Holley Releases Plug-and-Play EFI Harnesses for Gen III Hemis
These Holley EFI harnesses provide a plug and play solution for the main, injector, ignition coil, and drive-by-wire harnesses needed to fire your Gen III Hemi up with Holley EFI control! The main, ignition coil, and drive-by-wire harnesses are available for either early or late model Hemis. The injector harness is available for either USCAR or Jetronic style fuel injectors. For more information regarding each harness, check out the individual product pages HERE.
Holley Announces updates to HP & Dominator Fuel Pump Lines| 03/16/2015
Holley has added new products to the HP and Dominator fuel pump lines. Hit the jump to see what's new!
NOS Releases Giant Assortment of New Nitrous Products| 11/14/2018
Choose from black nitrous bottle blankets and new nitrous systems for GM LS engines, late model Ford and Chrysler applications, and dual-carb (2x4) engines.
How To Choose A Drag Race Ignition| 12/03/2018
Drag racers rely on exotic fuels and high cylinder pressures to make huge power. High compression ratios, nitrous oxide and high boost pressures paired with alcohol, methanol or nitro make lighting the air/fuel mixture in the cylinder difficult. The immense pressures inside the combustion chamber will literally blow the spark out. This is where an MSD ignition really shines. Its ability to fire the most powerful and fastest racecars on the planet is legendary. MSD ignition systems can be basic, or advanced enough to control one-tenth of a degree of timing for one-hundredth of a second in any cylinder using individual cylinder timing.
Holley Days Are Back! And So is the Savings – Up to 20% On Virtually Everything!| 11/29/2018
Buy now and save on just about anything from the entire Holley Family of Brands From Now to Dec. 31, 2018!