Hedman Hedders has been putting together its world famous headers using mild steel tubing and flanges for more than 50 years. Although Hedmans are extremely durable, the mild steel material used by all header manufacturers is no match for the harsh conditions of an engine compartment. Even coated headers will fall victim to environmental conditions over time. Hedman 304 Hedders virtually neutralize the power of nature and the heat of the engine compartment. Built entirely of type 304 stainless steel (flanges, tubes, collectors), Hedman 304s are considered "the best of the best". As this video states, the 304 stainless steel used for 304s withstands heat better, and resists corrosion far better than mild steel materials.
All Hedman 304 stainless hedders are available HTC (ceramic-metallic) Coated for vehicle owners who prefer a polished look in their engine compartment. To find out what applications are available in Hedman's 304 line, click here: http://www.hedman.com/categories/?id=6620.
1963 Jeep Willys Pickup
Performance: Chevy 350, Tunnel Ram 2 4's, Dart Heads,Comp Roller Cam,MSD
Ignition, 3" Boria Mufflers, Be Cool Radiator With Dual Electric Fans,
Hedman Headers,Electric Cutouts,Extended Front Fender 3½" Wider, Tilt
wheel: Flaming River, Air Conditioning: Vintage Air, Electric Tonneau
Cover, Disc Brakes, Power Steering, Custom Dash, Power Windows, Power Door
Locks, Brake Line Lock, Warn Winch. Also see 1963 Jeep Makeover
Pontiac 350/421 Heads 1-3/4" Hedman Headers Flowmaster 2.50" Crossflow:
First fire-up video of my 1975 Firebird Formula with Pontiac 350 using
'092' 421, small chamber/small valve heads. Camshaft is a custom ground UD
with .466"/.467" lift - 220°/226° @ .050" on a 111.5° LSA. Cranking
compression is 185-190 psi. Headers are 1-3/4" primary, 4-tube Heddmans
#28150 with mandrel-bent, full-length 2.50" Exhaust system. Muffler is a Flowmaster #42585
Transverse-mounted crossflow with mandrel-bent 2.50" tailpipes and
factory-style, 2.50" stainless steel hockey-stick tips. Carb is n 800cfm
Q-Jet with .070" main/idle air bleeds, .074" main jets, .045" primary
metering rods, 8 in/Hg power piston spring, .037" idle tube restrictions,
.046" idle channel restrictions, 'G' secondary metering rod hanger with
.029" (CC) metering rods. Transmission is a M-20 Muncie with a 8.5" disc
brake 10-bolt with 3.23:1 gears. Car went on to produce 311 RWHP and 325
lbs/ft RWTQ on pump gas through the mufflers. Ignition is HEI with zero ohm
carbon button, .080" AC R46SZ plugs .080" gap and 20° BTDC at idle, 8° of
manifold vacuum advance (28° total @ idle) 16° centrifigal, 44° total
1987 jeep with sbc
1987 jeep wrangler sprung over dana 44's, on 35 inch bfg mud terrains.
small block 350 bored .020 over, pete jackson gear drive, 2.02 fuelie
heads aluminum roller rockers crane cam (480H), weiand intake, edelbrock
650 electric choke and mickey thompson valve covers. fenderwell headers
into purple hornies jeep turnouts. (the stain underneath isn't from my
Jeep CJ7 Laredo 304 V8 Open Headers
Just installed new Hedman Hedders on the CJ. Taking it to the Exhaust shop tomorrow to have a custom built
dual Exhaust system installed. Thought
I'd crank her up and let you have a listen.
Got the new Exhaust installed today.
Consists of Hedman Hedders (3/8 in flange with 14 guage tubes), cross-over
pipe, and MagnaFlow mufflers. I've found that a new dual Exhaust system's sound will become deeper and
more mellow with time. It takes a while for it to get broken-in.
- AMC 304 V8 Bored 30 over.
- Mild Cam: http://www.summitracing.com/parts/SUM-8600/
- Hedman Hedders 99208
- Edelbrock 500 Thunder Series Carburetor
- Edelbrock Performer Intake
- Performance curved HEI distributor from performancedistributors.com
- Spectre Air Cleaner