Guys, I have found a 10 bolt posi rear end that looks like it came out of a early Nova/Camaro. At this point I do not know the condition or gear ratio. Assuming I tear it apart and it is in "serviceable" condition do you think it is worth the $400 asking price. It looks like it has had many miles put on it, but I would like to get something I can put in my 67 camaro and overhaul at a later date. Basically what I'm asking is, is $400 a reasonable price for a posi which works now but could require a rebuild.

$400 seems a little steep for a 10 bolt that hasn't been rebuilt. There was on for sale here in KY the other day with new 4.11 gears and posi unit for $300. Damn if he sold it the morning b4 I called. What I'm saying is look around. $400 is a decent price for one that's been gone thru recently. There are alot of novas in junk yards. You could probably find a posi 10 bolt in unknown condition for around $200.

One thing I forgot. Find out if it is an 8.2 (Camaro) or 8.5 (Nova) rear. If it is an 8.2, it definitely isn't worth it in my opinion (unless you're going original). They are much weaker.

JM69SS is correct about finding out if it's an 8.2 or 8.5.

You should be able to tell by looking at the housing from the rear. If it's completely round, it's an 8.2. If it has two little square shaped "humps" on the lower part of the housing, it's an 8.5. The other way to tell is to remove the cover and look at either the ring gear bolts, or the bolt that holds the spider gear pin in the carrier. If the ring gear bolts require a 3/4" wrench and the pin bolt requires a 5/16" wrench, it's an 8.5. Otherwise it's an 8.2.

If it's an 8.2, let it go. Don't buy it.

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70 & 1/2 RS
SB406 & M20 4spd
9" rear

70 Malibu 350/TH400

Gold member #103
Driveline Technician

Thanks for the info. I totally forgot to check and see if it was 8.2 or 8.5 and I didn't know how until now. One more question, did anyone make a 8.5 posi which would be a direct swap for a 67. I thought all the 67-9 Camaros came with 8.2s. Does this mean the only direct swap would be a 12 bolt from 1st gen Camaro or early Nova.

8.2 rear ends were made from '65 to '71.The 8.5 replaced it in '72. So all first gen camaros had the 8.2 10 bolt or the 12 bolt. Eaton has just made a new posi for the 8.2 and the 8.5. The 8.2 will handle some abuse. Look at how the 7.5s handle the LT1s and LS1s, even with the 6 speeds.

Hi,
Has anybody used the new Eaton posi for the 8.2 and 8.5 that Big Gear Head stated above.

I have a 10 bolt 3.08 open looking to convert to posi & 3.73 gears ...any idea of cost
and having it setup ???

Trying to stay within my budget...12 Bolt gets into some $$$

$400 is way too much for a 10 bolt unless its a posi w/ 4.11's,in my opinion.
as for the posi unit why not try a locker( cheaper than a alburn)or try to find a 9" ....i just got a 8 3/4 "a-body" rear with sure grip and 4.10's...a direct bolt in(just gotta get the studs drilled out to a chevy pattern.$400.(said to handal up to 600hp in stock form...hemi motor.

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[URL=http://hometown.aol.com/dagwould1/auto]

Doug G.
68 Camaro
406 ci.

Put an auburn cone style posi carrier, new carrier bearings, new axle bearings, new seals (except pinion), and rep[laced one axle in my 78 8.5" and invested alittle over $400. Plus I did the work myself. I would guess at least $200 for labor if I had someone else do the work.

PS I believe lockers are less expensive but do not work as well for street driving. They do not allow the wheels to rotate at slightly different speeds when turning.

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68SS ZZ4, 4sp T-10, 12 bolt, getting painted

78Z28, 330hp vortec, TH350, 10 bolt (just finished)

john69ss- I sell the new eaton units for around $360. Theye are built like the old eatons used in all 12 bolt posi rears. The only difference is the new lining on the clutch discs. Much better than auburn in my opinion, plus, you can rebuild them if they wear out.

[This message has been edited by big gear head (edited 02-23-2000).]

Don't forget that the 71-74 Nova's came with 8.5 inch rearends and will bolt into an early Camaro. It's unlikely you will find one with a posi but is fairly easy to find a posi carrier (think T/A) and gears (van or pickup)with a little scrounging. Just take the parts you need off of each rearend. If you got lucky you might find it all in one yard. At the pick and pulls they are cheap, last month I found a second generation 3.42 posi, complete drum to drum for $50.

Steve R.

big gear head,

I understand the only reason that a late model LS1 doesn't obliterate the 7.6 inch rear end is that the cars don't get good traction off the line, so the drivetrain isn't having to absorb the shock of the pent up torque. Does anybody seriously race with these rear ends??

I keep forgetting the '72 up nova rears. About the 7.5/7.6-I've built some that are holding up pretty good with 9" slicks behind 350 autos. Stick cars are hard on rears with or without traction. Then I've seen 12 bolts break with street tires.

I'm with Big Gear Head on this. Last year at the dragway I watched a 97 Ram Air Trans Am stock except for a supercharger running low 12's and spanking all the late model Mustangs with exhausts, chips, pulleys, intakes, etc. It was funny because my friend and I went there with a couple of the Mustang people and we were laughing at them losing to the TA. Anyway the TA is a regular there and the rear is stock. It can take some abuse. Granted the car is pretty new so who knows how long it will last however