SBC polished billet alum. water block spacers. These spacers are 2.00" thick and are machined for a -8 AN fittings so the racer can run water behind a block mounted idler bracket. Spacers can be machined down .375" by the racer before interfering with the -8 port hole if not that much space is needed.
Spacers are designed to fit all SBC engine blocks that use conventional water pump holes on the front of the engine block. Fits Dart, World, Donovan, Rodeck, CN and most all other aftermarket or factory SBC engine blocks.
Spacers are sold in a pair and are polished on all surfaces that can be seen when mounted on the motor.