STREET and STRIP Race Headers; 70-81 FIREBIRD 400-455; 1-3/4 in. -1-7/8 in. Stepped Tubes; 3-1/2 in. Collector
Specifications:
| Description_ASM |
1970-1977 Pontiac Firebird Base CID 400 Naturally Aspirated GAS, 1977 Pontiac Firebird Base CID 403 Naturally Aspirated GAS, 1971-1974 Pontiac Firebird Base CID 455 Naturally Aspirated GAS, 1978-1979 Pontiac Firebird Formula CID 400 Naturally Aspirated GAS, 1978-1979 Pontiac Firebird Formula CID 403 Naturally Aspirated GAS |
| Description_DES |
STREET/STRIP Headers; 70-81 FIREBIRD 400-455; 1-3/4 in.x1-7/8 in. Stepped |
| Description_DEF |
Exhaust Header |
| Description_EXT |
STREET and STRIP Race Headers; 70-81 FIREBIRD 400-455; 1-3/4 in. -1-7/8 in. Stepped Tubes; 3-1/2 in. Collector |
| Description_INV |
HUSLER PONTIAC EXHAUST HEADERS |
| Description_SHO |
RACE HEADERS |
| Bolts/Studs Included |
Yes |
| Automatic Transmission - Floor |
Yes |
| Automatic Transmission - Column |
No |
| Air Conditioning |
No |
| California Proposition 65 |
WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
| Crossover Pipe Included |
No |
| Cylinder Head |
Factory |
| Notes |
70-81 Firebird 400-455 |
| Power Steering |
No |
| Material |
Mild Steel |
| Key Feature |
Standard Port |
| Collector Attachment |
3-1/2 in. |
| Finish |
Uncoated |
| Cylinder Head Port Shape |
D-port |
| Manual Transmission - Floor |
No |
| Motor Mounts Included |
No |
| Header Material |
Mild Steel |
| Primary Tube Gauge |
18g |
| Header Finish |
Raw |
| Exhaust Exit |
Under Chassis Exit |
| Contents |
Pair of Headers, Gaskets & Mounting Hardware |
| Flange Thickness |
0.375 in. |
| Catalytic Converter(s) Included |
No |
| Manual Transmission - Column |
No |
| Header Port Shape |
Standard Port |
| Flange Style |
Standard |
| Gasket Or Seal Included |
Yes |
| Header Style |
Long Tube- Stepped |
| Emissions Notes |
RACING HEDDER! Not legal for use on pollution controlled vehicles. |
| Collector Size |
3-1/2 in. |
| Collector Diameter |
3-1/2 in. |
| Product Info |
70-81 PONTIAC FIREBIRD- 13/4 in., 17/8 in., 31/2 in. - HUSLER STEPPED TUBE RACE HEDDERS |
| Package Contents |
Set of Headers, mounting hardware and gaskets |
| Installation Notes |
Flange may need to be cut between ports to install hedders. Do not cut between twin ports. |
| Primary Tube Diameter (in) |
1.75 in. x 1.875 in. |
| Header Construction |
MILD STEEL- Standard-Duty |
| Engine |
Pontiac 400-455 |
| E.O. # |
No |
| Finish Type |
Uncoated Mild steel |
| Y-Pipe Included |
No |
| with A.I.R. System |
No |
| Quantity |
Sold as a set. |
| with EGR |
No |
| Reducers Included |
Yes |
| Replacement Head Flange Gasket |
18073 |
| Title |
HEDMAN HUSLER HEDDERS STREET AND STRIP HEADERS; 70-81 FIREBIRD 400-455; 1-3/4 IN. -1-7/8 IN. STEPPED TUBES; 3-1/2 IN. COLLECTOR |
| Replacement Gasket |
18073 |
| Tube Size |
1-3/4 in. x 1-7/8 in. |
| Tuned |
Yes |
| Tube Material Thickness |
18g |
| Reducer Outlet Size |
2-1/2 in. |
| Weld-Up |
No |
| Tube Diameter |
1-3/4 in. x 1-7/8 in. |
| Tube Style |
Long Tubes |
| Tube Length |
Long Tubes |
| Vehicle Family |
Pontiac Firebird; 1970-81 |
| Tube Design |
Standard |
| Length |
11.0000 |
| Width |
22.0000 |
| Height |
47.0000 |
| Weight |
40.0000 |
