Used 8 3/4 pig
#2883015
02/02/21 09:06 AM
02/02/21 09:06 AM
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Joined: Jan 2003
Posts: 670 Third rock from the sun.
busboy
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 670
Third rock from the sun.
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Going to look at a used pig later this week. It a 3.23 with a clutch suregrip. Other than obvious damage to the gear teeth is there anything else I should look for? Gonna use some dye to check the pattern but that’s about all I could think of. Any suggestions welcome, thanks.
Oh yeah, it's a hybrid.....it burns gas and tires!
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Re: Used 8 3/4 pig
[Re: Pacnorthcuda]
#2890633
02/19/21 05:33 PM
02/19/21 05:33 PM
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Joined: Jan 2003
Posts: 670 Third rock from the sun.
busboy
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 670
Third rock from the sun.
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Sorry for the slow reply. Turned out it’s a 741 case, suregrip is cone not clutch. Very little backlash slop, about .008-.010, however pushing the yoke in/out there’s about .050 play. Looking down the axle splines the plug is still there, retainers and clips show no damage. It’s a 3.23 gear set, that’s what I’m after, what’s required to get rid of that yoke play or can I run with it? This is for highway cruising, no dragstrip.
Oh yeah, it's a hybrid.....it burns gas and tires!
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Re: Used 8 3/4 pig
[Re: busboy]
#2890639
02/19/21 05:44 PM
02/19/21 05:44 PM
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Joined: Jan 2006
Posts: 704 USA
rftroy
super stock
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super stock
Joined: Jan 2006
Posts: 704
USA
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0.050" play on pinion yoke means complete rebuild and inspection for damaged parts. If I were going to use it, I would throw away the gearset. Only exception I can think of is if, for some reason, the yoke was removed, then re-installed finger tight; but for that you had better have a solid history and record of any work. Most probably, though, it's junk. Plus, a cone sure grip is not rebuildable. I am not as negative on the cone type as many people, but, if it's very used, it's not worth using for the short life it may have left.
Robert
Last edited by rftroy; 02/19/21 05:56 PM.
AAR 4-speed 3.91, Tor-Red; 70 440 6 pack Roadrunner 4-speed 3.54, Plum Crazy; 68 Formula S conv 383 4-speed 3.23, Electric Blue; 69 Barracuda conv Slant 6 OD4 2.94, 71 B5 Blue; 78 Lil' Red Truck, Red; 70 Challenger S/E. 505 6 pack, Passon 5-speed, 3.55, B7 Blue
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Re: Used 8 3/4 pig
[Re: busboy]
#2890719
02/19/21 08:39 PM
02/19/21 08:39 PM
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Joined: Jan 2003
Posts: 12,154 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,154
Benton, IL.
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Check how tight the cones are per the service manual. It they are not tight enough, just have .050 or so shaved off the small end of the cone. That will stop them from bottoming out and allow them to grab the tapers again. I have done this several times with good success. But the center section needs to be cheap enough to justify the extra time and effort.
Master, again and still
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Re: Used 8 3/4 pig
[Re: roadrunninMark]
#2893613
02/27/21 08:59 AM
02/27/21 08:59 AM
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Joined: Nov 2020
Posts: 348 Isle of Sheeps
Gtxxjon
enthusiast
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enthusiast
Joined: Nov 2020
Posts: 348
Isle of Sheeps
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Sounds like an early A-Body suregripper. Most ‘cone units’ I have dis-assembled have been worn away to slipping. Once this happens, the diff becomes ‘open’ and the spiders weld themselves to the centre shaft! Everything can be fixed, but why waste time and money on a 741? Peeps spend thousands on engines, maybe a grand on the trans and 100 bucks on the axle lol... My motto is, “start at the back and work forwards”... 50 year old diffs are ‘worn out junk’ True-Trac every time for me... 3.23’s are the best alrounders but I prefer 3.73’s myself.
Last edited by Gtxxjon; 02/27/21 09:02 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: Used 8 3/4 pig
[Re: Gtxxjon]
#2893625
02/27/21 09:56 AM
02/27/21 09:56 AM
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Joined: Jan 2003
Posts: 12,154 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,154
Benton, IL.
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Except for the part about spider gears occasionally welding to the shaft, the above post is long on opinions and short on facts.
The OP said that this will be a street car, not a drag car. The 741 and cone will do that job if it's in good shape. I would not want it on the drag strip with drag radials, but it could be fine on the street even at it's age.
Master, again and still
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