boost on 4.3

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Mar 10, 2009 | 02:45 PM

chevyracen

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Joined: Mar 2009

Posts: 23

boost on 4.3

how much boost will a stock 4.3 hold and still run on pump gas

Mar 10, 2009 | 06:59 PM

swartlkk

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Joined: May 2005

Posts: 41,331

From: Waterloo, NY

Having 9.4:1 compression should mean that you can take about 5-8psi safely on pump gas. Get up over 10psi and you have to have very good programming to keep it from detonating on 93 octane and even then it is not a sure thing.

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