Rathman
Poster
Posts: 55
Loc: Arkansas
Reg: 08-21-16
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01-11-25 12:08 PM - Post#2876978
I've got a lot of slack in my diff, been that way for years, but after this snowy weather and getting stuck in my own driveway, my open diff days are over, I have a Chilton's but it doesn't give any specs, I don't want to go crawl under a mud and snow stuck truck, so I'm hoping one of you kind gentlemen will happen to know, spline count,ring gear size and anything else I need to order the right setup. It's a 6 lug, 5 speed manual, 4 wheel drive, I've heard they all pretty much have the same size standard rear diff.
| 93 Cheyenne K1500 Ext.cab,short bed, Chevy 400 engine, Edelbrock aluminum intake , and carb,5 sp.manul trans |
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 Shepherd
Valued Contributor
Posts: 3692
Loc: Lake George, NY
Reg: 11-11-15
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01-11-25 03:18 PM - Post#2876988
In response to Rathman
Should be a tag on the diff stating the gear ratio, your axle shaft spline count, once you find out what the rear is that should be easy to look up.
Edited by Shepherd on 01-11-25 03:20 PM. Reason for edit: No reason given.
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 scrambldcj8
"6th Year" Silver Supporting Member
Posts: 2759
Loc: Belchertown, MA
Reg: 04-06-03
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01-11-25 06:04 PM - Post#2876993
In response to Shepherd
8.5" 30spl
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bobb
Super Senior Member
Posts: 6920
Loc: paradise
Reg: 09-05-03
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01-12-25 10:47 AM - Post#2877007
In response to Rathman
are replacing the whole rear end?
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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scrambldcj8
"6th Year" Silver Supporting Member
Posts: 2759
Loc: Belchertown, MA
Reg: 04-06-03
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01-12-25 02:34 PM - Post#2877012
In response to bobb
If your open diff days are over might I suggest an Eaton Tru-Trac. They are seamless in operation and very effective (respond well to brake modulation if the situation arises...like a tire off the ground as they still require some resistance). They don't require any special additives or maintainance either.
Just a thought
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Rathman
Poster
Posts: 55
Loc: Arkansas
Reg: 08-21-16
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01-13-25 10:22 AM - Post#2877043
In response to Rathman
Thank you everyone who replied, the Chilton's did say that all the 4x4 rear ends are the same, so the 8.5 in. 30 spl, should be correct, I'll make sure and see about the tag, but I'm 99 percent sure about the 8.5, after 2 days of trying to dig it out, only to get stuck again, my neighbor must of decided to have pity on me, and with 3 long chains to reach the road, his one ton with the utility bed and big censored welder in the back, barely giving it any gas, pulled me through and out of the mud bog, I am going with the tru trac, I'm just doing the pumpkin innards, not the whole rear end, the truck deserves it, she's still got a lot of miles left in her, and I'm past being tired of the slack and open diff, everything on her still works, and she ain't rusted at all, no computer, and carbureted with a Chevy 400, she's a keeper, thanks again guys for the input, muchly appreciated 👍
| 93 Cheyenne K1500 Ext.cab,short bed, Chevy 400 engine, Edelbrock aluminum intake , and carb,5 sp.manul trans |
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bobb
Super Senior Member
Posts: 6920
Loc: paradise
Reg: 09-05-03
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01-14-25 07:39 AM - Post#2877077
In response to Rathman
i would do axle bearings too. also check your u joints real good.
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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scrambldcj8
"6th Year" Silver Supporting Member
Posts: 2759
Loc: Belchertown, MA
Reg: 04-06-03
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01-14-25 09:47 AM - Post#2877081
In response to Rathman
4x2 and 4x4 axles are not the same....they differ only in width.
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2plus2
Member
Posts: 1301
Loc: Mission,BC
Reg: 02-03-05
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01-14-25 05:34 PM - Post#2877098
In response to Rathman
Look at the diff cover
10 bolts holding the cover its a 10bolt
14 its a 14 bolt 9.5inch semi floater
69 Canadian Pontiac 2+2 Convertible
Factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35'S
07 Town Car Loaded,Tinted,Getting Bagged |
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scrambldcj8
"6th Year" Silver Supporting Member
Posts: 2759
Loc: Belchertown, MA
Reg: 04-06-03
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01-14-25 05:56 PM - Post#2877099
In response to 2plus2
Look at the diff cover
10 bolts holding the cover its a 10bolt
14 its a 14 bolt 9.5inch semi floater
Other big differences....but how many bolts in a FF14? 😁
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