Doug's Headers D743-R Full Length Header, 1-7/8 In, 65-75 Cutlass, Raw
455 Oldsmobile V8
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Doug's PASSENGER CAR HEADERS Long Tube Raw Steel Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
- 3/8" Thick machined flanges...no warping
- CNC mandrel bent tubes... accurate fit & better flow
- Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
- Heavy 16 gauge tubing...longer life
- Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing
Application1968-1969 Oldsmobile 442 6.6L/400 V8
1968-1971 Oldsmobile 442 7.5L/455 V8
1975 Oldsmobile Cutlass Salon 7.5L/455 V8
1968-1969 Oldsmobile Cutlass 6.6L/400 V8
1968-1974 Oldsmobile Cutlass 7.5L/455 V8
1975 Oldsmobile Delta 88 6.6L/400 V8
1971-1975 Oldsmobile Delta 88 7.5L/455 V8
1968-1969 Oldsmobile Vista Cruiser 6.6L/400 V8
1970-1975 Oldsmobile Vista Cruiser 7.5L/455 V8
- Doug's Headers D743-R 1 7/8" 4-Tube Full Length Header Olsmobile Cutlass 455 65-75 Raw Steel
- Raw Steel
- Collector: 3 1/2
- Port Shape: SAP
- Primary Tube: 1 7/8
- emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
- with A/C
- with Floor Shifter
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Q & A
Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
Wouldn't it be nice to get the best of both worlds out of your headers? Speedway Motors has solved that problem with our exclusive heat resistant Armor Hot Coating. Now you can keep that great look with longer life.
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