dual pattern camshaft

And that is the thinking behind why I have dual 3inch pipes; so the headers can do what they are supposed to do. Not cuz I thought I would need them, for exhaust flow, cuz obviously, a little 367 can get by with a whole lot less. I wanted the headers to think they were hitting atmosphere.While that's not possible with street mufflers,I believed that in this case;more was better.I think it worked out for me.

I will say one thing tho; To install a GearVendor, I had to sacrifice the H-pipe. Well I felt that almost right away. The TTI H-pipe was pretty small, So for me it was a no-brainer, just cut it out.I have a M/T so low speed torque is very important. When the H-pipe went, so did quite a bit of Part-Throttle torque; from just-off-idle to about 2000rpm . But since I now had O/D, I just swapped in bigger gears.
I have no idea what goes on in that little pipe, but I think it might be..... magic.