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Home » Public Forums » GMCnet » Looking for 3.21 final drive (My final drive I think is on borrowed time- but have good trip report)
Looking for 3.21 final drive [message #323375] Tue, 05 September 2017 08:56 Go to previous message
lqqkatjon is currently offline  lqqkatjon   United States
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
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Senior Member
Just thought I would toss this out there.

Had a great trip yesterday hauling 10 people down to the MN state fair. Gmc performed well and everybody had a great time. I am not a big fan of the state fairs, but for doing the driving s friend of mine, who happens to be good friends with the headliner, hooked us up with full access back stage passes for Sam Hunt at the grand stand.

My original 3.07 final drive has a whine, that I am fairly certain at this point is the final drive. It has been whining a long time now, and i have drained and put new fluid in. I know i need to get it fixed, and I did pick up another 3.07 that I may end up putting in soon, and after driving down though
The metro yesterday, thinking the drive could very well grenade leaving my coach and the 10 people on board in a mess, that I really need to get it done.

My preference is to go to a 3.21. I know this may start the posts of what final drive is best and I am aware of the options.

I am just wondering if anybody out there has a 3.21 collecting dust, that they are ready to part with, or have one that needs a total rebuild sitting around. I have been looking for a core lately, and junkyards seem to not have much of a supply.





Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/
 
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