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Did I find a SURE GRIP ??? #117395 09/08/08 05:29 PM 09/08/08 05:29 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	I don't know my gears. Is this a sure grip 4672353-Picture536.jpg (240 downloads) Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117396 09/08/08 05:35 PM 09/08/08 05:35 PM
Joined: Jan 2003 Posts: 21,079 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,079 Niles , Ohio	YES.Rocky Chrysler Firepower

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117397 09/08/08 05:45 PM 09/08/08 05:45 PM
Joined: Nov 2007 Posts: 21,835 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,835 Kirkland, Washington	yes...good one--a power lock. Clutch type

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117398 09/08/08 05:52 PM 09/08/08 05:52 PM
Joined: Jan 2003 Posts: 666 Anywhere the British Secret Se... M Moonraker mopar
Moonraker mopar M Joined: Jan 2003 Posts: 666 Anywhere the British Secret Se...	Yep clutch type sure grip. Gear ratio should be stamped on the outside edge of ring gear

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117399 09/08/08 07:41 PM 09/08/08 07:41 PM
Joined: Jul 2006 Posts: 1,475 Ontario, Canada 7 78D150CLUB My avatar is a self portrait!!
78D150CLUB My avatar is a self portrait!! 7 Joined: Jul 2006 Posts: 1,475 Ontario, Canada	Looks like everyone is lucky these days. I needed an axle for the truck just before Moparfest. Got what was supposed to be a 3.23 open for $150 complete. Bad news, a 3.55, same as I have now. Good news, a clutch type sure grip. Nice find, Jeff. I want to die like my Grampa, peacefully, in his sleep. Not screaming in terror like his passengers.

Re: Did I find a SURE GRIP ??? [Re: 78D150CLUB] #117400 09/08/08 08:14 PM 09/08/08 08:14 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	Sounds like I made out OK. Hundred bucks for the gears and hundred bucks for the rear end to put it in. Have not looked yet, easy enough to take the rear end apart to switch out the pumpkin ?? Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117401 09/08/08 08:38 PM 09/08/08 08:38 PM
Joined: Jul 2006 Posts: 1,475 Ontario, Canada 7 78D150CLUB My avatar is a self portrait!!
78D150CLUB My avatar is a self portrait!! 7 Joined: Jul 2006 Posts: 1,475 Ontario, Canada	Unbolt retainers and pull axles, then pull the center saction. This may help ID what center you have. http://www.bionicdodge.com/Download/Mopar_8_3_4_Rear_End_Guide.PDF I want to die like my Grampa, peacefully, in his sleep. Not screaming in terror like his passengers.

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117402 09/08/08 09:15 PM 09/08/08 09:15 PM
Joined: Mar 2008 Posts: 571 Western NC 68Bullit mopar
68Bullit mopar Joined: Mar 2008 Posts: 571 Western NC	Quote: Sounds like I made out OK. Hundred bucks for the gears and hundred bucks for the rear end to put it in. Have not looked yet, easy enough to take the rear end apart to switch out the pumpkin ?? Yeah You actually made out very good. I'm gonna take a stab and say you have 3.91's, not sure why, but they just look like 3.91's. Look at the bottom of the case just before the yoke and see what the last three numbers are. If it's a 741 case, and they are in-fact 3.91's, then they'll probably howl some, cos' most do. They are generally fine, they are just known to howl. Last edited by 68Bullit; 09/08/08 09:16 PM.

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117403 09/09/08 08:43 AM 09/09/08 08:43 AM
Joined: Jan 2003 Posts: 75,070 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,070 U.S.S.A.	Quote: Sounds like I made out OK. Hundred bucks for the gears and hundred bucks for the rear end to put it in. Have not looked yet, easy enough to take the rear end apart to switch out the pumpkin ?? You paid a hundred for the sure grip , the gears themself , the ring gear anyway , looks pretty rusty to me .

Re: Did I find a SURE GRIP ??? [Re: JohnRR] #117404 09/09/08 09:26 AM 09/09/08 09:26 AM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	My '64Dog came stock with a 741 and 3.91s and it did not have any noticeable rear end gear noise. Now are there transmission noises from the SM420, yep. R.

Re: Did I find a SURE GRIP ??? [Re: 68Bullit] #117405 09/09/08 07:43 PM 09/09/08 07:43 PM
Joined: Jan 2003 Posts: 4,150 lewiston, ID C cornucopia
cornucopia C Joined: Jan 2003 Posts: 4,150 lewiston, ID	Quote: Quote: Sounds like I made out OK. Hundred bucks for the gears and hundred bucks for the rear end to put it in. Have not looked yet, easy enough to take the rear end apart to switch out the pumpkin ?? Yeah You actually made out very good. I'm gonna take a stab and say you have 3.91's, not sure why, but they just look like 3.91's. Look at the bottom of the case just before the yoke and see what the last three numbers are. If it's a 741 case, and they are in-fact 3.91's, then they'll probably howl some, cos' most do. They are generally fine, they are just known to howl. from the thickness of that ring gear, I'm gonna say 2.94 or maybe 3.23.

Re: Did I find a SURE GRIP ??? [Re: cornucopia] #117406 09/09/08 08:49 PM 09/09/08 08:49 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	You guys rock, thanks, the guy said it was a 3:23 open set. I will check out casting numbers and turn the gears to see if the ratio is stamped on the ring gear. Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117407 09/09/08 09:00 PM 09/09/08 09:00 PM
Joined: Mar 2005 Posts: 1,373 Rancho Cucamonga, CA D_C pro stock
D_C pro stock Joined: Mar 2005 Posts: 1,373 Rancho Cucamonga, CA	Not to pour ice-water on the deal, but let's hope it (the sure-grip unit) isn't worn-out (needing new clutches) and therefore acting like it's an "Open" differential. Even if...it can be rebuilt and with some luck, it may work just fine, as-is.

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117408 09/09/08 11:37 PM 09/09/08 11:37 PM
Joined: Apr 2004 Posts: 479 Tucson, Arizona J johnnyrotten mopar
johnnyrotten mopar J Joined: Apr 2004 Posts: 479 Tucson, Arizona	Good score Another thing to remember on install is the centering pin in the posi if you do not have NON adjustable bearings on your axles.

Re: Did I find a SURE GRIP ??? [Re: johnnyrotten] #117409 09/16/08 04:20 PM 09/16/08 04:20 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	Got around to turning the gears and found it stamped 3:23 Nother question, Very easy to turn one way and VERY hard to turn the other way, Normal??? Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117410 09/16/08 04:26 PM 09/16/08 04:26 PM
Joined: Jan 2003 Posts: 75,070 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,070 U.S.S.A.	Quote: Got around to turning the gears and found it stamped 3:23 Nother question, Very easy to turn one way and VERY hard to turn the other way, Normal??? NO, again look at the RUST on the gears , I'll bet thats not the only thing that has rust on it . YMMV

Re: Did I find a SURE GRIP ??? [Re: JohnRR] #117411 09/16/08 04:55 PM 09/16/08 04:55 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	Quote: Quote: Got around to turning the gears and found it stamped 3:23 Nother question, Very easy to turn one way and VERY hard to turn the other way, Normal??? NO, again look at the RUST on the gears , I'll bet thats not the only thing that has rust on it . YMMV Gears look better in person, actualy very clean. Next question, removed the 5 bolts at the backing plate, should the axle just slide out or am I going to have to bang on it and fight with it? "VMMV" ?? Thanks Jeff Last edited by Butt Ugly; 09/16/08 04:55 PM. Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

Re: Did I find a SURE GRIP ??? [Re: Butt Ugly] #117412 09/16/08 05:11 PM 09/16/08 05:11 PM
Joined: Mar 2008 Posts: 571 Western NC 68Bullit mopar
68Bullit mopar Joined: Mar 2008 Posts: 571 Western NC	It will slide out. Sometimes, you may have to tug on it a little. The best way that I have found is pull it hard and try to add a little twist to either side as you pull, and it will slide out. You should only pull it about 2" or so, just be sure not to pull it all the way out, as you may cut the inner housing seal with the splines of the axle. Some will say to replace those housing seals, but for now, I'd just get the diff in there, a little over two quarts of diff oil, THEN additive, and see how the gears work first Last edited by 68Bullit; 09/16/08 05:13 PM.

Re: Did I find a SURE GRIP ??? [Re: 68Bullit] #117413 09/16/08 05:14 PM 09/16/08 05:14 PM
Joined: Jul 2003 Posts: 2,344 Cincinnati, OH 6 6T6Cuda top fuel
6T6Cuda top fuel 6 Joined: Jul 2003 Posts: 2,344 Cincinnati, OH	A trick is to put the drum back on backward and thread a few of the lug nuts on loosely and use it as a slide hammer to pull the axles out. DO not try to pry them out...

Re: Did I find a SURE GRIP ??? [Re: 6T6Cuda] #117414 09/16/08 05:47 PM 09/16/08 05:47 PM
Joined: Oct 2007 Posts: 1,951 Toronto Ontario Butt Ugly OP top fuel
Butt Ugly OP top fuel Joined: Oct 2007 Posts: 1,951 Toronto Ontario	Thanks again for all the info guys. I'll go give the axles a tug, don't have the drums to try that neat slide hammer trick. Faster Horses, Younger Women, Older Wiskey, More Money --- Tom T

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