Posted By: Moparmaniacc
Sure Grip even tho wheels spin opposite directions? - 05/27/08 01:39 AM
I had always assumed the pumpkin in my 8 3/4" rear (489 type)was not a sure grip cuz the wheels spun in opposite directions when the rear was jacked up. Now that I have the 440 running decent enough, I was pleased to see tonight that I was leaving two strips down
Can someone set me straight?
Posted By: MoparforLife
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 01:45 AM
If the wheels turn opposite directions when you turn them in the air it is open. The traction was such that both wheels broke loose for a while but I would lay odds that one quit before the other or would have if you would have stayed in it long enough.
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 01:48 AM
If you can turn one rear wheel by hand, with the car in gear, or if the wheels turn opposite, you do NOT have a sure grip, or else it's pretty "broke." I spose it's possible that the clutches could be so worn that you could turn one, but I've never seen one that bad.
You might just be lucky---you might have a car with just the right transfer and tires to hook up with both tires.
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 01:52 AM
you never heard of a "poor man's posi"?
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 02:17 AM
seen lotsa open diffs that spin tires in opposite directions.
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 12:18 PM
yah i understand what the rest of you is saying. and yes even a cooked suregrip will still move
both tires in the same direction. the "poor man posi" thing is a trick back in the day to
make a open diff act like a suregrip (nothing to do with welding the spider gears).
Posted By: 70Cuda383
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 01:03 PM
my V6 dakota would put down 2 even patches and it was an open diff.
I had to do a 4000 rpm clutch drop to get both spinning though. if I went around a corner or was just driving normally on wet roads, only 1 would spin.
what is this poor mans posi you speak of?
Posted By: Pacnorthcuda
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 09:46 PM
I think there talking about the old trick of shimming the side gears into the spiders on an open diff. It would create enough bind to actually mimic a sure-grip to a degree. Would also wear very fast.
Posted By: NTOLERANCE
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 09:58 PM
FWIW, a GM Corporate "Gov-Loc" will spin the wheels in the opposite direction when raised, but will lock up at a certain RPM.
Doesnt help this siutation though does it?
Will a detroit locker spin in the opposite direction when raised? I understand those are available now for an 8.75 rear.
Gov-Locs are junk.
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/27/08 11:24 PM
Quote:
I think there talking about the old trick of shimming the side gears into the spiders on an open diff. It would create enough bind to actually mimic a sure-grip to a degree. Would also wear very fast.
actually, its preloading the pass rear with a air shock. nice trick, works well.
Posted By: Anonymous
Re: Sure Grip even tho wheels spin opposite directions? - 05/29/08 04:33 AM
Quote:
Quote:
Quote:
I think there talking about the old trick of shimming the side gears into the spiders on an open diff. It would create enough bind to actually mimic a sure-grip to a degree. Would also wear very fast.
actually, its preloading the pass rear with a air shock. nice trick, works well.
how do you get an air shock inside the diff housing ???
oh , no luck on that coupler
in the diff? how'd you come up with that? anyways, airshock to replace the stock shock on the pass side.
pump her up and its done. coupler.. no biggie.
Unless you know of one that I don't.
