Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Yukon 3.75 gears for Ford 9 inch....noise
View Single Post
  #125 (permalink)  
Old 04-21-2011, 07:38 AM
96lt4c4's Avatar
96lt4c4 96lt4c4 is offline
Registered User
Last photo:
Join Date: Oct 2009
Location: Bardstown, KY
Age: 38
Posts: 158
Wiki Edits: 0

Thanks: 4
Thanked 1 Time in 1 Post
Originally Posted by prostreet6t9
Thats pretty common actually. Sometimes customers are hard to figure out and will gripe if they have to clearance the case if a thick hat is used. Other customers are fine with it. I personally always use the thick and do some grinding if needed.

I set it up last night and it clears the case but was hitting the billet cap. A flapper wheel on my grinder took care of that, no big deal at all. I didnít have to remove much material. I would rather have some off the cap than a bunch off the posi. Still getting some run out on the ring gear though. I check both ring gear mating surfaces, spinning the posi and using a dial indicator and it is dead straight. It has to be coming from this ring and pinion. I go from one thing to another. My back lash is varying about .002 around the ring gear. What is acceptable? I know going through this I have had some with no run out. This is a new Motive performance 3.89 gear. I am thinking about sending it back to Summit and trying another one.
Reply With Quote