4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 these cams provide better throttle

these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers

The Speedmaster shift selector shaft uses an O-ring to prevent leakage from GM TH400 cases

5" diameter ring gear and the GM 8

These covers are designed to directly replace your factory timing chain cover

This kit features a simple V-belt to serpentine pulley conversion while retaining your existing brackets

4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 these cams provide better throttleThese Speedmaster piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole. Speedmaster piston oil ring spacers are manufactured from spring steel and install against the bottom sill of the oil ring groove. Available in different bore diameters to suit your specific engine's needs, the Speedmaster piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range.