Author Topic: no more posi  (Read 1173 times)

Offline 75 C20

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no more posi
« on: March 06, 2008, 07:00:52 PM »
my 79 ever since i got it always pulled posi when i power braked it. here lately it hasnt been doing that all the time and now its almost always a single track. is there anyway i could shim/rebuild it so it would do posi again with out buying a whole new posi track? its a 14 bolt i dont know the gear ratio, 10.5 inch full floater. 
1975 Custom Deluxe 20 350 SM465 2WD Longbed
1979 Custom Deluxe 20 400 SM465 2WD Longbed
1968 Custom Sport Truck 20 327 TH400 2WD Longbed
1985 Silverado 10 305 700R4 2WD Longbed
1969 Pontiac GTO 400 Turbo350
2008 GMC 2500HD 6.0 6spd 4X4 Longbed

Offline VileZambonie

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Re: no more posi
« Reply #1 on: March 06, 2008, 07:43:12 PM »
What kind of posi unit do you have? If it's a clutch type it's rebuildable.
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Offline 75 C20

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Re: no more posi
« Reply #2 on: March 06, 2008, 08:28:50 PM »
tell you the truth i got no idea- id say its factory but i dont have a sticker to prove it- but i can't imagine the old guy i bought it from puting a posi trac in it :D
1975 Custom Deluxe 20 350 SM465 2WD Longbed
1979 Custom Deluxe 20 400 SM465 2WD Longbed
1968 Custom Sport Truck 20 327 TH400 2WD Longbed
1985 Silverado 10 305 700R4 2WD Longbed
1969 Pontiac GTO 400 Turbo350
2008 GMC 2500HD 6.0 6spd 4X4 Longbed

Offline VileZambonie

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Re: no more posi
« Reply #3 on: March 06, 2008, 08:30:24 PM »
If you put it in Neutral and jack up one tire can you spin it with say 150lb-ft torque?
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

Offline 75 C20

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Re: no more posi
« Reply #4 on: March 06, 2008, 08:47:08 PM »
ill check that tom. if i can still c it- were suppos to get up to 10 inches of snow :P
1975 Custom Deluxe 20 350 SM465 2WD Longbed
1979 Custom Deluxe 20 400 SM465 2WD Longbed
1968 Custom Sport Truck 20 327 TH400 2WD Longbed
1985 Silverado 10 305 700R4 2WD Longbed
1969 Pontiac GTO 400 Turbo350
2008 GMC 2500HD 6.0 6spd 4X4 Longbed