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bone stock 383s were no powerhouses. compression low enough you could probably run them on water is the biggest thing that hurt them.

get a good tune on it and it'll wake up considerably, but it's not going to be a race motor.




buddy took a 2bbl 68 Charger w/ a 383 added Summit 488 cam, Mopar M1 dual plane intake, 800 thunder carb, headers, 175k Convert, and 3.55's ran 14.20's driving like grandma. I could have gotten easy 13's out of the car. not to shabby for a 3900lb car w/ a 70k mile 383 2bbl mill.