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All Inclusive WRAPTORTM8 Track Serpentine System for Chevy Big Block engines with 140 Amp alternator
1973+ Chev Trucks Cars
They allow you to upgrade a carbureted system to EFI without replacing the fuel pressure regulator
4" Diameter for high water flow applications (over-drive)
Holley Standard Main Jets . Size 63 # HO122-63 Rate_Engine All Inclusive WRAPTORTM8 Track SerpentineHolley 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.
