Ford Mustang Forums banner

Mac 351w longtube headers hit floor board

6316 Views 32 Replies 7 Participants Last post by  408foureye
I mocked up my drivetrain and found the pass side collector hitting the floor board. Driver side looks fine. When I measure the collector height from the ground, the pass side sits up 1" higher, which is causing the floor board interference. The headers are 1 3/4 Mac longtubes on a 351w with convertible mounts. I also bolted up the headers with the engine block and heads on the stand - the collectors are still uneven by the same amount. Anyone else have this issue?
1 - 1 of 33 Posts
is the motor level in the car ? the only other thing I can think of is would lower motor mounts give you the clearance you need ? might be easier than send the headers back... If I recall you can get 3/4 of a inch with drop mounts..
1 - 1 of 33 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.