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Re: 67 GMC 305 V6 swap to a SBC 305
Quote:
Originally Posted by bigwil86
........The build specs on the SBC 305 Im putting together will allow me too produce about 375 hp and still get approximately 22 mpg. and at todays prices that means something. lol. I'll be running a mildly built 305 SBC, 700R4 Trans, 4.10 Gear.
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A 350 would be the better choice and will get the gas mileage if built right. 4.10's will not get you 22 MPG even with the 700R4, 3.42 is the steepest gear that might be possible to achieve 22 MPG. That kind of mileage in a truck would be impressive unless you switch to one of the later model LS series of engines, the older SBC Vortecs will get is to but a bit more of a struggle.
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