1 3/4" headers

yellow rose said
No step, fairly big tubes (2.125 on a 434 chev) with a 26 inch primary and a 4 inch collector 20-22 inches long.

They beat the stepped headers by over 80 at peak and was better than 50 average everywhere.

That's a mighty generous size header pipe tube.
And the size of the step header is?

Headers are way more science than most think. Even the turn coming off the head is a big deal. The sharper the turn, the bigger the tube MUST be. Factory chassis cars are at a disadvantage because there is almost no way to get enough straight tube off the port.

Yup! I guess that's why that "Street Outlaws" ElCamino has pipes straight out the fender! LMAO!!!

When I was learning a bit of header building, my mentor would flip out on every bend. It was like his head was ready to POP! Off of his shoulders.