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#71142 01/04/2007 10:22 PM | Joined: Mar 2005 Posts: 627 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 627 | Does anyone have data on what compression ratio is for a stock 848 dropped onto a stock 261, plus data showing what compression would result after milling .030, .060, .090, or .120 off the head?
Another question is what is the max compression a guy can go for and still be able to use 87 octane fuel without detonation concerns?
I want as much punch as I can get from idle to about 2500 RPM but fuel economy is necessary. A 3/4 cam kills low RPM performance and drives the peak power way above the RPMs I will run 99.9% of the time. Extra displacement from the 261 and compression boost from a milled 848 is the ticket for me.
Mike Barnes
1950 GMC 1-ton pickup
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