I built a 1965 2-bolt 327 SB +20 years ago and need some advise on a new manifold / carburetor / electronic distributor replacement. I can’t remember the cam specs but at the time it was a Crane hydraulic cam I could go with and have enough vacuum for power brakes. The engine only has 5,000 miles over the past 20 years. It is in a ’68 Cutlass convertible with a stock q-jet, intake, exhaust manifolds, dual exhaust, turbo 400 and stock rear-end. The engine never did live up to my expectations for power and I want to take this opportunity to improve performance. Any ideas for low cost upgrades would be appreciated. Looking for a fun car to drive on the weekends – not to race down a drag strip.

FYI - I have found the engine codes 4GM378270 and F0804HA but cannot find where to find the information on the heads, any help would be appreciated.