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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Gear Ratios

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Old Jan 28, 2010 | 01:44 AM
  #1  
460/5's Avatar
460/5
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Zombie Survivalist
Joined: Feb 2009
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From: Rock Springs, WY, USA
Gear Ratios

Does anybody know the gear ratios of the ZF5 and/or the ZF6? and will the ZF6 bolt up to a 7.3 or 6.9 pre-powerstroke diesels?
 
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Old Jan 28, 2010 | 01:01 PM
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blakem_85
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ZF5 1st - 5.72:1, 2nd - 2.94:1, 3rd - 1.61:1, 4th - 1.00:1, 5th - 0.76:1

ZF6 1st - 5.79:1, 2nd - 3.31:1, 3rd - 2.10:1, 4th -1.31:1, 5th - 1.00:1, 6th - 0.72:1

As far as the them bolting up I'm pretty sure that the bellhousing bolt pattern is the same as long as the transmission came out of a big block or a diesel but I don't know about the input shaft size between the two. I would guess that they are the same.
 
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