Re: differential
Thread Starter
Intermediate
Joined: Jul 2014
Posts: 42
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Re: differential
Happy 4th everybody! Have a 79 Vette, all stock except transmission is a 700R4. Very happy performance wise. When she was working fine, lol. So I am in Los angeles. Reviews on corvette shops semi near me scare me. I need a new differential and also wanna replace the yokes with the hardened ones I am reading about. Don't know the gears but love the rpms at higher speeds. Anyone know where I can have this done at a reliable reasonable place in my area. As far as the rear end goes. Whines around corners when warmed up. When I drive like 10 miles I can hear pounding and grinding, loud when I make turns. I am guessing my core is worthless but what to do where to go. Need someone that will give a set price and ready date (only car, need to work to pay bills). Even considered a new rebuilt unit from like ecklers shipped to my mechanic. He is a general mechanic, not a c3 mechanic as I feel I should go to. Cannot afford to get screwed on the price. Need up front price. I can't drop 1 cent over 2.5k. Suggestions, advice will be much appreciated. Going to do this by August 1st!
Thanks, Steve
Thanks, Steve
Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
I would start by replacing the fluid. Have it sucked out and then add 2 bottles of posi additive and fill with gear lube. Go do some slow hard turns or figure 8's to get the additive worked into the clutches. Your symptoms sound like typical posi clutch chatter.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
J&D Corvettes in Bellflower,
OR,
Unitrax in Anaheim. There is a Vette on the rack every time I go there.
All Unitrax does is diffys. Hell, they did mine 15 years ago or so. (Before I knew Gary and Tracdogg).
OR,
Unitrax in Anaheim. There is a Vette on the rack every time I go there.
All Unitrax does is diffys. Hell, they did mine 15 years ago or so. (Before I knew Gary and Tracdogg).
Drifting
Joined: Apr 2010
Posts: 1,857
Likes: 332
From: Cartersville GA
Like '75 says change the fluid first.....Sounds like the clutches are sticking.....If so the fluid change with (2) bottles of the posi additive may fix it.....Lot cheaper than a rebuild.
Brian
Brian
Racer
Joined: Jul 2009
Posts: 350
Likes: 7
From: springstead wi
Mine was doing the same . I took a 1/8 inch hose which drained real slow and was able to get all most all the fluid out of it , it drained (dripped ) for almost 24 hours . Replace the fluid and added 4 oz additive and haven't had a problem since about 6 weeks .
Thread Starter
Intermediate
Joined: Jul 2014
Posts: 42
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re: differential
Steve
