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5.3 max compresion

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5.3 max compresion

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Aug 28, 2020 | 02:05 PM

#1

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5.3 max compresion

My first LS build. aluminum 5.3 LC9. What do you consider maximum compression on 93 octane pump gas?
So far I have Texas speed CNC 799 heads at 62cc. Although I haven't CC'd them myself yet.
thanks for your help,
Lewy

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Aug 28, 2020 | 02:44 PM

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Quote:

Originally Posted by Lewy-d

My first LS build. aluminum 5.3 LC9. What do you consider maximum compression on 93 octane pump gas?
So far I have Texas speed CNC 799 heads at 62cc. Although I haven't CC'd them myself yet.
thanks for your help,
Lewy

If the camshaft events are correct, you can go 12.46:1. I’m at 12.42:1 on 93 exclusively.
Chamber efficiency and coatings can affect this number also.

Last edited by Che70velle; Aug 28, 2020 at 02:52 PM.

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Aug 28, 2020 | 03:12 PM

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From: Houston, Tx

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Vehicle weight affects this number as well. Car vs truck etc...

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