this posi unit should work right?
07-29-2005, 12:18 PM
#1
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Join Date: Dec 2003
Location: Ft. Lauderdale, FL
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Car: 1988 Black Firebird
Engine: Chevy 350ci
Transmission: 700 R4
this posi unit should work right?
thanks to ede and likeenz24 i've been figurin this stuff out. I found this guy sellin a "factory GM 26 spline 3 seris GOV-LOC posi unit to fit all popular 7.5 26 spline "c" clip style rear ends". It also says it fits 82-88 firebirds and accepts factory gear ratios from 3.23 to 4.11.
Now to my knowledge my firebird is an 1988 26-spline 7.5" factory open 3.42 diff and i wanted to check with you guys before goin through w/ the purchase. thanks,
-drew
Now to my knowledge my firebird is an 1988 26-spline 7.5" factory open 3.42 diff and i wanted to check with you guys before goin through w/ the purchase. thanks,
-drew
07-31-2005, 05:11 PM
#3
Member
Stay away from the gov-lok it is a time bomb do further research.............
08-02-2005, 07:18 PM
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Car: 1988 Black Firebird
Engine: Chevy 350ci
Transmission: 700 R4
gov-locs a time bomb? i haven't bought it yet so that's good to know, thanks. what's it do when it messes up?
08-02-2005, 09:43 PM
#5
Member
Originally posted by RB83L69
It's probably out of a S truck, although a few of them found their way into these cars in the early years of their existence. That's the dreaded useless POS known as the Eaton Grenade-Lock (Gov-Lock according to its mfr).
It acts like an open diff, i.e. no clutching action whatsoever, until the difference between the RPMs of the 2 axles exceeds about 100 RPM. At that point it attempts to lock up. Which means, no posi action whatsoever from a stop.
Obviously, quite good for a 4WD type situation, in mud or something, where there's no traction; but a VERY VERY BAD design for pavement. It WILL turn itself to shrapnel if used in a high-power application on asphalt or concrete. Even a 6-cyl like the ones in S trucks will grenade them easily.
DO NOT buy it thinking it's going to give you better traction off the line.
It's probably out of a S truck, although a few of them found their way into these cars in the early years of their existence. That's the dreaded useless POS known as the Eaton Grenade-Lock (Gov-Lock according to its mfr).
It acts like an open diff, i.e. no clutching action whatsoever, until the difference between the RPMs of the 2 axles exceeds about 100 RPM. At that point it attempts to lock up. Which means, no posi action whatsoever from a stop.
Obviously, quite good for a 4WD type situation, in mud or something, where there's no traction; but a VERY VERY BAD design for pavement. It WILL turn itself to shrapnel if used in a high-power application on asphalt or concrete. Even a 6-cyl like the ones in S trucks will grenade them easily.
DO NOT buy it thinking it's going to give you better traction off the line.
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