Pontiac Cylinder Heads Code Intake Exhaust Volume (cc) 535461 1.92 1.6 68cc 540306 1.92 1.66 68cc 544127 2.02 1.76 68cc 9771980 2.02 1.76 65cc 9770716 1.92 1.66 68cc 75 1.92 1.66 68cc 76 1.92 1.66 70cc 77 1.92 1.66 68cc 92 1.92 1.66 70cc 93 1.92 1.66 68cc 670 2.11 1.77 72cc 97 2.11 1.77 72cc 62 2.11 1.77 72cc 16 2.11 1.77 72cc 31 2.11 1.77 72cc 96 2.11 1.77 71cc 16 2.11 1.77 72cc 62 2.11 1.77 72cc 48 2.11 1.77 72cc 722 2.11 1.77 71cc 12 2.11 1.77 72cc 13 2.11 1.77 72cc 614 2.11 1.77 71cc 64 2.11 1.77 87cc 96 2.11 1.77 96cc 66 2.11 1.77 114cc 197 2.11 1.77 111cc 7K3 2.11 1.77 96cc 7M5 2.11 1.77 114cc 7F6 2.11 1.77 111cc 4X 2.11 1.66 98-114cc 46 1.96 1.66 86cc 16 2.11 1.77 111cc 5C 2.11 1.77 101cc 6X 2.11 1.66 89-101cc AFTERMARKET Edelbrock 2.11 1.66 72 or 87cc Wenzler Superchief up to 2.3 up to 1.8 Wenzler Series II up tp 2.19 up to 1.82 60-90cc