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Sure Grip even tho wheels spin opposite directions? #64275 05/26/08 09:39 PM 05/26/08 09:39 PM
Joined: Dec 2004 Posts: 733 Northern Virginia Moparmaniacc OP super stock
Moparmaniacc OP super stock Joined: Dec 2004 Posts: 733 Northern Virginia	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?

Re: Sure Grip even tho wheels spin opposite directions? [Re: Moparmaniacc] #64276 05/26/08 09:45 PM 05/26/08 09:45 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	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. Clean it, if it's Dirty. Oil it, if it Squeaks. But: Don't fix it, if it Works!

Re: Sure Grip even tho wheels spin opposite directions? [Re: Moparmaniacc] #64277 05/26/08 09:48 PM 05/26/08 09:48 PM
A Anonymous Unregistered
Anonymous Unregistered A	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.

Re: Sure Grip even tho wheels spin opposite directions? #64278 05/26/08 09:52 PM 05/26/08 09:52 PM
A Anonymous Unregistered
Anonymous Unregistered A	you never heard of a "poor man's posi"?

Re: Sure Grip even tho wheels spin opposite directions? #64279 05/26/08 10:10 PM 05/26/08 10:10 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: you never heard of a "poor man's posi"? Yeah but they won't spin the wheels one in each direction. Unless you know of one that I don't.

Re: Sure Grip even tho wheels spin opposite directions? [Re: MoparforLife] #64280 05/26/08 10:17 PM 05/26/08 10:17 PM
A Anonymous Unregistered
Anonymous Unregistered A	seen lotsa open diffs that spin tires in opposite directions.

Re: Sure Grip even tho wheels spin opposite directions? #64281 05/27/08 07:52 AM 05/27/08 07:52 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: seen lotsa open diffs that spin tires in opposite directions. They all do as far as I know. Point being he is wondering if he has a ssure grip being he laid 2 strips even if turning the wheels with the car in the air the wheels turned opposite directions. The rest of us are saying that under the right conditions an open rear will lay down 2 strips for a short distance before 1 quits.

Re: Sure Grip even tho wheels spin opposite directions? [Re: MoparforLife] #64282 05/27/08 08:18 AM 05/27/08 08:18 AM
A Anonymous Unregistered
Anonymous Unregistered A	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).

Re: Sure Grip even tho wheels spin opposite directions? #64283 05/27/08 08:42 AM 05/27/08 08:42 AM
Joined: Jan 2003 Posts: 75,059 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,059 U.S.S.A.	Quote: 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). how was it done never heard of that . as far as the wheels turning in opposite directions , if the conetype is spent it's possible , but if you put enough power to it even an open can lay 2 strips , i have done it with a 340 when not taking off exactly straight .

Re: Sure Grip even tho wheels spin opposite directions? [Re: JohnRR] #64284 05/27/08 09:03 AM 05/27/08 09:03 AM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	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? Photobucket sucks

Re: Sure Grip even tho wheels spin opposite directions? [Re: JohnRR] #64285 05/27/08 05:12 PM 05/27/08 05:12 PM
Joined: Nov 2006 Posts: 3,407 S.E. Florida, USA rrunner master
rrunner master Joined: Nov 2006 Posts: 3,407 S.E. Florida, USA	Quote: Quote: 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). how was it done never heard of that .

Re: Sure Grip even tho wheels spin opposite directions? [Re: rrunner] #64286 05/27/08 05:46 PM 05/27/08 05:46 PM
Joined: Nov 2007 Posts: 21,832 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,832 Kirkland, Washington	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.

Re: Sure Grip even tho wheels spin opposite directions? [Re: Pacnorthcuda] #64287 05/27/08 05:58 PM 05/27/08 05:58 PM
Joined: Aug 2003 Posts: 4,384 Madison Wi NTOLERANCE master
NTOLERANCE master Joined: Aug 2003 Posts: 4,384 Madison Wi	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. I used to care but....... things have changed

Re: Sure Grip even tho wheels spin opposite directions? [Re: NTOLERANCE] #64288 05/27/08 06:05 PM 05/27/08 06:05 PM
Joined: Jun 2003 Posts: 4,872 connecticut pnypwr master
pnypwr master Joined: Jun 2003 Posts: 4,872 connecticut	Quote: 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. a locker no a tru trac yes...and gov-locs are in fact junk!!! sounds like hes got a cone grip thats whiped...ive had them do that...jack it up in park or hold the d shaft and see how hard it is to turn...open should real easy a wasted grip a lil harder... "Are you gonna bark all day lil doggy? Or are you gonna bite?" 05 ram 2500 ctd 74 gremlin x 360 65 mustang 347 70 coronet R/T 440 03 Mach 1

Re: Sure Grip even tho wheels spin opposite directions? [Re: Pacnorthcuda] #64289 05/27/08 07:24 PM 05/27/08 07:24 PM
A Anonymous Unregistered
Anonymous Unregistered A	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.

Re: Sure Grip even tho wheels spin opposite directions? #64290 05/28/08 10:38 AM 05/28/08 10:38 AM
Joined: Jan 2003 Posts: 75,059 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,059 U.S.S.A.	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

Re: Sure Grip even tho wheels spin opposite directions? [Re: JohnRR] #64291 05/29/08 12:33 AM 05/29/08 12:33 AM
A Anonymous Unregistered
Anonymous Unregistered A	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.

Re: Sure Grip even tho wheels spin opposite directions? #64292 05/29/08 08:37 AM 05/29/08 08:37 AM
Joined: Jan 2003 Posts: 75,059 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,059 U.S.S.A.	Quote: Quote: Quote: 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 ??? 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. that was a joke

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