Manual Trans
 

I have a 97 F350 with the 5 speed tranny how hard and is it posibble to put the newer 6 speed in it. any input is apriciated

I have done a little research on it before and I know u have to put a super duty clutch in it, fabricate your own cross brace to support it, and you have to get your drive shaft cut as the ZF 6-650 tranny is longer than our ZF 5's. I also think someone said it was a really tight onmthe floor board and they had to beat it up with a hammer a little bit.

Thanks for the input i apriciate it. where is the best place to look for one and do you have to change the flywheele when you change the clutch. i already have a southbend clutch and flywheele

the ZF 6 is much taller. i would do it right and modify the tunnel instead of hammering it out. the flywheel should be the same dimensions. the wiring shoud be the same... but you only get a low gear with the swap. how often do you need a really low gear?

i dont need a lower gear. i was wondering though i had a 99 6 speed and at 65mph it ran about 1800 rpm this truck runs about 2100 to 2200 rpm at the same speed. im just trying to git a little better fule mileage. :humm:

It would be easier to swap rear gears :humm:

my 94 with a ZF5 has 4:10 rears. my 99 with the ZF6 has 4:10 rears. both are at 2,500 RPM at 75 MPH.... you won't gain anything