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

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Old Sep 25, 2004 | 12:03 PM
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St. Jude Donor '05
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Im building a new engine for my 86,bored it 030 over,with a .449 intake .456 exhaust gross lift cam (comp cam part # 12-256-4)and the recomended springs,match ported heads and intake,5 angle valve job,with 1.6 roller rockers.No cats and flow master mufflers.just wondering if anybody would know what kind of HP I can expect
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Old Sep 25, 2004 | 12:14 PM
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1282 HP, but only on a cloudy day. ??????

RACE ON!!!
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Old Sep 25, 2004 | 12:24 PM
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Sweet I sould have bought better tires
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Old Sep 25, 2004 | 12:42 PM
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I wouldn't expect miracles due to to the dinky cam.

My guess would be 260-270 FWHP
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Old Sep 25, 2004 | 01:20 PM
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I didn't want to go big .It's going ot be driven daily and gas is outragous.Just wanted to give it a little more dependable power.And it has to pass emitions.
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Old Sep 25, 2004 | 03:03 PM
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Well, you might gain about 15chp from the cam, maybe 10chp from the heads work (assuming they are not touching the bowls), ??? from the bore, and maybe 10chp from the exhaust work (assuming you still have the stock pre-cats and the stock cat).

This also assumes you have done no work on the intake, nothing with the T-stat nor with fuel delivery nor the chip.
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Old Sep 25, 2004 | 09:31 PM
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Get rid of that iron head and slap on a set aluminum head with 2.02/1.60 you can get this from Summit for a hair over $1000. Don't use that baby *** cam. You can use LPE219 cam without the use of the super ram and it still make good hp and pass emission. Or LPE 211/219 cam.


Bruce
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Old Sep 25, 2004 | 10:22 PM
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what about a set of long tube's
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Old Sep 27, 2004 | 07:58 PM
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Originally Posted by Bruce
Get rid of that iron head and slap on a set aluminum head with 2.02/1.60 you can get this from Summit for a hair over $1000. Don't use that baby *** cam. You can use LPE219 cam without the use of the super ram and it still make good hp and pass emission. Or LPE 211/219 cam.


Bruce
I also have two LT1 cores that I plan on building a 383 stroker out of.Then I,ll find a beat up C4 and build a beast.Lite and fast no a/c no b/s just full race.
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