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Engine Buildups in progress Tell us what your latest project is, and post a few pics.

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Old 09-17-07, 03:54AM   #16
g-man65
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gach master....your killin' me....
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Old 09-17-07, 11:36AM   #17
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Thanks Jarrett. Mile high cost the points lead in both divisions. A transmission a pass there. thanks allison transmissions.
We are looking at trying the dodge trans, but with a custom bellhousing to get a larger convertor. At least the dodge trans if it breaks is half the work to fix, 125 lbs. lighter and half the money. The good thing on the allison is the big convertor. the bad things on the allison....we don't have that much room here. The truck after last night is as ready as we can get it for the Houston meet. (we are not even going to start it except to load it in the trailor before then!!). ATS sent us another trans Thursday, so that will be another back up. Doggone allisons, if you get one trans to almost shift, then it breaks, the next trans is completely different for programming. What was they thinking?

As for a 505 in your 69, that's a good idea. Those trucks are not light. Tell us about it.
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Old 09-18-07, 03:21AM   #18
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Quote:
Originally Posted by Gach View Post
Jarrett, what a killer idea putting a Pontiac in a what looks like
a 1950's or early 60 Chevy pick-up, those things are solid.
The 505CI engine Im running in my trucks is a 505 CHEVY. Consists of a factory 454 block bored +.100'' which = 4.350, a scat cast 4.25'' stroker crank, stock 454 truck rods 6.135'' long, Ported truck iron oval heads that flow 322CFM @ .600''. The engine made 661 HP, @5700RPM, and 690LBS of torque @ 4100RPM on pump gas. Has run 10.01 @ 133MPH @ sea level in a 3500LB 1970 camaro when fresh. I than ran it in my 69 2wd pickup for a few months. Ran 10.79. @4000LBS The truck wasn't really optimized (1.52) 60' . Then I stuck it in the 1970 4x4 and that is where it has stayed for the last 2 years. I would however run a pontiac in one of my trucks! But I have a 65 GTO for that.
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Old 09-23-07, 02:42AM   #19
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My Dyno session got postponed until monday My engine has been ready since last sunday.
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Old 09-23-07, 05:57PM   #20
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Yep, mine is tomorrow morning, postponed from from Fri.
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Old 09-23-07, 05:59PM   #21
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Don't know why I thought the 389 was going into the truck, guess
I should have read your first post a little closer...LOl
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Old 09-26-07, 04:02AM   #22
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Quote:
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Don't know why I thought the 389 was going into the truck, guess
I should have read your first post a little closer...LOl
No problem.
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Old 09-26-07, 05:32AM   #23
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Default Well Finally!

Just got done, and Im extreamly tired. Was alot of work getting engine set up on the dyno. All day was a non stop thrash. All and, all I think the hard work paid off. The engine fired up without any issues, no leaks(was my biggest fear due to the rough sheetmetal) This was my first pontiac on the dyno, and there were more than a half dozen forgoten more than I'll ever knows curtiquing my engine. Looking for any reason to bag on my little pontiac. After the 1st pull it all stopped. Some one even thought it was a 455! The engine is suprisingly streetable. Idle is @ 900-950 rpm with 13''HG. Made the best numbers on 110 octane, but still made 497HP on 91 octane Shell pump gas. Some may try to argue with the numbers, but actually this is a really stingy dyno. The 541HP 383 SB chevy(same dyno) I did a few months ago just ran 10.70's in a 3400LB 67 camaro.(@ close to sea level). Sorry this sheet is hard to read.
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Old 09-26-07, 05:40AM   #24
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Last edited by jarrett : 09-26-07 at 06:12AM.
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Old 09-29-07, 02:33AM   #25
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Good job on the 389 !!! Was you surprised by the numbers?
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Old 09-30-07, 03:27PM   #26
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Quote:
Originally Posted by GET IT ON View Post
Good job on the 389 !!! Was you surprised by the numbers?
Thanks! I was a little suprised. It really ran well considering the weight of the rotating assembly, and head flow compared to a similar set up 406CI small block chevy my partner built a few months ago. The SB chevy had ported vortec heads flowing 260CFM, and more compression, but ran an aggressive HYD flat tappet with a 1.6 rocker. The chevy made 513 HP, but made less torque. Everyone was supprised how much torque the little 389 made, and how flat the curve was. All in all this engine was alot of work, but in the end I think the hard work paid off.

Last edited by jarrett : 09-30-07 at 04:27PM. Reason: spelling
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Old 04-21-15, 03:04AM   #27
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Bump on a old thread. Did you ever run this combo on the track?
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