Blew up my Monza posi 7.5 - suggestions please

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Blew up my Monza posi 7.5 - suggestions please

Postby 71GTKammback » Wed Jul 26, 2017 9:12 pm

Blew up the stock monza 7.5 2:29 posi unit in my town coupe. The ring and pinion look okay from what i can see. I have a non posi rear end 7.5 2:29 that is in good shape. What are my options these days? I do not have the skills to do it myself. Wondering if there are eaton style posi units available for 2:29 gears.
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Re: Blew up my Monza posi 7.5 - suggestions please

Postby 71GTKammback » Wed Jul 26, 2017 9:14 pm

Here is a pic
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71GTKammback
 
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Re: Blew up my Monza posi 7.5 - suggestions please

Postby HI WINDING MONZA » Fri Jul 28, 2017 7:29 pm

I ran a mini spool in my stock 2.73 open carrier super hard for 23 years and only twisted the splines on one stock axle slightly once.

That included drag and street racing, flat towing, slicks, a 144 HP Pontiac151 with a 4 speed with a 7200 rpm limit and a 350 hp 425 Cadillac with a full manual Turbo 350.

That also included 3.42 and 4.56 gears at other times . Its only annoying around turns, lol :D

Pretty good for less than $100 . :th:

Doug in P.R. 8)
My Old Cadillac Powered Monza Still Lives...........now on its 5th owner!..........Somewhere ?

The 90's just keep rollin' along........
1990 Chevrolet Silverado Regular Cab Long Bed 350 TBI V8 700R4 108k miles
1992 Pontiac Sunbird Coupe 2.0 OHC MPFI I4 TH125C 148k miles
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Re: Blew up my Monza posi 7.5 - suggestions please

Postby 71GTKammback » Tue Mar 13, 2018 12:41 am

Ended up putting an Auburn Posi unit in the Monza. Works perfectly with zero noise or chatter when going around corners. Cost some bucks but it even has a warranty now...
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