LEB Ben
Arrogant A-hole At-Large
I have a few sets of headers I'm looking at picking up...they're in original packaging, but no indication of application...assumed to be for the 351M/400. I know with the 400, I have to be careful due to the change from solid axle to TTB in 80. What measurements should I take to check for related clearance on the truck, and what measurements should I tell the seller to check for on the header. What point on the frame do I need to measure for clearance? And what other points of contact do I need to worry about, and should ask the seller to measure? Anyone know the appropriate exhaust port distance on a 400???