Cylinder Head Compression

The information below reflects the research conducted by Pontiac enthusiast/ author Pete McCarthy, much of which is from his book, Pontiac Musclecar Performance 1955-1977, as well as information gathered from many other Pontiac enthusiasts world-wide. Information...

Cylinder head chamber volume

¬† Cylinder Head Chamber Volume, cc’s 50 55 60 65 70 75 80 85 90 95 100 105 110 115 303 9.35 9.18 8.67 8.23 7.83 7.47 7.15 6.86 6.60 6.36 6.14 5.93 5.74 5.57 326 10.00 9.78 9.25 8.77 8.34 7.95 7.61 7.30 7.02 6.76 6.52 6.30 6.10 5.91 354* 11.23 10.55 9.97 9.45...

Rocker Arm Adjustment

Pontiac Rocker Arm AdjustmentAfter two decades of weekly hands-on with various Pontiac V8 engines, one area that is always given insufficient attention is the correct setting of the rocker arms. Whether you have decided to stick with the stock type stamped rocker arms...

Cylinder Head Volumes

 Head #Intake CC’s MaxExhaust CC’s Max4X1561426X1611485C1541404615814116165152621651526614814431165152670165152197 H.O.(Round Port)17215696 RA II (Round Port)165162614 RA IV (Round Port)184162722 RA IV (Round Port)187162Edelbrock (72 &...