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Mod | | | Forums66 Topics128,087 Posts1,055,985 Members48,430 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | I've been looking at some gearsets for my 14 bolt. I'm wondering if anyone has ever tried U.S.A. Standard Gear or Superior Gear? The U.S.A is about 1/2 the price of the OEM or Yukon counterpart and the Superior is about 2/3's the price. I've heard the cheaper gearsets can be noisey, but some say it's all in how you set them up.
Any ideas?
Chris | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Chris, when you say "14 bolt", do you mean that cover has 14 bolts, or the ring gear has 14 bolts, or the carrier is held in by 14 bolts??? Since I'm not into hot rodding those half stated terms always cornfuse me. Seems like everyone has their own opinion on what they are discribing. You know, 14 bolt, 9 bolt, 12 bolt, but what bolts?????? Thanks Denny Graham Sandwich, IL
Denny G Sandwich, IL
| | | | | Joined: Apr 2008 Posts: 133 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 133 | richmond gear is what use usually.what gears are you running now? going down or up? correct, only noisy due to set-up on tolerences. denny, #of bolts in the cover.not an opinion, common terms.
daren | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Aha, Denny,
I know why neither of us knows what a 14 bolt is. And the later-post explanation is almost incomprehensible (complete sentences are lacking).
10.5” Corporate 14 Bolt Differential is a heavy duty differential that is used by Chevrolet and GMC trucks and vans since 1973. Of course it might have been a 14-bolt from 64 and later.
A good question from us would have been: "are you referring to a 9.5" or one of the 10.5" GM 14 bolt rear ends?"
| | | | | Joined: Mar 2008 Posts: 1,775 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 1,775 | I actually have both sitting here in the garage, but what I'm looking for is for a 73-85 10.5". Been looking around and Richmond, Yukon, and OEM seem to be at the top of the price range. Superior, Motive, and Nitro are middle of the road. U.S.A Standard is by far the least expensive.
Anyhow, I'm NOT looking for the cheapest, just the best value for the money. I'm only going to do it once.
Chris | | | | | Joined: Apr 2008 Posts: 133 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 133 | hey, am i back in english class? my fingers can't keep up with my mind,so i use short incomplete sentences to get to the point. to answer the question, in my opinion richmond is the best for the money. (yea i know, no capitals in my posts either)
daren | | | | | Joined: Jul 2011 Posts: 35 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2011 Posts: 35 | I used U.S.A. Standard Gears in my Jeep. The results work good. No gear noise. The only down side I saw was some runout on the pinion face. I used a pinion depth gauge and got .005 difference in measurement if I turned the pinion.
If you were not using a depth gauge you'd never know. | | |
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