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

Std. Deck Height ?

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Old Mar 17, 2003 | 04:44 PM
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CAJUN C4's Avatar
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Default Std. Deck Height ?

Anyone Know the Standard Deck Height on a L98?
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Old Mar 17, 2003 | 05:24 PM
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Default Re: Std. Deck Height ? (CAJUN C4)

BBC 9.800 inches, SBC 9.025 inches :chevy
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Old Mar 17, 2003 | 05:28 PM
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Default Re: Std. Deck Height ? (clem zahrobsky)

I'm sorry...I meant the Quench height. I'm trying to get to .035"-.037" piston to head clearance.
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Old Mar 17, 2003 | 05:56 PM
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Default Re: Std. Deck Height ? (CAJUN C4)

When I stripped the engine on my 87 it was 0.080". The piston to deck height was 0.029" plus the original 0.051" thick head gaskets. I'm going to aim for 0.038"-0.045" using 0.028" thick head gaskets. I have a feeling that although 0.035" is a "recommended" minimum for a steel rod engine, it may be a bit marginal for one that will hopefully cover a lot of street miles and accumulate some carbon. JMHO. :steering:
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Old Mar 17, 2003 | 06:12 PM
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Default Re: Std. Deck Height ? (Davemc1963-87conv)

you should check the deck at both the intake and exhaust side of the piston face because the piston to wall clearance will allow the piston to rock at TDC and this is when the piston is closest to the head. :chevy
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