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14 bolt SF to 14 bolt FF swap?

sled_dog

1 ton status
Joined
Sep 3, 2002
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U joint swap right over or not? My 89 3/4 ton burb is gonna get a 14 bolt FF in place of its present SF.
 
Mine were a little big. I used a 1ton rear shaft and standard U joint but had to grind a little on the cap edge to fit with in the ears of the SF. No vibes and cheaper than a conversion joint.
 
Opps. Sorry I'm /forums/images/graemlins/screwy.gif I've got my FF on the stand rebuilding it. So I put a SF in while that was going on. The ujoints may be a tad small then.
 
I think the the 14sf uses an 1350 u-joint.


what's the difference between an 3/4 and 1 ton 14FF, besides the shock mounts an spring perches?
 

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