zf 6 trans
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Joined: Dec 2002
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From: USA
The ZF S-650/M6HD manual 6-speed tranny was available starting in '99 on the new body trucks, used behind the 7.3L PSD only. The old ZF 5-speed manual was available on the new 5.4L and V10 motors that year with a different bellhousing bolt pattern to fit the new motors and the 4R100 4-speed auto was available on both gas motors and the diesel. The 4R100 was replaced by the TorqShift 5R110 5-speed auto on the diesel motors in 2003 when the 6.0L PSD replaced the 7.3L, but the 4R100 continued to be used on the gas motors. Both the 7.3L and 6.0L diesels were available in 2003. No more 7.3L PSD after 2003. I'm not sure when the ZF 5-speed was phased out, but it appears to have been gone by 2003, as the 6-speed was available on all motors in 2003.
So the short answer is- the 6-speed can be found on the 7.3L diesel from '99 to 2003 and on the 6.0L diesel, 5.4L gas, and V10 gas motors from 2003 to present. You cannot use one from a V10 or 5.4L on a 7.3L PSD though, different bolt patterns
So the short answer is- the 6-speed can be found on the 7.3L diesel from '99 to 2003 and on the 6.0L diesel, 5.4L gas, and V10 gas motors from 2003 to present. You cannot use one from a V10 or 5.4L on a 7.3L PSD though, different bolt patterns
Last edited by SoCalDesertRider; Apr 23, 2006 at 06:03 PM.
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so the answer to my thing is the old non directed injected non turbo diesel 7.3 of 91 has the same bellhousing bolt pattern as say a 95 direct injected turbo diesel aka powerstoke 7.3 ?? right yes or no
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thank for your help! its a lot of coin to spend on a trans to guess you no what i mean i have a 91 f350 drw crewcab 2wd that i just made 4wd it had a zf5 speed with a gearvenders spilter so now i would like a 6 speed 4x4 trans an transfer case then put my gearvenders trans back in so it would then be a 10 speed.i am getting ready to add twin turbos to it soon so thats what i am trying to do if you wanted to know and again THANKS FOR YOUR HELP!! friends make friends go fast
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