Holley Main Jets (2) - 70 2070112 Studs are manufactured with a

Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading

supports up to 1500 HP carbureted

The Pro-Flo XT LS3 EFI accepts GM OEM 90mm or Edelbrock #3869/#38693 throttle bodies

Sportsman 2V #2912 for Vortec heads has all the features of #2901 for the racer using the popular GM (Vortec L31) cast iron cylinder heads

In tank design

Holley Main Jets (2) - 70 2070112 Studs are manufactured with aSet of two carburetor main jets. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and