07-29-2007, 06:35 AM
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CC Member
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Join Date: Mar 2001
Location: E BRUNSWICK N.J. USA,
Posts: 3,841
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Not Ranked
depends on the driver and HP or Tork applied
Bulletbrown, If a rear is setup to the CORRECT specs, with heavyduty axles, a rear support cover for the carrier caps to stay in location, NO SLICKS It should last 10-20K mile under all driving conditions. IF YOU ARE AN ANIMAL, it could last 3 burnouts. Wheel hop breaks rears faster that 500hp behind a 300 hp rated rearend. I don't have alot of info on BMW or Toyo rears, but the tork and HP rating, guessing would be in the 400HP and 400ft of tork. Jag rear is a 450/450 rated rear. I have upgraded it to 600/600 with cover,30 spline chromemoly shafts, harden spiders in the diff. A 8.8 rear with upgrades is good for 750/750 with the same upgrades. If drag racing with slicks, the rear would need a check after 25 runs for damage and backlash. You need to KEEP the back lash readings, Once out of spec, either rebuild or re adjust lash. You can put 1k hp behind any rearend, auto trans will soften the tork to the rear, a good clutch driver can do the same. It is about how hard you are on the car. With a BBF I would go with a 9" ford rear heavy duty with larger bearings and heavyduty pinion support housing. If you are going to be easy on the car the 8.8 with upgrades would be just fine and cheaper. Rick L.
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