Earl's Performance - Earl's -3 AN Tee - Female Swivel On Branch 500 in Backspace - 6

500 in Backspace - 6 x 5

but there is also an adjustable boost/timing retard circuit to prevent detonation

Coil Spring - Conventional - 5 in OD - 11 in Length - 250 lb/in Spring Rate - Rear - Steel - Silver Powder Coat - Each

Oil Pump Pickup - Drag / Road Race - Press / Bolt-On - 3/4 in Inlet Tube - 7-1/2 in Deep Pan - Small Block Chevy - Each

Throttle Body Spacer - PowerAid - 1 in Thick - Gasket / Hardware - Aluminum - Black Anodized - GM GenV LT-Series - Each

Earl's Performance - Earl's -3 AN Tee - Female Swivel On Branch 500 in Backspace - 6Blue Anodized Lightweight Aluminum Construction. Available for Any Plumbing Situation And Many Custom Applications.