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318 w/360 heads are pigs. can't make em run! sorry : get a la360 short block and use your cam and top end keep your cost at a minimum.you'll be happy, I did the same thing way back when and it just don't work for fast. 360-you will be happy. jeff57



I had quite the opposite experience.

Granted, a 360 bottom end will always outperform one with a 318 bottom end, but mine did well for what it was.

Wore out, ringed and bearinged 318 with 360 J heads, M1 intake and Holley 750 3310. With horribly low compression, 3.23 gears and street tires it would do 14's at 95 mph and still get 17 mpg in my '71 Barracuda.

Lowest budget and one of the funnest motors I ever built. Friends still comment on it to this day! (This past weekend in fact!)