Hedman Uncoated Long Tube Headers Big Block 396-502 Engine GM Trucks 67-87 w/ 1-3/4” Primaries/ A.I.R.

Upgrade your 1967-1987 GM truck with these Hedman uncoated long tube headers and unlock more ample exhaust flow. These headers have a smooth-flowing long tube design that helps to enhance horsepower and torque by allowing the engine to breathe easily. These headers are designed specifically for 396-502 big block engines with A.I.R. Systems and are covered by CARB E.O., making them 50-State Legal. The temporary black finish from the factory will burn off with regular use, leaving an Uncoated finish.

Fitment & Features:
- For 2WD and 4WD applications
- Chevy Big Block 396-502 with A.I.R.
- Fits factory profile heads
- Round cylinder head port shape
- Long tube 1-3/4” headers (pair)
- Gasket, 2-1/2” reducers, and hardware
- 3” collector
- Mild steel construction
- Made in the USA

Each Hedman header is hand-welded from mild steel to ensure a consistently high quality product. A unique gasketless ball-and-socket collector design allows your big block exhaust system to bolt up even if the alignment isn’t exact, for a hassle-free installation. All necessary hardware and gaskets are included for installation.

Vehicle Fitment:
- 1967-1987 Chevy C10/ C20/ C30/ K10/ K20
- 1973-1987 Chevy K30
- 1967-1972 GMC C1500/ C2500/ C3500/ K1500/ K2500
- 1973-1980 GMC C15/ C25/ C35/ K15/ K25/ K35
- 1981-1987 GMC C1500/ C2500/ C3500/ K1500/ K2500/ K3500

Please Note:
- Not for vehicles with offset engine position
- California EO Approved
- Carb EO Number: D167-33