These SB Chevy (Gen 1) and BB Chevy (Mark IV) polyurethane motor mount pads can be installed with Any Compatible Trans-Dapt mount kit, or as a replacement for any of these engines in their stock vehicle. Poly mounts don't produce more power, but the "tighter" material helps put more of it to good use, by transferring more power through the drivetrain, to the wheels. Unlike all-steel motor mount set-ups, polyurethane pads won't rattle your teeth loose.
