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I'm looking for full length headers that will work with my 1991 F-250 4x4 w/ a 351W and C-6 trans.
The problem is that I need at least 1 5/8" primaries....so I think the Lightning route is the way to go. I don't think the axle or the suspension will cause interference....It has 8" lift with leaf springs and a 3" body lift which will set the firewall a bit higher.
Does anyone foresee any problems with the compatibility?
It's hard to say with a 4x4, but i'd suggest going with a set that has 1 3/4 primaries.
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Matt C.
Intercooled Vortech, Victor Jr. heads, roller cam, 62lb injectors, 2800 stall converter, Eaton Locker, Pickrel Headers and Exhaust, FMS Mass Air using SCT tuning software. Road trip and dragstrip ready!
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Gen 1 Lightning Header compatibility
