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Old 11-22-2009, 04:43 PM
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10 bolt chevy rear end

Hello guys, I am in need of some advice on a rear end.

I am in the process of junking out a car, and I am wondering if I could keep the 10-bolt and use it in a hi-performance application.

If nothing else, I would like to play with it for a bit and test my hand at narrowing one of these. I am no stranger to setting up gear boxes, and I will admit that my experience on rear end set-ups is not all that deep. I have set up rear end gear changes in the past, and I have had no issues (other than wasting a couple compression sleeves by over torquing).

Can I turn this 10 bolter into something narrowed, and geared to about 4.56.... chuck in a spool, and have it live?

I am thinking about 430 hp sbc with decent slicks.

anyone?

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Old 11-22-2009, 05:35 PM
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Is it an 8.2,8.5 or a 7.5?My favorite is the 8.5 and yes,if set up properly it will take alot of abuse.An 8.2 is not as strong of course but will take some abuse.I personally wouldn't give a plug nickle for a 7.5 Just my humble P.S. if you're going to try narrowing it I would recommend putting ford ends on it for the press on bearing feature so if you break some internals,you wouldn't lose an axle as I've done You're going to need shortened axles anyway,so you can specify that they have the Ford axle retainers.

Last edited by TroyBoy; 11-22-2009 at 05:58 PM.
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Old 11-22-2009, 05:45 PM
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Yea, it makes a big difference which 10 bolt rear end you are talking about. I agree that the 8.5 is a good rear end and the 8.2 is weaker. The 7.5 is an economy car rear end and shouldn't be used in a high performance car. I don't now why GM used it in so many F cars. This ruined the f cars in my opinion. They had good power, but couldn't get it to the ground because if weak rear ends. The Mustang had the 8.8, which is very much like the 12 bolt.
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Old 11-22-2009, 05:57 PM
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Quote:
Originally Posted by big gear head
Yea, it makes a big difference which 10 bolt rear end you are talking about. I agree that the 8.5 is a good rear end and the 8.2 is weaker. The 7.5 is an economy car rear end and shouldn't be used in a high performance car. I don't now why GM used it in so many F cars. This ruined the f cars in my opinion. They had good power, but couldn't get it to the ground because if weak rear ends. The Mustang had the 8.8, which is very much like the 12 bolt.
I agree
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Old 11-23-2009, 09:33 AM
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The 8.5" in my 72 Nova has put up with 525 hp for 11+years, 350+ 1/4 mile strip runs on top of street use and is totally stock, GM Eaton posi from a 75 Firebird, 28 spline axles, with the exception of Richmond 4.56 gears. Car is all steel 3600lbs with driver and ran in the mid 11.40 zone with 1.6 second 60' times pulling air under the front tires. It is currently getting an upgrade to 30 spline axles and spool, c-clip eliminators, and the tubes welded solid to the center case and I don't expect any problems at 700 hp.

I personally wouldn't bother with the 8.2" unless it was already in the car and I couldn't afford to get a better rear. I wouldn't use the 7.5" in a go kart without expecting to blow it up, and certainly wouldn't spend a dime on it.
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Old 11-29-2009, 07:18 AM
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Been reading your engine posts.Now I know what your hoping to put it in.BUT.......Which one do you have.I'm curious
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Old 11-29-2009, 07:38 AM
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Well, I am not sure, and I have no way to tell... at least not any way now as I sold the vehicle yesterday.

I was considering using the rear end, and the motor and scraping the rest, but one of the guys at work said he would like to buy it.

I told him to show me the money, and he did. The rest is history.

I believe I will look around for a 12 bold now.
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Old 11-30-2009, 06:35 AM
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Wish you luck with that.I've been researching the Ford 8.8 and they have many of the same strengths as a 12 bolt.They are way easier to find,lol.It's almost as if Ford wanted its own version of a 12 bolt.You can find them under many vehicles-mustangs,explorers,mountaineers,pick-ups,etc. for cheap.
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Old 12-01-2009, 07:01 PM
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yeah which 10 bolt we talking here??

year?

model??
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Old 12-01-2009, 07:18 PM
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Quote:
Originally Posted by fast68
yeah which 10 bolt we talking here??

year?

model??
Don't matter,he already got rid of it.
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