Rear Drivetrain issues?
Thread Starter
Heel & Toe
Joined: Mar 2014
Posts: 17
Likes: 0
Rear Drivetrain issues?
New C3 Corvette owner here... new as in drove it 1500 miles from its previous owner yesterday. No pristine queen here... just hotrod land. 1980 Black-on-black t-top 4-speed 350 (modified 4bbl L48).
The rear end gives me a bit of a whine and an occasional thump. What should I inspect? The hod-rod guy in me says check the driveshaft and make sure that the differential fluid is full. Any other suggestions from the experts?
The rear end gives me a bit of a whine and an occasional thump. What should I inspect? The hod-rod guy in me says check the driveshaft and make sure that the differential fluid is full. Any other suggestions from the experts?
Safety Car
Joined: May 2004
Posts: 4,365
Likes: 1,589
From: los altos hills california
New C3 Corvette owner here... new as in drove it 1500 miles from its previous owner yesterday. No pristine queen here... just hotrod land. 1980 Black-on-black t-top 4-speed 350 (modified 4bbl L48).
The rear end gives me a bit of a whine and an occasional thump. What should I inspect? The hod-rod guy in me says check the driveshaft and make sure that the differential fluid is full. Any other suggestions from the experts?
The rear end gives me a bit of a whine and an occasional thump. What should I inspect? The hod-rod guy in me says check the driveshaft and make sure that the differential fluid is full. Any other suggestions from the experts?
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
Likes: 7,053
From: New Or-leens Loo-z-anna
Rookie here......
Congrats #1........on the new Vette!
Congrats #2........on successfully driving it 1,500 miles without having it serviced/fluids changed before you started the trip home!
Congrats #3.......on getting ready to get greasy.........or bring it to someone reputable so they can get greasy
Congrats #1........on the new Vette!
Congrats #2........on successfully driving it 1,500 miles without having it serviced/fluids changed before you started the trip home!
Congrats #3.......on getting ready to get greasy.........or bring it to someone reputable so they can get greasy
Thread Starter
Heel & Toe
Joined: Mar 2014
Posts: 17
Likes: 0
Thank you... bushings it will be then.
Congrats #2........on successfully driving it 1,500 miles without having it serviced/fluids changed before you started the trip home!
-I changed the oil, checked the fluids, replaced missing bolts, cap-coil-rotor because they had issues... basically, I did the inspection before I drove off.
Congrats #3.......on getting ready to get greasy.........or bring it to someone reputable so they can get greasy
-I'm pretty good at getting greasy... and very cut up in the process! I have, *counts* 10 cuts on my hands from the weekend. Mostly from replacing missing header bolts and working around an overly large intake in a small space. Also had to wire up a power point since someone had stripped this poor car of its power point.
Basically, I was making sure that there wasn't something corvette specific to look at. This is by FAR not my first muscle car, but it is my first 'vette!
I will check those bushings. I bet a dollar they are bad... it's from texas after all.
-I changed the oil, checked the fluids, replaced missing bolts, cap-coil-rotor because they had issues... basically, I did the inspection before I drove off.
Congrats #3.......on getting ready to get greasy.........or bring it to someone reputable so they can get greasy
-I'm pretty good at getting greasy... and very cut up in the process! I have, *counts* 10 cuts on my hands from the weekend. Mostly from replacing missing header bolts and working around an overly large intake in a small space. Also had to wire up a power point since someone had stripped this poor car of its power point.
Basically, I was making sure that there wasn't something corvette specific to look at. This is by FAR not my first muscle car, but it is my first 'vette!
I will check those bushings. I bet a dollar they are bad... it's from texas after all.
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Race Director
Joined: May 2006
Posts: 18,758
Likes: 2,590
The bushings for the rear differential front are about $31
http://willcoxcorvette.com/product_i...ducts_id=12141
http://willcoxcorvette.com/product_i...ducts_id=12141
Safety Car
Joined: May 2004
Posts: 4,365
Likes: 1,589
From: los altos hills california
Depends where you stand on the rubber v. poly debate
http://forums.corvetteforum.com/c3-t...r-bracket.html
I took my poly out and put rubber in there. This does not appear to me to be any part of a handling issue.
Racer
Joined: Apr 2008
Posts: 406
Likes: 46
From: Lebanon OH
I tackled the rear end of my 79 about three years ago because of a thumping, bumping sound. It turns out that the two bolts holding the driver's side of the differential to the cross member had backed nearly completely out, leaving a gap of about half an inch between the differential bolt holes and cross member. I don't know how common that is, but you might want to check that too.
