Every exhaust header has been designed specifically for your application to get the most horsepower and torque out of the engine
The #3 line size offers a stiffer pedal feel while utilizing the more popular -4AN ends
Not intended or recommended for street or circle track use
1957-1957 Ford Custom 300
All belt mounting ends are wrap-around and anchor hardware (bolt-in
Racing Power Headers - 1-5/8" Primary - 2-1/2" Collector - Steel - Ceramic - SB Chevy HSXSC11M61 Every exhaust header has beenProduct Description: Headers 1. 625 in Primary 2. 5 in Collector Steel Ceramic Small Block Chevy Pair Started in 1995 and specializing in both aftermarket and OEM markets, the Racing Power Company offers more than 4,800 different parts, including valve covers, dress up kits, air cleaner assemblies, crankshaft pulleys, breathers, light assemblies, and more.