FlowTechHeaders are precision engineered and leak tested to get maximum performance and fuel economy from your engine. Each header is formed from specially selected .049 cold roll flash controlled tubing, and features FLOWTECH's exclusive, thick, mandrel–formed Power Plenum collector. All ports are precisely fitted and finished with sturdy, leak–proof O–ringed port seals, and all FlowTechHeaders include all mounting hardware including bolts, nuts and premium gaskets. This header fits 66–87 Chevy/GMC 1/2 & 3/4 & 1–Ton 2WD & 4WD, 88–91 Chevy/GMC 1–Ton Crew Cab, 2WD & 4WD, 67–87 Blazer/Jimmy 2WD, 66–72 Blazer/Jimmy K5/Suburban 4WD, 73–91 Blazer/Jimmy K5/Suburban 2WD & 4WD.
The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. FlowTech does not recommend the use of header wraps as this will void the warranty. For more information on Flowetch exhaust products, Please call the FlowTech tech service dept. at 270-781-9741.
Mandrel-bent tubing provide consistent tubing diameter for smooth flow and increased exhaust velocity.
Heavy duty 16-gauge tubing for increased strength and durability.
1-1/2” primary tube diameter and 3” collector diameter.
Does not fit with angle plug heads.
Accommodates factory AC with use of AC bracket #10042. Header flange designed around factory port heads.
May require clutch linkage modifications.
Long transition collectors for decreased back pressure increasing exhaust velocity.
5/16” machined header flanges with weld ring seal for perfect seal at the exhaust port.
Designed for an easy trouble free fit.
All necessary hardware is included for a no trouble installation.
• Header is coated with a polished silver metallic ceramic thermal barrier coating.