Pontiac 12.6 Degree Valve Angle Bare Pro Port Cylinder Heads *w/Pushrod Holes* (Pair)
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Victor Pro-Port Raw: These new heads are the ultimate choice for extreme Pontiac race applications. They feature raised intake port openings and extended intake flanges for improved flow, while retaining the stock location, making them compatible with Victor series manifolds and Ram Air IV style headers. The intake valves have also been moved away from the cylinder wall allowing for improved burn characteristics when used with larger than stock diameter valves. These heads also features a center water outlet for improved cooling and interlinked rocker stud pad with extra thread engagement for improved valve train stability. Finally, they feature raised valve cover rails and spring pads to compliment the improved port design, but still retain the stock bolt pattern. Victor Pro-Port Raw head #77819 have a 12.6 degree valve angle features 5/8" raised intake ports and the intake flange has also been extended 5/8", will fit stock manifolds. Victor Pro-Port Raw head #77839/77849 have an 11 degree valve angle and features a 1.25" raised intake ports and flange.
Semi-Finished; With Pushrod Holes
Unmachined Combustion Chamber
0.83'' x 1.61'' Intake Port Entry
1.00'' x 1.273'' Exhaust Port Exit
2.35'' Int/1.72'' Exh Max. Valve Sizes