Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.
| Download Name | File Size |
| D354.pdf | 335.33KB |
| D354-B.pdf | 335.33KB |
| Make | Model | Years | Fitment Notes |
| Chevrolet | Bel Air | 1955 - 1957 | Will not fit if engine is located more than 3/4” forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, & 16339 or equivalent. Original bellhousing frame mounts must be removed. Will fit with 605 power steering box. Does not fit 4 speed applications with Factory Side bell housing mounts. Header is designed to fit cars using original V-8 pitman arm part number 3719487 not 6 cylinder pitman arm number 3709877. Aftermarket pitman arms must be same configuration as OE for proper header fit. For use with 396-502 Big Block Chevrolet Engine Swap. Full-length |
| Chevrolet | Del Ray | 1957 | Will not fit if engine is located more than 3/4” forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, & 16339 or equivalent. Original bellhousing frame mounts must be removed. Will fit with 605 power steering box. Does not fit 4 speed applications with Factory Side bell housing mounts. Header is designed to fit cars using original V-8 pitman arm part number 3719487 not 6 cylinder pitman arm number 3709877. Aftermarket pitman arms must be same configuration as OE for proper header fit. For use with 396-502 Big Block Chevrolet Engine Swap. Full-length |
| Chevrolet | One-Fifty Series | 1955 - 1957 | Will not fit if engine is located more than 3/4” forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, & 16339 or equivalent. Original bellhousing frame mounts must be removed. Will fit with 605 power steering box. Does not fit 4 speed applications with Factory Side bell housing mounts. Header is designed to fit cars using original V-8 pitman arm part number 3719487 not 6 cylinder pitman arm number 3709877. Aftermarket pitman arms must be same configuration as OE for proper header fit. For use with 396-502 Big Block Chevrolet Engine Swap. Full-length |
| Chevrolet | Sedan Delivery | 1955 - 1957 | Will not fit if engine is located more than 3/4” forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, & 16339 or equivalent. Original bellhousing frame mounts must be removed. Will fit with 605 power steering box. Does not fit 4 speed applications with Factory Side bell housing mounts. Header is designed to fit cars using original V-8 pitman arm part number 3719487 not 6 cylinder pitman arm number 3709877. Aftermarket pitman arms must be same configuration as OE for proper header fit. For use with 396-502 Big Block Chevrolet Engine Swap. Full-length |
| Chevrolet | Two-Ten Series | 1955 - 1957 | Will not fit if engine is located more than 3/4” forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, & 16339 or equivalent. Original bellhousing frame mounts must be removed. Will fit with 605 power steering box. Does not fit 4 speed applications with Factory Side bell housing mounts. Header is designed to fit cars using original V-8 pitman arm part number 3719487 not 6 cylinder pitman arm number 3709877. Aftermarket pitman arms must be same configuration as OE for proper header fit. For use with 396-502 Big Block Chevrolet Engine Swap. Full-length |
| Collector Attachment | 3-Bolt Flange |
| Collector Diameter | 3.5 IN |
| Collector Port Diameter | 3.5 IN |
| Cylinder Head Port Shape | SAP |
| Design | Full-length |
| Flange Thickness | 0.375 IN |
| Gasket Or Seal Included | Yes |
| Gaskets Included | Yes |
| Grade Type | Performance |
| Header Style | Full-length |
| Mounting Hardware Included | Yes |
| Oxygen Sensor Port | No |
| Part Type | Exhaust Header |
| Port Shape | Round |
| Primary Tube Outside Diameter | 2.0 IN |
| Proposition 65 | www.P65Warnings.ca.gov |
| Tube Wall Thickness | 16 GU |
| Warranty Time | 24 Months |
