Not a drag car but pushing 570rwhp. What rear end?
05-24-2007, 05:21 PM
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Not a drag car but pushing 570rwhp. What rear end? My car is not a drag car its my daily driver and it is pushing 570rwhp. I want a rear end that is fully streetable and will hold up as the stock did with stock power. What do yall recomend me getting that will be good for cornering but will still hold up to that kind of power?
05-24-2007, 05:45 PM
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everyone is going to tell you either moser 9 inch or a strange 9 inch. they are both good companies to work with. you really have 2 options, either a 12 bolt or a 9 inch. the 12 bolt is far easier to change fluid and check out the gears but with the 9 inch you have the option to simply switch out the center section to swap gears. the 9 inch is theoretically stronger because of the larger ring and pinion but there really is no real world proof since there have been guys and girls that havent broken 12 bolts running 1.3 60 foots with a manual transmission. there are ups and downs with both units so its really up to you...all we can do criticize the oposite of what we have.
i have a moser 12 bolt and you could give me a free 9 inch and i wouldnt put it under my car.
i have a moser 12 bolt and you could give me a free 9 inch and i wouldnt put it under my car.
05-24-2007, 06:19 PM
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Originally Posted by Pheonix
I want a rear end that is fully streetable and will hold up as the stock did with stock power.
05-25-2007, 04:54 AM
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http://www.exoticperformanceplus.com....html?item=146
http://www.exoticperformanceplus.com....html?item=145
As has been mentioned, a 12 bolt should work just fine for your application.
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
http://www.exoticperformanceplus.com....html?item=145
As has been mentioned, a 12 bolt should work just fine for your application.
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
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05-26-2007, 05:23 PM
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I have had a Moser 12 bolt and now have a S60. Both of them bolted right up with no problem. You will have to get a custom size driveshaft for the S60. The S60 is a beast!
05-30-2007, 11:53 PM
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I have a 12 BOLT and I had gear whine, 2 weeks later I still have gear whine, perhaps a bit louder. but nothing terrible.
I got 3.73s The only propblem I had with the 12 bolt is I overfilled it and I think that may have damaged the pinion seal. so now it leaks and leaks. I siliconed the seal and the cover. I will check if its leaking anymore.
I got 3.73s The only propblem I had with the 12 bolt is I overfilled it and I think that may have damaged the pinion seal. so now it leaks and leaks. I siliconed the seal and the cover. I will check if its leaking anymore.
05-31-2007, 12:25 AM
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IMHO 
A strange 12-bolt with tapered axle bearings. It is the lightest of the bunch, except for stock of course. Buy it in pieces and assemble it yourself or have someone competent do it. The Ford 9" with a thru-bolt aluminum center section might hold up to street and SCCA type stuff. Call Moser or Mark Williams etc....
A strange 12-bolt with tapered axle bearings. It is the lightest of the bunch, except for stock of course. Buy it in pieces and assemble it yourself or have someone competent do it. The Ford 9" with a thru-bolt aluminum center section might hold up to street and SCCA type stuff. Call Moser or Mark Williams etc.... 
