Boost - NA - Trying to bring up compression.

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Aug 21, 2018 | 06:23 AM

95mysticta

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Boost - NA - Trying to bring up compression.

I have a 383 lt1 motor currently built 8.1:1 compression I bought in a parts car. Wanting to use the shortblock and bring up the compression back to na. Currently has 65cc afr heads and was going to swap out to a set of ported stock casting around 54cc. How much of a difference would the head swap and a set of thin .026 gaskets net me for compression bump?

thanks.

Aug 21, 2018 | 07:57 AM

biketopia

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Need to see what the pistons are. Are they flat tops, dished, set down in the hole some. Then you can determine what changing the chamber will do.

Aug 21, 2018 | 08:49 AM

Shownomercy

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Assuming all things stay the same with pistons, and a .026 HG, going from 65cc to 54cc gets you almost a full point of compression. Without knowing what HG you have now, you can't get a true answer though.

Just throw a 88mm turbo on it and let her eat