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We used to race a dirt sportsman car with a 320 cubic inch limit. Our engines were 283 blocks with the 327 crank, Yes the same dimensions as a 307. We also ran .060 over and I think that was a 316-317 c.i. It was a pretty potent combination. The stock 307 had a pretty bad rap for being a serious dog. When I was a kid my dad had a new pickup with a 307 4 speed. It would go 100 in third gear and only 85 in fourth.lol.
hello i have a 283 in my 55 chevy i dont no much about this engine thing trying to learn more about it but the engine was bore 30 over w a small journalcrank was tuned .20 it has 400 heads on it with 7600 chamber can u tell me is this any good i wont to redo it i bought the car with the engine in its a brand new engine but she to quite i was told i could slide a 327 cam in it and some lfters to match please help thanks