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**Tom Vogel** · 02-11-2011, 10:07 AM

Our 69 3/4 ton GMC with the 300hp 350 was 10to1... that is/was stock. Gas was cheaper and better.

02-11-2011, 10:07 AM	#3
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,565	Re: 1970 350 Compression ratio Our 69 3/4 ton GMC with the 300hp 350 was 10to1... that is/was stock. Gas was cheaper and better.