383 for a 67 cuda

titanium said

Blue printing -yes,heads-gotta be stock valve sizes,a little room on the cam,allowed 2.5 inch exhaust, gotta run stock carb,intake, and exhaust manifolds. Total comp. can be 1.5 over stock and over bores are allowed to .60 over. So you can get them to run better-I think. Some cars really respond well to these upgrades allowed well others not so much. Hoping to be mid 13's??

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I hope this hasn't veered too far off the origional post, but... I think traction will be your only problem running mid 13's or likely much better. I put a bone stock, 60,000 mile 1965 383 (2 bbl), in a 1972 Valiant 4 door. I added a cast iron 4 bbl intake, and a 600 cfm. carb, 2" exhaust off the tiny log style manifolds. Car was complete in every way, stock interior, steel wheels, a used 727 (120,000 miles), with a gigantic stock converter, and an 8-3/4 with 2.76 freeway gears. It ran 14's the first trip to the track with no tuning whatsoever, and turned 94 Mph. in the 1/4 using only 1st and 2nd gear. Your car will be MUCH faster.