I always like the 327 just a bit better.
327 / 375 from a corvette and then had it balanced and blueprinted by a Japanese guy named YUK who lived in Omaha and dropped it into a 66 SS Nova. SWEET. Didn't corner worth a dam but boy would it go in straight lines nice.
Use to buy 100 octane gas for $.45 per gallon and it would even do better with that. Hmm Memories.
Looks like I need to load up my ammo and head for the range with it. 383, how much jump were you seating to when you got that pressure spike.