Question about 1991 Chevrolet Silverado 2500

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1990 chevrolet 2500 rear end substitute

I can not find a rear end for this truck it is a 14bolt 8 lug semi float and I dont really care about the gear ratio can I substitute another year for this trucks rearend

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Posted on Mar 13, 2009


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I have noticed a clunk type noise/feel in the rear end after taking off from a stop. Tonight a really bad grinding/clunking sound both in drive and reverse, ion gear or neutral. I've been reading...

if the diff is not leaking oil there should be no reason to be low. If you hear a noise in neutral with the truck not moving, its not in the rear end. it may be the trans or transfer case.

Sep 01, 2011 | 1999 Chevrolet Silverado 2500

1 Answer

Removeing spider gears there are 2 small shafts acros opening how do they come out

Remove the rear cover. Remove the 5/16 (8mm) bolt that holds the center pin and slide the pin out. Push in on the axle (from the outer stud/drum end). When the "C" clips fall out (inside of the rear-Pumpkin) that hold the semi-floating axle in place, slide the axle out. The gears should come right out.

Feb 07, 2011 | 1994 Chevrolet Suburban

1 Answer

I want to put a 700r4 in a 86 suburban 7.4liter for better gas milage.lts a 8 lug so do i have to change the rear end also?

No, your rear gears should match well with the 700R4, which is quite possibly the best automatic transmission ever produced by GM.

Jan 19, 2011 | Chevrolet Suburban 2500 Cars & Trucks

1 Answer

How to remove a pinion bearing from a 1985 14bolt 9 1/2 ring gear chevy

realistically?? take the rear end apart , you can purchase the bearings and seals as a kit, that will include carrier bearings pinion bearings , crush spacer and seals, clean the housing carefully, you will have to set the backlash on the carrier, adn also the preload on the pinion

Nov 18, 2010 | Chevrolet 2500 Cars & Trucks

1 Answer

5 to 8 lug conversion

you may need to use the control arms, springs and knuckles, as the ball joints of the 93 g20 may not fit the 96 g3500.

Mar 07, 2010 | 1993 Chevrolet G20

1 Answer

Can the gears be changed from 4.11 to 3.7 w/o changing rear end?

Yes, you can leave the axle housing installed, but you will have to pull the axle shafts. You will likely have to purchase a specialty tool to do this.

(If you have the massive drums found on the 3500s and some 2500's, this would also be a good time to re-grease your bearings and check your rear brake shoes and change them if worn beyond 50%, since you will have the axle ends taken apart. These drums are very heavy. Do not remove the trapped bearing from the drum.)

To go from 4:11 to 3:73, You only need to swap out the gears in the differential (including the pinion gear) Be sure to check for proper alignment and backlash. Re-install axle shafts. Replace, do not reuse any seals. You may also need to reprogram the trucks shift points for the new gear ratio to maximize efficiency results.

Note: By changing your gear ratio to 3:73 You may potentially decrease your trucks Towing/Hauling weight capacity. Many GM trucks are equipped with an Eaton mechanically locking rear (RPO code: G80). You can find out if yours is so equipped, by checking the label inside the glove box. Personally I prefer the G80.

(I have the 3:73s in My '97 C2500 and average around 10.5MPG city, but long freeway runs can hit 15+MPG. My GVW is 8600LBS, and 10,000LBS Towing capacity. "Stop & Go" driving is your worst enemy with these trucks.)

Consider if all the work involved is worth it in performance gains before going forward.

Nov 16, 2009 | 1996 Chevrolet K2500

1 Answer

Have a 95 seirra 2500 pickup rear axle seal and bearing out, do i need to go into the differential to pull axle?

Depends on what kind of axle you have. Is it a semi-floating axle, or a full-floating type?

Oct 09, 2009 | 1995 GMC Sierra

1 Answer

Grinding, 1990 suburban

This could be 1 of 2 Things. Either the Transmission needs Service REALLY Badly or you have a Tooth Broken off of the Gears in the Rear End.

Jan 23, 2009 | 1990 GMC Suburban

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