Standard Uncoated Headers; 1-3/4 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design
Specifications:
| Description_ASM |
1956 Chevrolet Bel Air Base CID 396 Naturally Aspirated GAS, 1956 Chevrolet Bel Air Base CID 402 Naturally Aspirated GAS, 1956 Chevrolet Bel Air Base CID 454 Naturally Aspirated GAS, 1957 Chevrolet One-Fifty Series Base CID 396 Naturally Aspirated GAS, 1957 Chevrolet One-Fifty Series Base CID 402 Naturally Aspirated GAS, 1957 Chevrolet One-Fifty Series Base CID 454 Naturally Aspirated GAS, 1955-1957 Chevrolet Two-Ten Series Base CID 396 Naturally Aspirated GAS, 1955-1957 Chevrolet Two-Ten Series Base CID 402 Naturally Aspirated GAS, 1955-1957 Chevrolet Two-Ten Series Base CID 454 Naturally Aspirated GAS |
| Description_DEF |
Exhaust Header |
| Description_DES |
Standard Uncoated Headers; 1-3/4 in. Tube Dia; FULL LENGTH Design |
| Description_EXT |
Standard Uncoated Headers; 1-3/4 in. Tube Dia.; 3 in. Coll.; 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_INV |
HEDMAN GM CAR HEADERS-UNCOATED |
| Description_SHO |
HEADERS, UNCOATED |
| Air Conditioning |
Yes |
| Automatic Transmission - Column |
No |
| Automatic Transmission - Floor |
Yes |
| Bolts/Studs Included |
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 |
Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions |
| Crossover Pipe Included |
No |
| Cylinder Head |
Stock Profile Heads |
| Cylinder Head Port Shape |
Round |
| E.O. # |
No |
| Emissions Notes |
Not Legal For Street Use on '75-Later Model Years! Legal for off-road use 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 Port Shape |
Round |
| Header Style |
Long Tube |
| IMPORTANT! |
Front Engine Mounts ONLY! |
| Installation Hardware Included |
Yes |
| Manual Transmission - Column |
No |
| Manual Transmission - Floor |
Yes |
| Material |
Mild Steel |
| Motor Mounts Included |
No |
| Mounting Hardware Included |
Yes |
| Notes |
55-57 Chev. Pass. Car 396-502 |
| Package Contents |
Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape |
Round |
| Power Steering |
Yes |
| Primary Tube Diameter (in) |
1.75 in. |
| Primary Tube Gauge |
16g |
| Quantity |
Sold as a pair. |
| Reducer Outlet Size |
2-1/2 in. |
| Reducers Included |
Yes |
| Replacement Gasket |
27530 |
| Replacement Head Flange Gasket |
27530 |
| Title |
HEDMAN HEDDERS STANDARD UNCOATED HEADERS; 1-3/4 IN. TUBE DIA.; 3 IN. COLL.; FULL LENGTH DESIGN |
| Tube Design |
Standard |
| Tube Diameter |
1-3/4 in. |
| Tube Length |
Long Tubes |
| Tube Material Thickness |
16g |
| Tube Size |
1-3/4 in. |
| Tube Style |
Long Tubes |
| Tuned |
No |
| Variations |
68256 |
| Weld-Up |
No |
| with A.I.R. System |
No |
| with EGR |
No |
| Y-Pipe Included |
No |
| Length |
10.0000 |
| Width |
18.0000 |
| Height |
46.0000 |
| Weight |
31.0000 |
