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Eddie H. · 08-25-2017, 10:46 AM

I have a 406 small block, TH400 and 3.07 gears in my 69 GMC.

I really don't know what kind of mileage it gets. I just know that I have to be sure and shut the engine off while I'm filling the tank, or else I can never get it full.

08-25-2017, 10:46 AM	#28
Eddie H. Registered User Join Date: Mar 2001 Location: Paradise TX USA Posts: 1,200	Re: Fuel mileage I have a 406 small block, TH400 and 3.07 gears in my 69 GMC. I really don't know what kind of mileage it gets. I just know that I have to be sure and shut the engine off while I'm filling the tank, or else I can never get it full. __________________ "Negative people always seem to have a problem for every solution"