hey guys I am thinking of putting some long tubes on my extended cab Z-71 I am wondering who makes good quality headers for this truck... it doesn't have cats and I can make a y-pipe to adapt to the flowmaster cat-back. Thanks Art

 

I've heard good things about Doug Thorley headers on these trucks. I dont know if they fit on 4X4s though... Ill look into it and keep you posted.

Here you go:


Doug Thorley midlenght headers for 96-99 5.7 4X4 GM pickups: Part # THY-301Y-FED

Doug Thorley Website LINK (Third ones from top)


Summitracing part # DTE-301Y-FED LINK

Some info: Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range, which is great for towing and steep grades. To make these headers last, Thorley made them out of durable 14-gauge mild steel, with 3/8 in. thick flanges and 5/16 in. collector rings. To prevent leaks, these headers have an O-ring welded into the flange, in addition to the high-temperature gasket provided.


There is also THY-301Y-FED-C LINK for ceramic coated.

Hope this helps.

 

Thanks for the good info man I really appreciate it