Is This a "Locking" or "Non-Locking" Posi? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-30-2011, 12:06 PM
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Is This a "Locking" or "Non-Locking" Posi?

GM 7.5" 10 Bolt 28 Spline 3 Series EATON Posi Unit.

Unit was in a 2002 S-10 Blazer.

"They call it a limited slip. It will release on turns where only one gets the power and then on straight it will use both wheels."


I want to put this (hopefully it is a non-locking) in a 1980 Monte Carlo donor diffy (upgrading to 28 spline axles, of course) with 3.42 gears - strictly as a street cruiser.

Thanx in advance for your help!!

Tom

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Old 12-30-2011, 02:46 PM
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its a clutch type posi, which would be a non-locking

will you have to buy those 28 spline upgrade axles?


whats it going into?
how much power is it going to have going to it?
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Old 12-31-2011, 12:29 AM
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80 Monte 7.5" came with 26-spline.
28-Spline 8.5" Axles from a 84-87 Buick GN/T-Type or Olds HO/442 will fit.
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Old 12-31-2011, 04:40 PM
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If its an Eaton, then its a GovLock.
It will have 2 shafts with wieghts that swing out based on RPM.

Its an OK unit for street use but does not tolerate abuse.

The 28 spline axle in a 8.5 axle has a different button thickness than a 28 spline 7.5. You can grind the axle down to the same dimension as your 26 spline axles.
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