Frank_Blotto

I put the rear axle from a '95 camaro wtih discs on my 87, everything is fine except that the passenger side rotor is mounted on the axle crooked. What would cause this? It has a fixed calipher, so when it's bolted on, it is pushing it front of the rotor outwards. Is this a calipher problem, or an axle problem? Any ideas?

DuronClocker

iTrader: (1)

Sounds like an axle problem, but it could be either. Take the rotor off and see if the axle flange looks crooked at all like how the rotor looks.

Frank_Blotto

Ugh. I really hope the axle shaft isn't bent. I'll check on that tomorrow, and let you know what I find. There's no way to safely fix a bent shaft is there? I'd really rather not pay the money for new shafts...ugh... thanks for the tip though.

Frank_Blotto

Yeah. The end of the axle shaft is bent, the rotor wobbles when I spin it... What a pain. Is it possible/feasible to bend it back in place? Is it worth it check the junkyard for a new shaft or should I just fork over the money for new ones?

DuronClocker

iTrader: (1)

Cheapest route = junkyard.
Next best route, snag the rear end out of a 4th gen. If you don't plan to use vette/4th gen wheels and don't want your tires kicked out a bit, then find a rear from a 90-92 car.
Best route would be to buy a new posi and new aftermarket axle shafts.

Reason I recommend upgrading to a newer rearend is because all 90 and newer 10 bolts received 28spline axles vs. the 26 spline in your car. If you pull an axle out of a junkyard, be sure to count the splines on it before you buy it. If its a 26 spline, then you're all set. If you can find a pair of 28 splines out of a 90-92 car, then use those and get a newer differential/posi unit. 28 spline axles will not fit a 26 spline differential.

RTFC

I just put new 26spline Moser axles in my car and had the flages drilled also for an extra $20 for both sides. They were dilivered to my doorstep for a grand total of $298.00 including shipping charges from Moser (Indiana? to So. Cal). You run a great chance that anything from a junkyard has been hit or ran over a curb and is bent. New is the safest route.

DuronClocker

iTrader: (1)

Hey just curious Dean, how much do those weigh compared to the stock axles? Just curious because I'm trying to decide what to do for my rear end one of these days. Have a 4th gen 10 bolt. I think I'm going to wait for one of the guys aruond here to finish his project before I decide on a rear, he's making a hybrid rear using 8.8" Ford center with 10-bolt axle tubes and custom Moser (I believe) axles. Just curious how the Moser ones compare to stockers in the weight category.

Frank_Blotto

Heh, the axle in question is already 4th gen, so I guess I've gotta hunt down a 28 spline shaft at the yard. Do all 4th gens have 28 spline? What third gens did? Also, should I replace both of them, or just one? Thanks folks!

RTFC

Frank, 4th gen axles are longer(wider) than 3rd gen axles so they do not intechange. I believe the 4th gen axles are about 1 1/2" longer overall because the flange to flange width of the 4th gen housings are about 3" wider from what I have read. I know they are wider but don't quote me on how much.

Duron, I never weighed the new or old ones before I installed them. The axle shaft on the new ones is slightly thicker (Moser uses the same exact axles and machine them into 28splines also) but the flanges were drilled of course for rotation lightness. I would guess them to be about the same overall weight but the rotation weight of the Mosers is less. After the machined spline section down to 26splines, the axles imediately taper up to a thicker dia than the stock 26spline axles. So again, these same exact axles could have been machined to 28splines instead of 26splines if thats what you order.

Frank_Blotto

Duh. I knew that the 4th gen is wider, I have one on my car.

RTFC

You can see the taper down to the 26spline width here in this picture. The stock axles were thinner than these heading out towards the flanges.

DuronClocker

iTrader: (1)

Ah okay, cool. The 4th gens are 1 5/8" longer on each side if I remember my measurements right..