Duntov differential
Instructor
Joined: Dec 2009
Posts: 199
Likes: 35
From: USA
I had Gary at Vtech Corvette rebuild mine and put in 3.73 gears March 2012. He did a great job, I highly recommend him. I'm real pleased with how it performs now (actually burns rubber in first and second gears now).
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Basically took $600 from me and sent parts that failed in short order. Wouldn't respond when I contacted them about it. Parts were strut rods, diff yokes and trailing arm spindles. One of the spindles was just miles from snapping in half when I replaced it, yokes were worn out after few thousand miles. Strut rod bushing fell off.
Instructor
Joined: Sep 2007
Posts: 198
Likes: 0
From: Colorado Springs Colorado
In '07 I purchased a rebuilt rear differential from Duntov, for my 1981. I purchased it based solely on price, as they were cheaper than anyone. Very BIG, COSTLY mistake. After installing, it was extremely noisy. Removed it, found the side yokes were not even close to being in tolerance. Didn't go any farther, pitched it in my busted parts pile and there it sits. In hindsight, I should have done more research, and checked tolerances before installing. I learned a valuable lesson from them, and think of my Duntov experience before I buy anything, from anyone, since then. Like zwede, I was fortunate to find Gary @ Vtech with help from this forum. His service, and quality is top notch. I installed his Rebuilt Diff, and Trailing Arms, (after checking what specs. I could), and they're still running strong since '08.
Heel & Toe
Joined: Feb 2009
Posts: 22
Likes: 0
I also bought a duntov diff. for my 81. Installed and test drove. The diff.was very noisey. I ended up rebuilding my original diff. which I should of done in the first place. Didn't have time to rebuild at the time. I also waited 2 months for the diff. Not impressed.
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Instructor
Joined: Nov 2011
Posts: 103
Likes: 1
From: Bailey CO
I took them my power steering cores and they immediately gave me a discount on wheel bearings, shims, and rear spindle tools plus a 15% discount for being a Corvette forum member. This was about 3 weeks ago. So i consider my buying experience positive. I can't speak to their workmanship, though.
Race Director
Joined: Dec 1999
Posts: 11,096
Likes: 990
From: Sierra Foothills CA
