Can anyone help me? Please!
My 68 427 4sp with 69k miles started making a squeek from the right rear. We were on a trip when it got louder. My son and I were absolutely sure it was the trim ring because that is the sound. When you knock on the ring that is the sound. We yanked the ring off and the center cap, but no relief was found. It shortly there after started grinding, popping and sounded exactly like the tire was rubbing, but I can find zero evidence of any contact. When I was ready to call the tow truck it popped, crunched and went away. I drove it another 100 miles towards home when it started again. It made a whine and then a screach then a pop and went away again. Another hundred miles it started a heavy, heavy grind, then went away. I went a total of 400 miles this way. Every sound you could name was heard distictly. Nothing was ever hot to the touch: U-joints, axle stubs (through) wheel, rim etc..... I jacked up that side of the car and rotated the wheel and shook it and everything seems normal. No noises or excessive looseness. I am lost. I should think a bearing would have siezed over the 400 miles making noise. I would think a u-joint would have blown apart or at the very least gotten hot. I can not explain the rubber screaching sound either. It was very clearly a rubber sound. I don't want to start guessing at parts. Any thoughts would be very appreciated.
these cars can make some very very odd noises... but, if'n it were me, i'd start with the u-joints, look carefully for any sloppy movement while torquing the wheel. Next while its jacked up, push and pull on the tire with hands at the 12 o'clock and 6 o'clock position to see if there is any excessive movement in the bearings... otherwise, you might have something with the parking brake that may have come loose....rolling around and getting caught up in there..sometimes it is hard to locate a loose beaing or u-joint while the half shaft is still connected.
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StingrayJim NCM Lifetime Member #1936
Stingray's '76 StingrayJr's '78 Lil Red '94 (click each one to see a bigger version)
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Joined: 11/8/2003
Posts: 19507
I'm gonna go out on a limb and say you have a spindle bearing that took a doo-doo. They don't always just lock up. I drove the '74 up to the 5th Anny at the NCM, then up to West Virginny and back in the same trip with the rear bearing on the driver side howling. It didn't get really bad until we were almost home. Could also be a u-joint or park brake. U-joint noises can sometimes come & go, as could parking brake components that are floating around.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
Vette(s): 1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion
Joined: 10/14/2003
Posts: 1152
by most of the types of noise it sounds like a bearing but what about the differentials clutches, it would be easy to have the rear serviced with the proper lube if the 68s are the same.
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
Joined: 5/18/2010
Posts: 1518
Sounds like you have the same noise mine made before the bearings exploded..I thought it was just the parking brake..but it was also the inner bearing..not fun to have let go at 60 mph..I am doing a 73u rear suspension now if you look up my posts on it..I can go into heavy detail if need be.
Rich
yostusota2011-06-08 10:41:08
____________________________________ My first parade at Carlisle 2010
You may have a bearing out but I'm with rraider1, change the oil in the rear end and put back the proper oil and the proper additive. It is worth a try and way less expensive.
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C3VR Life Member #4 NCM Life Member #994 Vietnam Helicopter Pilots Association Life Member
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