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Old 02-28-2010, 05:21 PM
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500 HP Ford I-6

My guess is that he offset ground the crank to lengthen the stroke, not destroke it. Why would you destroke an engine if you are trying to make 500 horsepower from an engine designed to make 170 horsepower?

Originally Posted by oldies6
Well, this may be old info, since the warning tells me that the last post for this discussion occurred >100 days ago. But, I just came across this website and happened to ask about B. Sizemor's 6. Well I have a 1977 copy of Pop. Hot Rodding's Engine Annual and it lays out an article on Bruce Sizemore's I-gas Pinto which reads "How to Build a 500 hp 6-cylinder Ford. And like the others mention, it was C.J. Batten of Romulus, Mich who did the furnance-blazed heads. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. As I recall from articles way back, this is an expensive process. THe new heads will have the same bolt-pattern as the original 6. The completed head is also wider so push-rod holes need to be cut-out on the block side, then sealed with "o" rings, etc. The push-rods needed to be extended using a 2-piece design w/a small aluminum sleeve (that slides in the block) to join the 2 pushrods. There is a lot he did to this engine, if you're interested but he kept the orig. crank, offset-grinding it to a smaller crankpin diam. which de-stroked it. Cloyes gears to replace the factory chain set-up and hand-built his own Accel BEI distributor by machining the housing ut of aluminum billet.
Im not an avid racer, but did my share of hot-rodding back in the 70's. I like to read/listen about old time Fords, so decided to join this website. 351 Clevelands and 6 cylinder Fords were my favorites. The stories about 6's like this article and Ak Miller's experiments w/the old Maverick six interested me a lot back then. Hence, I have kept some mags/articles on hopping-up old 6's. Well, hope this has been a little helpful to you...although this post has been up for awhile. good luck!

hopping up Ford six's.
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