procomp motorsports 3051 BBFord aluminum cylinder heads
356-A Aluminum Alloy Heat treated to T-6 Specifications.
74cc Combustion Chamber, 290cc Intake Runners, 130cc Exhaust Runner
Oval Intake Ports 1.925" +/-& 2.230 +/-
Mfg for Intake Valves- 2.190/ Stock, Exhaust Valves- 1.710/ Stock