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Re: The GMC V6?
My 305 had very low compression ratio...that's why you could lug it to 1200rpm. It was fun, but my 70 stock 315hp 402 from CST is night and day. 1) better fuel economy 7.5mpg to 12mpg. 2) Power..up hill no downshifting, more road speed as well. V6 went to a good home for a 67 4x4 resto. Still have 435G Trans 4spd....
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