HI!... GLASSWAVE : What I've always done to check my posie's are to jack the rear of the truck up and put it on jack stands. Put the tranny in neutral. Get a buddy to hold one sides tire as hard as he/she can. Then you grap the opposite tire and try to turn it. If you can turn it very easily and the other tire does'nt try to turn at all, then you either don't actually have posi (open differencal) or your factory posi is #%$&ed up. If you are fithing your buddy to try to turn the tire and can only move it the same amouny he/she can move theirs, then your posi is fine. You might just also have to add a bit more friction modifier to the rearend oil. Hope this helps you out.

------------------
NEAL " THE H.P FREAK" E-MAIL :nnewman@sympatico.ca
'99' F-150 XLT SPORT, oxford white, reg cab shortbox stepside,5.4, auto, 4.10L.S, captain's chairs, bedliner, GTS carbon fiber headlight covers, ***** CEPECK clear halogen driving lights, GTS slotted tailight covers (painted oxford white), fiberglass smooth wiper cowl (painted OXFORD WHITE), FORD locking lug nuts, tinted windows,true duel exhaust with 2.5 inch mandrel bent pipes and FLOWMASTER 3 chamber mufflers with 3' tailpipes exiting before the rear wheel like the LIGHTNING, HELLWIG rear stabalizer bar, 3 AUTOMETER guage pods, filled with tranny temp, engine temp, and oil preasure AUTOMETER "PHANTOM" guages,custom fabricated air intake trac and huge K/N filter, TPS mod, BELLTECH 2-inch rear drop, custom programed SUPERCHIP "FLIP-CHIP", BAUMANN ENGINEERING shift kit (on stage 5 setting)BYPASS CLUTCH CONTROL VALVE/PREASURE REGULATOR VALVE, ASP POWER PULLEYS, custom tig welded and ported JBA "JET BLACK coated headers, twin DERALE 16 INCH ELECTRIC FANS, PERMA COOL 14"/10" tranny cooler with 10" electric fan, custom ported (STOCK) throttle body, custom digital air intake temp sensor, custom ported TB intake elbow, relocated ATS, FORD RACING 24LB injectors, RUSSELL stainless steel braided tranny lines with fittings.


FUTURE MODS : BBK 75MM THROTTLE BODY, 80MM PRO-M MASS AIR METER, AADI F1 RAM AIR HOOD WITH CUSTOM FABRICATED RAM AIR SET-UP, CAL-TRAC TRACTION BARS, EXTRUDE HONED INTAKE MANIFOLD, SHM CUSTOM FUEL RAILS, 90/10 FRONT CE SHOCKS, 70/30 REAR CE SHOCKS, BELL TECH 2/4 DROP, EXPEDITION CENTER CONSOLE, HARLEY DAVISON F-150 LOWER FRONT VALANCE (painted oxford white) and a KENNE BELL BLOWZILLA SUPERCHARGER.

ESTIMATED H.P TO DATE : 340H.P / 425ft/lbs of torque.

CURRENT PERFORMANCE : 1/4 MILE - 14.53E.T * MPH - 93.00 * 0-60MPH - 5.8 * 1/8 MILE - 9.2 * 60 FT - 2.0

OTHER TOYS : "83" PRO STREET FORD RANGER : 351-w stroked to 408c.i 625H.P (natural), 875H.P with 250H.P "BIG SHOT" N.O.S kit, tubbed (crome moly tubing), 12 point chrome moly roll cage, 4-link with coil overs, MUSTANG II front suspension, c-4 tranny (race prepped), 4000rpm stall converter(8 INCH), 3" chrome moly driveshaft,AUTOMETER guages, 16.50 MICKEY THOMPSON rear tires, 4" M/T front tires, CENTERLINE CON-VO PRO rims, fiberglass hood - bumper - prostock hood scoop, wishbone trac-link, two chrome moly driveshaft loops, 16 gallon JAZ fuel cell,etc

 

Another way is to jack up one rear wheel and apply torque wrench to one of the nuts of the lifted wheel. You should have 50 lbs of torque or more on average

 

I have a 2000 with LS. On slippery snow I seem to be able to get my limited slip to catch about 50% of the time. Pushing on or feathering the brakes or park brake only helps occasionally.

Does this mean my LS is having problems? Is there a more reliable way to test this?

Thanks,
Neal
Salt Lake UT

F-150 XLT Super Cab Long Bed, 4x4, 4.6L, Auto, 3.55 LS

[This message has been edited by glasswave (edited 03-26-2001).]

 

The easiest and most fun way is to power bra