Notes: For high performance engines only. 1 piece rear main bearing seal. GM Bow tie short deck block. Non computer numerical control bow tie block with 2 piece seal adapter. Molded rubber. 1 piece with rigid carrier. 0.141" Thickness. Thick front seal. Right hand dipstick.
Notes: Non street legal. CNC bow tie block with 2 piece seal adapter. Donovan block. Rodeck block. Rubber coated fiber with steel core. Thick and thin front seals. Left hand dipstick. Straight side rails. Side rails trimmed for strokers.