Fenderwell headers.....again

yellow rose said

A 43 inch primary???? I would run exhaust manifolds first.

That header is 60-70...who knows, could be more depending on your combo HP off a good set of headers.

I'd look and see if TTI makes an under chassis header. I'm not sure if the Headman header is under chassis/some tubes out the fender well but if it is, that would be better.

I can't think of a scenario where a primary tube length of 43 inches would ever work. Maybe, maybe 38 inches would be ok. 34 would be better.

Click to expand...

But yet, some how, some where, somebody was able to make power with them. Even at the ridiculous 43” tube length.

IF you play with a calculator for tube length + tube diameter, CID, you’ll find that weird (?) cam timing comes into play as well or with engine size and targeted RPM. If you mess with it enough, you’ll find to max power peak areas for both torque and hp.

OK, now your saying that makes no freakin sense at all, I know, I know. It’s kind of like pushing 100 psi down a engine throat & soon it to 10K and make ZERO torque and HP.

And that’s a tale for another day....