4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They're available in round and

They're available in round and oval styles

If you want to run a roots style blower but you do not want a broken crank than you must employ this Speedmaster Billet Crank Support

They accurately measure camshaft centerline

These kits reduce the power-robbing windage created from the excess oil draining past the rotating assembly and keeps the oil flowing where it is needed most

Our single plane big block manifold is now available with Dominator carburetor flange

4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They're available in round andThese 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.