Anyone ever swap in a Chevy ZF S6-650 six speed? 5.79 first gear with a .73 OD gear. They were behind the 8.1L engines. Are they the standard Chevy boltpattern? Just thinking.
K5er4Life said:sounds dangerous and complicated Im sure, think of all the wiring and computer controlled crap that those things probably have. Just get a 700.
[URL="http://www.smileycentral.com/sig.jsp?pc=ZSzeb066&pp=ZNxmk572DHUS"]http://www.smileycentral.com/sig.jsp?pc=ZSzeb066&pp=ZNxmk572DHUS[/URL]

DO IT
hi pinion said:If you can make that work, that would be really cool.![]()
Why hasnt anyone done this yet?

Greg72 said:The first guy gets the "glory" but everyone else gets to do it cheaper and easier once the solution is found.
- SM465s are cheap
- ZFs and T56s aren't.
- Nobody has done it yet, so some sucker has to take a chance and spend all the $$$ to figure it out.
Innovation in our hobby always starts out looking like this, however.
There was a time when people didn't run shackle flips and D60 fronts either..!!!
I was one of the first to replace the ZF5 speed with a ZF6 speed tranny in a pre-99 ford pick-up. I had a 97 which kept eating 5 speeds, and I finally decided to change over to 6 speed. While I don't regret the result one bit, in fact the opposite, I love it, It was quite the learning experience; and that tranny is one heavy mother when you have to stab it and remove it 3 different times till you figure out all the little differences. However on that note, I'm looking for an NV 5600 from a dodge 4x4 to put into my latest project; an 89 crew cab with a 12 valve cummins.ARAMP1 said:Anyone ever swap in a Chevy ZF S6-650 six speed? 5.79 first gear with a .73 OD gear. They were behind the 8.1L engines. Are they the standard Chevy boltpattern? Just thinking.
tarussell said:I "think" the rear output shaft on the GM ZF650 is the huge 1-1/2" 29 spline and there are many options on transfercases to accept that input wise.