is my rear blowing?
Thread Starter
Staging Lane
Joined: Feb 2006
Posts: 57
Likes: 0
From: Anaheim, Ca
is my rear blowing? That might not sound right but anyway's I just bought a 98 m6 z28 with some minor mod's like lid/filter, ported maf, msd wires, Hurst shifter, tune and 4.10 gears. I've been seeing a lot of talk about 4.10s in stock rear ends not lasting long at all and its getting me worried. It seems like from talking to the previous owner that the gears have been in the car for around 20k miles and I notice what seems like a slight shake accelerating in first and second gear, usually while making a turn onto a street while the cars cold. Could this be the gears taking there toll on the rear end or something else? My buddy has been trying to get me to take the car to the track for 1/8 mile drags but I don't want to have to be towed home. Car is said to be dyno tuned at 315rwhp and 325rwtq. thanks
Teching In
Joined: Mar 2006
Posts: 15
Likes: 0
From: W.Warwick, RI
does it make noise when cruising to a stop....kinda like a humming/crunching noise? Thats the noises my rear end made when it was on its way out. It didnt do it so much when taking off as it did when it was slowing down or coming to a complete stop.
Thread Starter
Staging Lane
Joined: Feb 2006
Posts: 57
Likes: 0
From: Anaheim, Ca
if I could I would buy a 9" or 12 bolt but that's just not possible right now. It doesn't seem to make any noises while slowing down but I do hear a whine under the exhaust sometimes which should be normal I'm told when going to 4.10's and from the 50 ft 1st and 2nd gear burnouts I was doing last Saturday 
it does have a limited slip or locker of some sort.
it does have a limited slip or locker of some sort. Mine has always made a whining noise, during accel and when slowing down, its just the rearends, as for goin out, you never know about them, when its there time they go, some hold up good when drag racing some dont, good luck !
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Staging Lane
Joined: Feb 2006
Posts: 57
Likes: 0
From: Anaheim, Ca
Originally Posted by LastHawk02
my friend had 410s in his TA blew the gears right out the casing that was a bad scene and he was parked and went to put it in reverse and ka boom
Originally Posted by duffman2
That might not sound right but anyway's I just bought a 98 m6 z28 with some minor mod's like lid/filter, ported maf, msd wires, Hurst shifter, tune and 4.10 gears. I've been seeing a lot of talk about 4.10s in stock rear ends not lasting long at all and its getting me worried. It seems like from talking to the previous owner that the gears have been in the car for around 20k miles and I notice what seems like a slight shake accelerating in first and second gear, usually while making a turn onto a street while the cars cold. Could this be the gears taking there toll on the rear end or something else? My buddy has been trying to get me to take the car to the track for 1/8 mile drags but I don't want to have to be towed home. Car is said to be dyno tuned at 315rwhp and 325rwtq. thanks
Thread Starter
Staging Lane
Joined: Feb 2006
Posts: 57
Likes: 0
From: Anaheim, Ca
Originally Posted by Exotic Performance Plus
I'd look for a broken tranny mount, which is all too common in these cars as GM chose to use the tranny to help with the rear suspension. The torque arm connects from the rear to the tranny from the factory, and causes the tranny mount to break. I'd use a pry bar and see if it is loose. This might be what the slight shake while accelerating is from. Bob