Piston ring installation

Pontiac piston ring installationThe following steps are based on Manley and SpeedPro pistons and rings as used by the writer, and based on the respective installation instructions of the piston and ring manufacturer. While the installation procedure and positions are...

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...

Degreeing a Camshaft

HOW TO DEGREE IN A CAMSHAFT ON A PONTIAC 326-455 For my 400 engine rebuildI chose the Competition Cams 270H camshaft. It has a lift of .470″ on the intake and exhaust. With Magnum Roller Rockers it is .006″ higher. The cam is designed to be positioned...

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...