Holley Standard Main Jets . Size 63 # HO122-63 Rate_Engine 540 CI ProSeries Stroker Crate

540 CI ProSeries Stroker Crate Engine | Big Block GM Style | BBC | Dressed Longblock with Carburetor

1973+ Chev Trucks Cars

Big Block Chev & Ford 3/8 ARP Chromoly Header Bolt Kit # 100-1102

They allow you to upgrade a carbureted system to EFI without replacing the fuel pressure regulator

Holley Standard Main Jets . Size 63 # HO122-63 Rate_Engine 540 CI ProSeries Stroker CrateHolley Standard Main Jets . Size 63 # HO122 63 BRAND NEW GENUINE HOLLEY STANDARD MAIN JETS. SALE IS FOR A PACKET OF 2 JETS. Fine tune your carburetor for street or race conditions. These Holley standard main jets are just what you need to fine tune your carburetor for street or race. Threaded for easy installation and removal, Holley jets are manufactured to high tolerances for consistency.