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Old 02-16-2008, 08:44 PM
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Quench, 400 SBC, Head Gasket

I know this has been answered before at some point, but can't seem to find what i am looking for.

Here's the deal, I need to know which is an acceptable quench for a 400 SBC.
Here's what i have;
4.165 bore
3.750 stroke
65cc head
0 deck
26.58 dish piston

Trying to get my compression higher, without changing my pitons, what would be the thinest gasket you think i should use.

Thanks in advance guys.....


Last edited by 1_big_jp; 02-16-2008 at 08:53 PM. Reason: thread title
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Old 02-16-2008, 09:41 PM
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0.040" Is the ideal quench,You may be able to shave the heads and raise the compression to where your wanting it.
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Old 02-17-2008, 02:53 AM
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.040 to .060 quench is acceptable but dont go under or over these clearences. with the piston at TDC measure where the piston is in the bore then select a gasket that puts the quench within these limits.
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Old 02-17-2008, 06:23 AM
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The school of thought I learned from says 0.035" to 0.045", with the tighter spec being used for cast and hypereutectics with a tight piston to bore clearance and the looser spec for forged pistons with a little looser piston to bore clearance to allow for piston rock in the bore.

A Fel-Pro FPP-1014 would work well in my opinion. 4.200" X 0.039" with steam holes. (8.85 cc's).

This would yield a static compression ratio of 9.33:1 and in my opinion would work well with a cam along these lines.....
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