| Description_ASM |
1978-1980 Buick Regal Base CID 305 Naturally Aspirated GAS, 1978-1979 Buick Skylark Base CID 305 Naturally Aspirated GAS, 1978-1979 Buick Skylark Base CID 350 Naturally Aspirated GAS, 1978-1987 Chevrolet El Camino Base CID 305 Naturally Aspirated GAS, 1978-1979 Chevrolet El Camino Base CID 350 Naturally Aspirated GAS, 1978-1981 Chevrolet Malibu Base CID 305 Naturally Aspirated GAS, 1978-1981 Chevrolet Malibu Base CID 350 Naturally Aspirated GAS, 1982-1983 Chevrolet Malibu Classic CID 305 Naturally Aspirated GAS, 1979 Chevrolet Monte Carlo Base CID 305 Naturally Aspirated GAS, 1981-1987 Chevrolet Monte Carlo Base CID 305 Naturally Aspirated GAS, 1978 Chevrolet Monte Carlo Landau CID 305 Naturally Aspirated GAS, 1980 Chevrolet Monte Carlo Landau CID 305 Naturally Aspirated GAS, 1978-1980 Oldsmobile Cutlass CID 305 Naturally Aspirated GAS, 1985-1987 Oldsmobile Cutlass CID 305 Naturally Aspirated GAS, 1981 Oldsmobile Cutlass CID 350, 1980 Oldsmobile Cutlass Base CID 305 Naturally Aspirated GAS, 1978-1979 Oldsmobile Cutlass Vista Cruiser CID 305 Naturally Aspirated GAS, 1978-1980 Pontiac Grand Prix CID 305 Naturally Aspirated GAS, 1983-1987 Pontiac Grand Prix CID 305 Naturally Aspirated GAS, 1978-1979 Pontiac Grand Prix Base CID 305 Naturally Aspirated GAS |
| Description_DEF |
Exhaust Header |
| Description_DES |
Standard Uncoated Headers; 1-1/2 in. Tube Dia; FULL LENGTH Design |
| Description_FAB |
Handcrafted, Mild Steel Construction. |
| Description_FAB |
Long Tube Header Design Provides Excellent Top-End Horsepower and Torque. |
| Description_FAB |
Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors |
| Description_FAB |
Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters) |
| Description_FAB |
Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating! |
| Description_FAB |
Proud To Say, Made In The USA, Since 1954! |
| Description_EXT |
Standard Uncoated Headers; 1-1/2 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design |
| Description_INV |
HEDMAN GM CAR HEADERS-UNCOATED |
| Description_SHO |
HEADERS, UNCOATED |
| Air Conditioning |
Yes |
| Automatic Transmission - Column |
Yes |
| Automatic Transmission - Floor |
Yes |
| California Proposition 65 |
WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
| Catalytic Converter(s) Included |
No |
| Collector Attachment |
3 in. |
| Collector Bolts Included |
Yes |
| Collector Diameter |
3 in. |
| Collector Size |
3 in. |
| Collector Style |
BALL and SOCKET Style (Gasketless) |
| Contents |
Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Crossover Pipe Included |
No |
| Cylinder Head |
Stock Profile Heads |
| Cylinder Head Port Shape |
Round |
| E.O. # |
Yes |
| Emissions Notes |
EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website) |
| Engine |
Chevy SB 283-400 (Gen 1) 1958-86 |
| Engine Notes |
CHEVROLET ENGINES Only! |
| Exhaust System Dia |
2-1/2 in. |
| Finish |
Uncoated |
| Finish Type |
Uncoated Mild steel |
| Flange Style |
Standard |
| Flange Thickness |
0.3125 in. |
| Gasket Or Seal Included |
Yes |
| Header Construction |
MILD STEEL- Standard-Duty |
| Header Fasteners Included |
Yes |
| Header Finish |
Uncoated |
| Header Material |
Mild Steel |
| Header Style |
Long Tube |
| Installation Hardware Included |
Yes |
| Installation Notes |
Must modify rotary A/C bracket. |
| Key Feature |
50 State (with A.I.R.) |
| Manual Transmission - Column |
No |
| Manual Transmission - Floor |
Yes |
| Material |
Mild Steel |
| Mounting Hardware Included |
Yes |
| Notes |
1978-87 G-Body; 78-83 Skylark; 78-87 Chevrolet passenger cars 283-400 w/ A.I.R. |
| Package Contents |
Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape |
Round |
| Power Steering |
Yes |
| Primary Tube Diameter (in) |
1.50 in. |
| Primary Tube Gauge |
16g |
| Quantity |
Sold as a pair. |
| Reducer Outlet Size |
2-1/2 in. |
| Reducers Included |
Yes |
| Replacement Gasket |
27500 |
| Title |
HEDMAN HEDDERS STANDARD UNCOATED HEADERS; 1-1/2 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
| Tube Design |
Standard |
| Tube Diameter |
1-1/2 in. |
| Tube Length |
Long Tubes |
| Tube Material Thickness |
16g |
| Tube Size |
1-1/2 in. |
| Tube Style |
Long Tubes |
| Tuned |
No |
| Variations |
68311, 66311, 63311, 61318 & 61313. |
| Weld-Up |
No |
| with A.I.R. System |
Yes |
| with EGR |
No |
| Y-Pipe Included |
No |
| Length |
8.0000 |
| Width |
17.0000 |
| Height |
29.0000 |
| Weight |
26.0000 |
