My 10 Bolt Just Blew Need Your Help
06-08-2008, 01:17 PM
#2
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I would go 9", i bought my houseing/axle package from Bob @ EPP, very good people & service, Midwest Chassis is another, i have a total of 1400.00 in my 9", granted its not a Nodular houseing with all the goodies, but its still a hell of alot stronger then the 10 bolt at its best IMO, i found a completely rebuilt 3rd. member on e-bay for 355.00, it has Trac-lock Posi (new clutches), 4 pin carrier, you don't need to spend 2400.00 right off if you can't swing it, just invest in the houseing/axle package for 1000.00, then up-grade from there.
06-09-2008, 05:54 AM
#3
I would go 9", i bought my houseing/axle package from Bob @ EPP, very good people & service, Midwest Chassis is another, i have a total of 1400.00 in my 9", granted its not a Nodular houseing with all the goodies, but its still a hell of alot stronger then the 10 bolt at its best IMO, i found a completely rebuilt 3rd. member on e-bay for 355.00, it has Trac-lock Posi (new clutches), 4 pin carrier, you don't need to spend 2400.00 right off if you can't swing it, just invest in the houseing/axle package for 1000.00, then up-grade from there.
http://www.exoticperformanceplus.com...html?item=1116
Here is our complete Moser nine inch package with the center section.
http://www.exoticperformanceplus.com....html?item=145 Bob
06-09-2008, 03:22 PM
#4
Sounded like you have a t-56 and would say 9", if you are a 4L60E the you can get away with a 12 bolt. I have rebuild mine 2 times and said screw it and have a S-60 on it's way. I would say DO NOT rebuild or try to strengthen the 10 bolt. The money you put towards rebuilding can be a good portion of that new 9" or 12 bolt. I've thrown $1500 at my 10 bolt, tell me I don't fell like a retard for not just going through with getting a good rear.
06-09-2008, 06:55 PM
#6
Put a 12 bolt into a early Chevelle, Nova, Camaro, etc and you can beat the crap out of it, and not hurt anything. Put one into one of our cars with a torque arm, make a couple 4000 to 5000 dragstrip launches, and I can just about guarantee you'll pick up gear noise. If it is a drag only car, you'll never know or care about the gear noise. Drive your car home from the track, and the noise will drive you nuts. I feel the torque arm stresses the 12 bolt housing, causing distortion. We have never seen this happen with the 9 inch housing.
Exotic Performance Plus strongly recommends the Moser nine inch. This rear is even tougher than the Moser 12 bolt, and the horsepower of the late model F Body cars keeps escalating every year, which requires a very strong rear. With the recent introduction of the 6.2L GM aluminum block and the excellent flowing 6.2 litre heads, the horsepower of these cars is going to just keep climbing at a very fast pace.The nine inch will handle the power, plus we prefer the way the torque arm is bolted to the nine inch in the same way the oem rear-end is attached. (This is the only good thing about the stock 10 bolt...) The Moser 12 bolt uses four short bolts to attach the torque arm, and they have a habit of loosening up, even when loc-tite is used. Why the nine inch is stronger than the 12 bolt. The 9-inch has an internal rear-pinion support that also supports the gear end of the pinion to limit gear deflection under high torque loads. This seems to be the major reason why the 9 inch doesn't start whining after high rpm clutch dumps, when the 12 bolt will pick up noise.The 9-inch locates its pinion gear lower on the ring gear to improve tooth contact, than the 12 bolt does.The 9-inch has a 0.125-inch larger ring-gear diameter and internal pinion support than the 12 bolt does. This is not much of a difference, but it is worth noting. Bob
Exotic Performance Plus strongly recommends the Moser nine inch. This rear is even tougher than the Moser 12 bolt, and the horsepower of the late model F Body cars keeps escalating every year, which requires a very strong rear. With the recent introduction of the 6.2L GM aluminum block and the excellent flowing 6.2 litre heads, the horsepower of these cars is going to just keep climbing at a very fast pace.The nine inch will handle the power, plus we prefer the way the torque arm is bolted to the nine inch in the same way the oem rear-end is attached. (This is the only good thing about the stock 10 bolt...) The Moser 12 bolt uses four short bolts to attach the torque arm, and they have a habit of loosening up, even when loc-tite is used. Why the nine inch is stronger than the 12 bolt. The 9-inch has an internal rear-pinion support that also supports the gear end of the pinion to limit gear deflection under high torque loads. This seems to be the major reason why the 9 inch doesn't start whining after high rpm clutch dumps, when the 12 bolt will pick up noise.The 9-inch locates its pinion gear lower on the ring gear to improve tooth contact, than the 12 bolt does.The 9-inch has a 0.125-inch larger ring-gear diameter and internal pinion support than the 12 bolt does. This is not much of a difference, but it is worth noting. Bob
