Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - GM F-Body 1967-69 - Pair 20-OTL-NB-S larger hole saws use 5/8"-18

larger hole saws use 5/8"-18 thread

We're Design Sensitive

Requires special valve body

Best in class performance - Weighs just 4 pounds

Bar Diameter - May Require Drilling

Hedman Headers - 1.75 in Primary - 3 in Collector - GM LS-Series - GM F-Body 1967-69 - Pair 20-OTL-NB-S larger hole saws use 5/8"-18Hedman Hedders Ls Swap Headers; Mid Length; 67 69 Camaro Firebird (F Body) & 68 74 Nova Ventura (X Body); 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 GM F Body and Nova models 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