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76Mantra455

  • Karma: +7/-0
455 Olds Refresh
« 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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TrollerDave

  • Karma: +32/-0
Re: 455 Olds Refresh
« Reply #1 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.
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69kona

  • Karma: +13/-0
Re: 455 Olds Refresh
« Reply #2 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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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #3 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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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #4 on: October 26, 2022, 08:31:23 pm »
Motor is pulled and in the truck? headed down south Saturday


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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #5 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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TrollerDave

  • Karma: +32/-0
Re: 455 Olds Refresh
« Reply #6 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?

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mscatena

  • Karma: +5/-0
Re: 455 Olds Refresh
« Reply #7 on: October 31, 2022, 11:06:01 am »
that engine pull was quick and easy, no real surprises except all the LOOSE bolts!  :o
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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #8 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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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #9 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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76Mantra455

  • Karma: +7/-0
Re: 455 Olds Refresh
« Reply #10 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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