The rear-end is a 9 bolt with disk brakes and includes the prop valve.Its out of an 86 T/A. Not sure gear ratio but its only $200. Im thinking of putting it in my 84 camaro now with a 350 in it. Originally my camaro came with a 305 like the T/A but I have a 10 bolt rear with drum brakes. Would it be any better than the one I have now or should I even bother with it?

[This message has been edited by RayZeR14u (edited July 24, 2001).]

 

Id stick with your rear end....that 9 bolt is an austrailian rear and parts are a lot pricer.... Its only a little stronger but not worth it. I think you would have to change your proportioning valve on your brakes to run the disc rear also...

 

The nine bolt is considered a superior rearend and should have 3.23 gears and a posi in it. Not a bad deal. GM are famous for breaking stuff in the rearends so it does not hurt to have a spare lying around.

 

The main problem I found with the 9-bolt is that I couldn't find any high performance posi unit for them. I found some people that make the gears but no posi's. If its a disc brake rear end you want Third Gen Resource has a crap load of them and if you expecting more horsepower in the future or have a lot now, the 10 bolt is easy to find parts for and is very common. I would stick with the 10-bolt....I've been doing 11.20's on mine for a while and haven't had a problem yet.........Hope I didn't just screw myself.

 

Thanks for the input guys. After reading your posts and a couple nights to think about, it I think I'll pass. Heard that the rear disks weren't all that in 86 anyway. Peace

 

i broke my 9-bolt 3.45 geared disc brake rear, good thing i had an extra 10-bolt drum with richmond 3.73`s and the master cyl and prop valve, just had to buy parking brake cables and i was back in business, btw i broke the teeth off the pinion gear, and as far as i can tell this is the only problem i have seen occur with the 9-bolt.



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87 IROC-z 305 TPI 5spd 10-bolt 3.73 posi ,8.8 Accel wires , bosch platinum +4 plugs,gutted air box ram air, K&N air filters,TB coolant bypass ,polyurethane tranny and torque arm mounts, K&N oil filter,Mobil 1 synthetic oil 10w30, futura GLS super sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims ,

400 sbc and a 6 spd in the works

 

Are you running those times on a manual or auto trans?

 

9 bolt rear ends do not come with 323 gears thats 4 the 10 bolt
i have two 9bolts one has 327 the other has 277 i got my 10
bolt with 323 gears from a 92 z with 30,000 miles for 400 bucks