anthony714

ok call me a goof for wanting to stick with a stock housing,,ive asked about the 10 bolts earlier,how strong would a 9 bolt be?and who sells parts for these????will a 9 bolt take 400-500 hp if fully built???is it a better housing or just guts???please im dieing here

87DJP2001

If you are going to have that much power (IF) any rear is going to be a crap shoot.

Z28Nut

You're talking about the Ford 9" third member design? Very tough if built right. A 12-bolt by Currie, Strange, Moser, DTS, etc. will be pretty tough, too. Can also keep ABS brakes with no prob on 12-bolts, 9" rears need a reluctor to be fabbed up to get ABS to work with them.

anthony714

no im talking about the borg warner 9 bolt rears found in some 3rd gens...i have a 3rd gen so no need for abs.i realize 9 inch fords can be built to handle 1000 plus hp

NastyTA

No, 9 bolt. It's the Australian rear by Borg Warner found in the thirdgen's. Supposedly stronger than the 10 bolt. No c-clips, it has backing plates. Larger spider gears too. Ratios are 2.77 most common, 3.27 and 3.70 which is fairly rare. Not many companies are making parts and they are expensive. Strange Engineering is making aftermarket gear sets for them. Do some research on thirdgen.org

Z28Nut

Ah, my bad. Been trying to decide between 9" and 12-bolt. I have heard (not much) about the Borg Warner 9-bolt but it didn't click. Do they have bigger ring gear dia.? From Nasty TA's description, it sounds like it might be tougher than the 10-bolt.

NastyTA

stronger than 10 bolt, but still not enough for a good amount of power. I know I'll be breaking mine soon. Had the motor on the dyno today and it made 447 at the flywheel before tuning. Looking for 475 tomorrow.

87DJP2001

The BW 9-bolt was last installed in 3rd gen cars in 1989.
A performance rear with a 7.750 dia ring gear, no "C" clips on the 28 spline axle shafts, Cone type limited slip and larger side pinions & spider gears. Was available stock in 2:77, 3:27 & 3:45 with very few parts available on the aftermarket. None at GM Dealers. A stonger rear then the stock 10-bolt, however it was NEVER designed for more then 300 Hp and Drag Strip launches. Remenber this was the Eighties.