Dart Main Bolt - 4-Bolt Mains - Steel - Black Oxide - Big Block Chevy Nut GM A-Body / G-Body 1978-88

GM A-Body / G-Body 1978-88

Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers

2016-2017 Ford Focus

1968-1974 Chevrolet P30 Van

LT/LS under 850-16

Dart Main Bolt - 4-Bolt Mains - Steel - Black Oxide - Big Block Chevy Nut GM A-Body / G-Body 1978-88Product Description: Main Stud Kit Hex Head 4 Bolt Mains Steel Black Oxide Big Block Chevy Since 1981, Dart Machinery has become the acknowledged leader in producing race winning components. Dart Machinery aluminum and cast iron engine blocks are designed to meet the specialized needs of racers and performance enthusiasts. Dart components are developed in house, manufactured on Dartas own CNC machining centers, and tested on Dartas computer controlled