Chevy BBC 454 Rear Seal Adpater Gen V &VI Block 1PC to 2PC Rear Main Seal It is set up to

It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs

while also enhancing its appearance

let Speedmaster hook you up

Featuring a boltin EFI downdraft injection system and complete serpentine drive kit

They're available for a variety of applications to suit your needs

Chevy BBC 454 Rear Seal Adpater Gen V &VI Block 1PC to 2PC Rear Main Seal It is set up toThese Speedmaster rear main seal adapter kits are designed to install an early 2 piece style crankshaft into a late model, 1 piece engine block. They are manufactured from billet aluminum and require no drilling or welding for installation.