to go all out with it finally? DNE has been building it for me? we are going for 600 horsepower in it ?


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on March 03, 2023, 06:31:02 PM
Best of luck to you. My boat absolutely hauled ass after the pump was built right. Kind of funny regarding your Olds motor parts. If you need parts, shops and people charge top dollar. If you have parts, you practically have to give them away. I was never able to get my Olds to last. Went through 5 of them. I also was the guy that got your Hawaiian sold. It?s in a good home now. Has a new motor and lots of work done. My co worker bought it.


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Thank you! I loved that boat but it was either put the money into the day cruiser for motor work or into my Mantra? had to go with the Mantra it means too much to me ?the day cruiser ran great for a handful of trips!


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 07, 2023, 08:59:58 AM
Got the crank and rods in


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 07, 2023, 04:40:40 PM
Anyone need a set of 455 olds Bassett long tube headers?


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 30, 2023, 06:26:59 PM
Went and picked up the pump today and went by the shop and seen the pistons they came in this week.




Just waiting on the main caps for the machine work to be done. The olds is no longer going to be a 2 bolt it will be a 4 bolt so at least that will add strength to the block.


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Title: Re: 455 Olds Refresh
Post by: 77fordwind on May 01, 2023, 04:34:44 AM
Hell yeah that's some serious hardware

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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 01, 2023, 06:42:41 PM
Yeah I?m getting anxious to get on the water. Just waiting on the 4 bolt main caps for the olds so then the machine work can be done then assemble


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 16, 2023, 06:25:11 AM
Oil pan is in? getting close
Also have 2 different carbs going to have refreshed and tried on motor when on dyno. 850 Holley and 850 Demon


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 01, 2023, 07:20:04 PM
Well the oil pan that was sent was incorrect even though purchased correct one. So have to change the front mount setup just purchased that and is being shipped. Not letting wrong oil pan stop from being on the water asap.


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Title: Re: 455 Olds Refresh
Post by: 75 fantasy on June 01, 2023, 07:54:52 PM
Yeah I bet you?re itching get the boat wet!


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 03, 2023, 05:56:37 PM
Yeah this has been a long 7 months but I know it will be worth it. Also for carb going to run the 850 demon. Still need to do a few things to the boat to get it race ready. Need to get a battery shut off, rope guard, and lanyard kill switch.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 07, 2023, 06:14:47 PM
Got some more pieces in today?


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 23, 2023, 10:20:07 PM
Well went down and dropped off the front plate today. So numbers horsepower wise are looking to be around 650 or so. That would be cool if it was the dyno will tell


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 30, 2023, 09:13:44 PM
More parts in


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on July 04, 2023, 02:29:01 PM
And more for the pump


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on July 23, 2023, 05:34:18 PM
The Mantra is starting to come together. Got the pump in and loader. Leaving the nozzle off till we get the motor in.   


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on July 23, 2023, 08:28:08 PM
Lifters are in


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on July 24, 2023, 11:34:56 AM
what brand you running?

I always wanted to go roller lifter on my 442 but its pretty steep still for olds....
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on July 26, 2023, 04:53:02 PM
They are Howard solid mechanical lifters.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on August 28, 2023, 11:42:55 AM
Well everything is balanced all parts are in except main caps now they are being custom made for the block. Just fyi if anyone ever needs new main caps for a 455 olds the milodon 455 olds caps do not fit unless they did not drill the holes correctly from the factory?


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on August 28, 2023, 01:29:11 PM
Well everything is balanced all parts are in except main caps now they are being custom made for the block. Just fyi if anyone ever needs new main caps for a 455 olds the milodon 455 olds caps do not fit unless they did not drill the holes correctly from the factory?


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Thats wild, what about the caps didnt fit?
Title: Re: 455 Olds Refresh
Post by: Zdav419 on August 30, 2023, 06:23:27 PM
Well after the next trip the Olds is getting pulled out? I have a shop that I?m taking it to already but would like some opinions since I?ve been waiting to have the motor done for almost 5 years. Things I know are done? bored 40 over, big valve C heads original from late 60s, air gap intake manifold, total hours as of right now 100 on it going to put a few more in October. What was told to me from original owner?. Bored 40 over rebuilt with a stroker kit?. So my question is I have roughly 5k to put it? already have 1900 towards new roller cam matched to my pump which is a AA aggressor, valve job, lifters and springs? what would y?all do with the rest? I run a edelbrock 800 carb? I?m going with roller rockers to already? should I go with higher compression pistons? I?m for sure going to listen what the builder says but would like to hear other opinions so I can ask the good questions. Right now I am spinning the AA to 5000rpm reliably?.and the pump is fresh with only 10 hours on it? I would like to gain anywhere from 500 to 700 rpm don?t know if that is too much to ask? well maybe we can start a thing that says ditch the olds sell it and put a BBC in it lol

Hey guys im new to carburetors and big block and im fixing up an olds 455 for a jet boat and theres a part that i have no idea what it is and i was hoping someone knows and could help me out. As you can see the plastic on it is broken and it seems to be something that has vaccum

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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on August 31, 2023, 10:20:54 AM
Hey there,

That is just the oil pressure sending unit.  is your oil pressure gauge working?  your sender wire just goes in between the nuts on top.
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 04, 2023, 07:24:22 AM
Yes that?s correct that?s the oil pressure sending unit


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 07, 2023, 06:53:58 PM
Have the cam specs for the build
405 TCO lobe lift is .668 with .016 lash for solid mechanical roller will come to .652
Intake 262 exhaust 270
109 lsa
Head flow @ .600 254 intake 195 exhaust


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on September 08, 2023, 08:55:41 AM
Have the cam specs for the build
405 TCO lobe lift is .668 with .016 lash for solid mechanical roller will come to .652
Intake 262 exhaust 270
109 lsa
Head flow @ .600 254 intake 195 exhaust


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Damn, thats a lot of duration even for a 496.  What are you expecting for HP peak?  im thinking it will come in around 6300
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 08, 2023, 09:55:39 AM
Yeah we are trying to maximum to flow of the head. We all know you can only push so much air thru them. After talking with the builder we are shooting for around 5900 or so. This is not the average 455 build lol. I?m excited to see what it actually does. A similar build was right at 5600 and 628 hp that had less cam and air fuel was lean


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on September 08, 2023, 12:17:30 PM
Edelbrock heads?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 08, 2023, 01:04:46 PM
No the speedmaster heads is what we went with. We have had them checked over and are very good quality. And has them massaged a little


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on September 08, 2023, 01:56:31 PM
No the speedmaster heads is what we went with. We have had them checked over and are very good quality. And has them massaged a little


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running them as cast or puting a little port work on them?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 08, 2023, 04:57:49 PM
Little port work valve job flowed etc? they were purchased bare and have put them together with the parts we needed to make it work the way we wanted


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 08, 2023, 05:53:19 PM
We can always port them more later on if needed but with what we have done they should work very well


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 16, 2023, 04:21:01 PM
Cleaned the tanks up today and finally put the correct brackets on


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on September 21, 2023, 06:03:33 PM
The new main caps came in so back to machine the block and get it together!!! Man I can?t wait to see how this thing does


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on October 05, 2023, 07:21:11 PM
Balance card


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 11, 2023, 05:10:16 PM
Last piece to the build


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Title: Re: 455 Olds Refresh
Post by: 75 fantasy on November 11, 2023, 08:26:26 PM
When does the motor get fired up? Are you going to just drop it in or take it to a dyno?


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 11, 2023, 08:28:36 PM
I?m going to have it dyno tuned before dropping it in. We are trying to get close to 700hp out of it, and still be reliable


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 11, 2023, 08:29:08 PM
Motor being pre fitted this week then final assembly


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Title: Re: 455 Olds Refresh
Post by: 75 fantasy on November 11, 2023, 11:59:25 PM
Right on!


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 18, 2023, 11:49:28 AM
A few pictures of the olds


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on November 30, 2023, 02:15:10 PM
Moved the boat from a barn to an enclosed storage. Now have room for my camping gear and jet boat stuff


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on December 01, 2023, 09:04:00 AM
Cam has been measured and documented


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on December 06, 2023, 01:05:37 PM
I like the black valves cover look on the aluminum heads


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on December 06, 2023, 03:23:51 PM
Best of Luck!  700 is going to be quite the push.   I am going to say 630 or so with the heads the way they are. but i hope im wrong. Where are you going to dyno at?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on December 06, 2023, 03:27:09 PM
Going to be dyno tech in placentia


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on December 06, 2023, 03:27:55 PM
This is a one off build that DNE Motorsports is doing for a olds? we went all in on this one


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on December 06, 2023, 03:57:25 PM
did they stay with 2.07 / 1.72 valves?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on December 06, 2023, 04:48:51 PM
2.070 intake and 1.680 exhaust


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Title: Re: 455 Olds Refresh
Post by: bluthndr on February 04, 2024, 06:31:59 PM
Any news?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 04, 2024, 07:06:34 PM
Good evening, we should be having it ready for dyno this month. We just had the baby last week he came a little early so been up at the hospital for the better part of last 10 days. He is doing great and should be able to come home in a few weeks. But soon as I get some more pictures of the progress I will post them.


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on February 05, 2024, 08:21:13 AM
Congratulations! 
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 15, 2024, 01:20:38 PM
Thank you. Update on build? planning on dyno in March. I honestly can not wait to get the boat back on the water.
Title: Re: 455 Olds Refresh
Post by: 75 fantasy on February 17, 2024, 05:49:45 AM
Congratulations on the addition to your boat crew!


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 17, 2024, 06:54:14 AM
Good morning thank you. He?s a little jet boat baby.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on February 29, 2024, 12:38:54 PM
This past Sunday was great weather to cut and buff the Mantra. Only thing left to do is put new tach in, hour meter, oil temp gauge and of course the motor.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 05, 2024, 04:59:48 PM
Well the olds is being assembled this coming week. A lot has gone into this build. We are already booked for the Mother?s Day event. I will post pictures soon.


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on April 08, 2024, 03:38:25 PM
Patiently waiting for updates  8)
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 20, 2024, 05:54:27 PM
Got the rails in for the front plate, the water solenoid, rpm timer, tach, and oil temp, and the rest of the pump installed today


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on April 22, 2024, 03:08:55 PM
making good progress!
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 26, 2024, 01:12:27 PM
Thank you, today getting the battery charged up and another coat of wax on it.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on April 27, 2024, 02:16:30 PM
Here are pics from yesterday


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 01, 2024, 06:49:01 PM
Scoop is done


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 05, 2024, 01:34:34 PM
Not making the Mother?s Day trip we will be dyno the motor this weekend


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on May 09, 2024, 07:38:57 AM
Good luck!  Should be fun. 
Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on May 13, 2024, 12:51:14 PM
Ok man enough time already, we need info! hahaha


hope the weekend went well!
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 13, 2024, 03:14:06 PM
Hahahaha right me too!!! No dyno yet pushrods will be in tomorrow. Trust me I?m itching to get this thing done and in the boat.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 19, 2024, 05:21:30 PM
Here is a few pictures for a update


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on May 30, 2024, 07:28:35 PM
Going Saturday to dyno


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 03, 2024, 09:34:05 AM
Good morning!

Did the beast come alive??  Wishing all the best  :beer:
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 03, 2024, 09:41:22 AM
Yes we tested and dyno this weekend. Had some more things to do so pick it up Wednesday. It?s a beast alright 680 ft pounds of torque at 4000 and right at 617 at 5300 but keeps spinning. We shut it down at 5700 rpm. There is a little bit more power we can get out of it this week.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 03, 2024, 09:45:04 AM
And it weighs in at 550 pounds with the engine cradle and front mount? good morning


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Title: Re: 455 Olds Refresh
Post by: 75 fantasy on June 04, 2024, 02:35:35 PM
Dude, I bet you can?t wait to get it in the boat!


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 04, 2024, 06:58:55 PM
https://youtube.com/shorts/InMxs8ZN2Uo?si=iz-mm4Zuxbs0UZE8


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 04, 2024, 06:59:50 PM
https://youtube.com/shorts/HJ9eea-OFMc?si=hXhzmKb8yafpaXIy


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 04, 2024, 07:00:34 PM
Dude, I bet you can?t wait to get it in the boat!


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I can not? I?m counting the minutes till this weekend


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Title: Re: 455 Olds Refresh
Post by: mash on it on June 05, 2024, 10:07:34 AM
That thing sounds super rowdy

Yes, yes it does.

Just finishing up my SBC fishin bote mota, Ill be lucky to have HALF the HP and torques of your mill.

Well done.

Dan'l
Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 05, 2024, 01:24:41 PM
Awesome man! happy for you.  I know it was a lot of work and waiting to get here.  Sounds strong and clean on the pulls
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 05, 2024, 06:15:55 PM
Thank you we will be putting it in next week I will post more pictures? it?s pretty rowdy for not your average olds. I will also post specs too


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 06, 2024, 08:41:22 PM
Had to get another mechanical fuel pump the one we had ain?t going to do the job will be here Saturday? plan is to be at the Avi for fathers day


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 07, 2024, 11:41:28 AM
Was the fuel pressure running out up top?  Is that why you said you thought you could get a little more out of it this week?  Did you get a chance to get more tuning done?

Makes me want to yank the 455 out of my 69 olds 442 and add another 100 hp to it hahaha
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 07, 2024, 09:06:48 PM
Well I have a dual plane intake even though it has been ported and machine by Wilson manifolds it just runs out at 620hp and it?s happy there.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 08, 2024, 08:28:14 PM
Got some work done on it today


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 08, 2024, 08:29:20 PM
A few more


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 09, 2024, 04:44:33 PM
Got most of the plumbing done today. Got new fuel pump on, oil pressure, header lines. All that is left is exit water and wire it up and alternator installed.


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 10, 2024, 11:36:16 AM
Ya im not thinking the manifold is limiting anything.  I think the heads are limiting.   Boat is looking great!  bet it will be a blast with the AA impeller.   Is there a certain MPH you are shootin for?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 10, 2024, 11:38:24 AM
Have a detailed A from mpd with inducer, bowl has been detailed same as nozzle. I honestly don?t know what mph I will get to.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 13, 2024, 09:55:59 PM
We freaking made it to the Avi
!!! Had to switch out the whole fuel delivery at Elsinore today. We worked on it for hours trying to get the mechanical pump going got no success. We called everywhere and found a Holley blue electric and we wired and plumbed it in the parking lot. Got to love zip ties.


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 14, 2024, 08:33:21 AM
Congratulations! boats looking sweet.  Enjoy the weekend.  I cancelled my trip to havasu this weekend because the DIY pool reno taking too long. 
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 14, 2024, 08:39:28 AM
Thanks!!! Still looks good for cosmetic original for a 76


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 15, 2024, 09:19:44 PM
Had a great time boat ran great till a freeze plug popped out ? limped it back the the beach then got it on trailer


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 18, 2024, 01:18:37 PM
Look at that future jet boater in the making! haha

Wonder if the new pump work increased the water pressure going into the block.  Do you have a pressure gauge in the system?  Did the plug pop out cruising or more "spirited" driving?
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 18, 2024, 07:18:06 PM
Popped out during cruising have not really got on it yet? it must of been a faulty plug just got done putting another one in. The brass ones don?t fit very snug. I?m also routing 2 individual water dumps instead of 2 into 1? 2 5/8 inch dumps should be plenty to relive any pressure


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 22, 2024, 09:31:43 PM
Took the old mantra out today the double water dumps kept oil temp down and no freeze plug popped out. Got the water dialed in with the rpm timer. Seems like we are done testing and ready to have fun.


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Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on June 22, 2024, 09:58:55 PM
Took the old mantra out today the double water dumps kept oil temp down and no freeze plug popped out. Got the water dialed in with the rpm timer. Seems like we are done testing and ready to have fun.


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Title: Re: 455 Olds Refresh
Post by: 96Laveycraft21Xt on June 24, 2024, 08:56:43 AM
Took the old mantra out today the double water dumps kept oil temp down and no freeze plug popped out. Got the water dialed in with the rpm timer. Seems like we are done testing and ready to have fun.


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What lake are you at?  Are you running an oil cooler?   Ive never had an oil temp sensor in my boats so im not sure what temps i get to
Title: Re: 455 Olds Refresh
Post by: 76Mantra455 on July 04, 2024, 01:16:34 PM
We are at buena vista. No oil cooler we just monitor the oil temp so far it has not got hotter then 180. I did a 6 second send got to almost 80 and that was in choppy water


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Title: 455 Olds Refresh
Post by: 75 fantasy on July 05, 2024, 07:34:58 AM
Dude, all your hard work is paying off!


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