Back when my SV motor was stock I read all the posts I could find on the tubular headers SS carries, which I believe were/are made by Falcon. Long story short most felt the stock headers were a good design and the the expense of the tubular headers would not be justified by a few HP gain.
Fast forward 10 years and my newly rebuilt motor is nearly complete. 20 over flat top pistons, kb grind cam, vizard mod, larger Datsun valves, Weber 32/36 with webcom manifold, and fly wheel lightened to Le Mans specs. Compression came out to 9.5 or so, will run on 92 octane non-ethanol. Now I’m wondering if the headers make more sense with the motor warmed up a bit. I live in the mountains so low end grunt is my goal over total HP, and I have factory OD in the car. For those that have rebuilt there motor for more power, did you go with the headers and was it worth it? Or do I put the money towards a TVR flywheel?
Fast forward 10 years and my newly rebuilt motor is nearly complete. 20 over flat top pistons, kb grind cam, vizard mod, larger Datsun valves, Weber 32/36 with webcom manifold, and fly wheel lightened to Le Mans specs. Compression came out to 9.5 or so, will run on 92 octane non-ethanol. Now I’m wondering if the headers make more sense with the motor warmed up a bit. I live in the mountains so low end grunt is my goal over total HP, and I have factory OD in the car. For those that have rebuilt there motor for more power, did you go with the headers and was it worth it? Or do I put the money towards a TVR flywheel?