I have one year of daily driver experience using an X pipe on a '56 235 with Fentons and two 24" cherry bombs. It has quieted the exhaust noise (deeper tone, minimal rap) and I can decelerate w/o having to worry about noise bothering my neighbors.

I live in the piedmont (foothill) region of central Virginia and am consistantly challenged with hills and occasionally a mountain pass @~2500 ft. From the onset the X was installed I perceived better pull up hills and the mountain pass.

Would I do it again? Yes. Do I think it has better value than washing the truck or rolling up the windows to decrease drag? Yes. Do I have dynometer testing to validate my findings? No.


'49 Chevy 1/2 ton, '56 235, 848 head, Fentons, x-pipe, 1-2bbl H-W.