Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - Chevy - GM Fullsize Truck / SUV 1967-87 - Pair EFI Automatic Transmission Controller less oil by-pass and maximum

less oil by-pass and maximum filtration performance that's so important in severe racing conditions

Stainless Clamps

A FAST Ignition Control (E6 or E7 series) must be used

92 in Compressed / 23

The result is a more complete burn of the fuel mixture for more horsepower

Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - Chevy - GM Fullsize Truck / SUV 1967-87 - Pair EFI Automatic Transmission Controller less oil by-pass and maximumHedman Hedders Ls Swap Headers; Mid Length; 67 87 Chevy C10 C20 Trucks & SUVs; Uncoated Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and mid length tube headers for Chevy and GMC Trucks for decades, so designing a good fitting, great performing set of headers for the popular LS engine swap. Each set uses smooth flowing, CNC mandrel bent tubes, that are hand welded to ensure each pair