C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What Engine to Build?

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Old Oct 3, 2009 | 10:41 AM
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Default What Engine to Build?

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Last edited by Pete K; Jun 12, 2011 at 11:13 AM.
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Old Oct 3, 2009 | 11:53 AM
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One of our guys at the Corvette Challenge series at Etown, NJ is running a "stock" cube block in his 89, TPIS ported "113" heads, TPIS cam, TPIS Mini Ram, Hooker headers into Hooker Y pipe thru Flowmaster mufflers, Dana 44 w/3.73's and a high stall converter although I don't know stall speed or brand, and he runs 11.2's @ 121 in the cooler weather and 11.4's @ 119 in the summer. I know your combo is different, cubes and such, but he drives the car from NY to NJ for each race and still gets the performance area your looking for. A combination of both should easily get you where you want to be.


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Old Oct 3, 2009 | 12:14 PM
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Originally Posted by Red98C5
One of our guys at the Corvette Challenge series at Etown, NJ is running a "stock" cube block in his 89, TPIS ported "113" heads, TPIS cam, TPIS Mini Ram, Hooker headers into Hooker Y pipe thru Flowmaster mufflers, Dana 44 w/3.73's and a high stall converter although I don't know stall speed or brand, and he runs 11.2's @ 121 in the cooler weather and 11.4's @ 119 in the summer. I know your combo is different, cubes and such, but he drives the car from NY to NJ for each race and still gets the performance area your looking for. A combination of both should easily get you where you want to be.


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I think that would be Vic's car.

Pete:

Sounds like you may have "sprayed" the rings on the old motor a little too much. Hone it, re ring it, or sell it as a low 12's motor that needs ring/bore work.

1 vote for the 406 install.

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Old Oct 3, 2009 | 01:31 PM
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Originally Posted by Pete K
Unfortunately, I did not have a chance to spray this motor.
When I first assembled it, I got about 100 miles on it, and a defective crank came to light. I ripped it down, swapped the crank, and put it back together. The rings never did seem to seal right.
Wow - sucks to have to tear a new one down again....been there done that. Few years back, had just finished an engine rebuild and was minutes from dropping it in the car. The engine was up on a rolling engine hoist had a local neighborhood kid come over and lean/pushed on it and the whole thing fell foward from about 3' high and bent the crank snout upon impact

Were the bores deglazed properly?

Last edited by engle1147; Oct 3, 2009 at 01:36 PM.
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Old Oct 4, 2009 | 08:37 AM
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Pete,

Before you build another engine, or go back through the one you have, I'd like to help you with the blow-by problem. I've had similar experiences. I originally built a .060" over 350 for my '85. It made great power (346rwhp), ran hard, etc., but I had excessive blow-by. It smoked, burned oil, the oil got black quickly after a change, etc.

Well, I resolved the issue. I'll send you a PM.

Dan
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Old Nov 16, 2009 | 08:17 PM
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Big Block....I'm just sayin......
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Old Nov 16, 2009 | 08:41 PM
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Another vote for the 406. After reading about your build, I just assumed it was going in the car. I'm axious to see how it runs.
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Old Nov 17, 2009 | 12:22 AM
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None of the above. Go on a vacation young skywalker to HAWAII, and rebuild a transmission for Steve40th.
J/K
406 with AFR. My 2 cents.
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Old Nov 17, 2009 | 02:49 PM
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Originally Posted by Pete K
It definately is going in. 406 with 195 AFR Eliminators and the superram.
Not till spring, but without a doubt 406. On paper, it is a winner. We'll see once it is in and tuned.
I Pete, I vote for a new 396
You are an expert on 396 ci SBC. Mine has never burned a drop of oil.
-Beppe-
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Old Nov 17, 2009 | 03:57 PM
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Originally Posted by Pete K
It definately is going in. 406 with 195 AFR Eliminators and the superram.
Not till spring, but without a doubt 406. On paper, it is a winner. We'll see once it is in and tuned.
How about the Jeb SP instead of the SR? I'm thinking it may soften it up down low and add some toward the top, the overall effect being a flatter, broader torque curve.
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Old Nov 17, 2009 | 04:40 PM
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Build a 355, forged internals, ported AFR 195 heads, moderate cam (with a tad more duration on the exhaust side) .

cubes and gears won races 20 years ago, not today.

psi boost wins races today.

elsewise why do 4 cylinder evo's run 11.3@122 MPH and beat me.

If you go big cu. inch, go forged internals, and a moderate 9.5:1 compression ratio so you can slam 14 psi into there - if funds permits for an S/C in the future.

Seriously, invest some money in the stock market, real estate, or something and go boost. There is no other way.

Last edited by dizwiz24; Nov 17, 2009 at 04:43 PM.
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Old Nov 17, 2009 | 09:52 PM
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My vote is for the 406 with AFR'S thats what I am building right now.I plan on running the Holly Stealth Ram on top.
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