POSITRAC REAR END ? - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 01-06-2012, 01:50 PM Thread Starter
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Question POSITRAC REAR END ?

my 1997 cclwb 4x4 spins a rear wheel when the road is wet or muddy which leads me to believe that I've got no positrac. Is the best approach swapping the entire rear end or fixing the original unit? Any idea of costs for these 2 options? BTW it is very embarasing to be on an uphill paved street during a hard rain and have to stop, get out and lock hubs to be able to get up the hill. This truck gives the impression of being able to climb trees but it spins out on one wheel with ease. any input is MAVW (most appreciated and very welcomed)

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post #2 of 20 Old 01-06-2012, 01:53 PM
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Put some better tires on it.

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

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post #3 of 20 Old 01-06-2012, 01:53 PM
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Find a ls carrier out of a 87-2011 truck and swap it in and reshim it

97 f350single cab auto
4:10 axles spooled front axle
3in down pipe to stack
Intake 6637
140v idm mod
Efuel all built In house
II s475 .90 turbine spool....
Irate T4 304ss up pipes
T500 with gen3 pump
450/400s hush power
Comp built Trans 2100 stall converter
Gearhead tunes

531/1080 on 250/200s

www.73performance.com

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post #4 of 20 Old 01-06-2012, 01:59 PM Thread Starter
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Smile WOW !you make speedy gonzales look slow!

tires are BFG all terrains. not sure what the IF carrier is but I'm thinking it might be the satellite gears?

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post #5 of 20 Old 01-06-2012, 02:03 PM
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How much air in em? Those suck on wet anything.

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #6 of 20 Old 01-06-2012, 02:09 PM Thread Starter
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I have tried running them between 45 to 65 lbs and its the same regardless of pressure. my thought was that at a lower psi more traction but this doesn't seem to be true. at lower psi tires seem to wear out more on the edges. I did notice that the rear end has red silicone showing which makes me think that it was worked on before I got it.

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post #7 of 20 Old 01-06-2012, 02:16 PM Thread Starter
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sorry guys, but I gotta go. in the process of moving a 5000 lb pony tail palm and just got word that my presence is urgently required. will get back to you later. many thanks!

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post #8 of 20 Old 01-06-2012, 07:40 PM Thread Starter
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I'M BACK. still wondering about the if carrier. any thoughts on ball park prices for options mentioned above?

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post #9 of 20 Old 01-07-2012, 05:30 AM
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LS limited slip. Goto a pick and pull yard and find a truck w 4.10 gears and pull the carrier and the shims that went with it

97 f350single cab auto
4:10 axles spooled front axle
3in down pipe to stack
Intake 6637
140v idm mod
Efuel all built In house
II s475 .90 turbine spool....
Irate T4 304ss up pipes
T500 with gen3 pump
450/400s hush power
Comp built Trans 2100 stall converter
Gearhead tunes

531/1080 on 250/200s

www.73performance.com

Sales@73performance.com
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post #10 of 20 Old 01-07-2012, 06:52 AM
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go buy an aftermarket limited slip unit the stock unit is not worth messing with

1992 F250 4x4 260K 7.3 IDI hypertech turbo SOLD
1997 F250 cc 4x4 now with a 96 psd, zf5 diy air filter & tw 6 pos, Dana 60 comingsoon 1995 f350 cc 295k 7.3 zf42 the doner for my 97 Donated & dismantled
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