Description
Hooker weld–up kits work great for racers who need to build custom headers when a specific fit tuned Super Competition header is not available. Kits come with mandrel bent one piece primaries, two 5/16 inch flanges and precision formed collectors incorporating unique long transition to provide better flow. Polished stainless steel NHRA contingency header I.D. tags, gaskets and mounting bolts are also included. Our newest zoomie weld–up kits for funny cars and dragsters are NHRA and IHRA legal and feature 2 1/2 inch primaries with double tube design. Popular fuel and alcohol engine header flanges are available separately.
Resources
Installation Instructions
Specifications:
| Application | Automotive |
| Coated Finish | Natural |
| Collector Diameter | 4.000 in. |
| Collector Tube Size | 4.000 in. |
| Description_ASC | Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations |
| Description_DES | Super Competition Long Tube Header |
| Description_EXT | Super Competition Long Tube Header; Weld-Up Kit; Tube Size 2.125 x 40 in.; Collector Size 4 x 10 in.; Fits Big Block Chevy 396-502; Incl. Gaskets/Hardware; |
| Description_FAB | Gaskets And Mounting Bolts |
| Description_FAB | Long Transition/Better Flow |
| Description_FAB | Mandrel Bent 1 pc. Primaries |
| Description_FAB | Precision Formed Collectors |
| Description_FAB | SS NHRA Contingency ID Header Tags |
| Description_FAB | Two 0.3125 in. Flanges |
| Description_INV | LTS HDR;CHEV RACE WELDUP |
| Description_LAB | Proposition 65 |
| Description_MKT | Hooker weld–up kits work great for racers who need to build custom headers when a specific fit tuned Super Competition header is not available. Kits come with mandrel bent one piece primaries, two 5/16 inch flanges and precision formed collectors incorporating unique long transition to provide better flow. Polished stainless steel NHRA contingency header I.D. tags, gaskets and mounting bolts are also included. Our newest zoomie weld–up kits for funny cars and dragsters are NHRA and IHRA legal and feature 2 1/2 inch primaries with double tube design. Popular fuel and alcohol engine header flanges are available separately. |
| Description_SHO | Exhaust Header |
| Engine Make/Size | Chevy Big Block (396-502) |
| finish | Natural |
| Head Style | Long-Tube |
| height | 21.0 |
| length | 44.0 |
| LTL | N |
| Material | Mild Steel |
| Port Shape | Same As Port/Can Be Matched |
| Primary Tube Diameter | 1.125 in. |
| Tube Diameter | 2.125 in. |
| Tube Direction | Down Swept |
| Tube Material | Mild Steel |
| WARNING CA Proposition 65 | Yes |
| WARNING CA Proposition 65 Message | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
| weight | 44.0 |
| width | 15.0 |
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