COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness Header Bolt 1961-1962 Chevrolet P10 Series

1961-1962 Chevrolet P10 Series

The suits also feature a breathable moisture wicking inner liner for cooling comfort

1982-1985 Oldsmobile Toronado

1980-1992 Cadillac Fleetwood

ASN Series Shocks

COMP Cams Seat Spacer BB Chevy Exhaust .300" Thickness Header Bolt 1961-1962 Chevrolet P10 SeriesLate model Big Block Chevrolet engines are originally equipped with exhaust valve rotators. Until now, the only way to make up for the rotator was to stack . 300" of shims under the spring. This was sloppy but also did not fit as well as these seat spacers. These will locate the spring with an outside step so the spring cannot "walk" around on the head. Avoid stacking . 300" of shims under the valve springs on your Big Block Chevrolet with our seat