Question about 1987 Chevrolet G20

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Rear differential what gear ratio does a 3/4 ton chevy van have with a 350 engine?

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  • Anonymous Feb 12, 2009

    what is the gear ratio for a 92 chevy 3500 4x4 dually
    with 7.4 liter auto

  • Anonymous Mar 21, 2009

    ok i too have chevy g20 van its a 1991 with a 350 I too would like to know what axle and gear ratio i have, and I DO NOT have any sticker or info in the door jamb.

  • Anonymous Mar 22, 2014

    i need to remove and replace front differential on a 2001 chevy taho 3.73 gear ratio

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  • 674 Answers

They came with a couple of ratios check on your door jam there will be a axel code and axel ratio.
good luck

Posted on Aug 24, 2008

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Posted on Jan 02, 2017

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I have a 98 Ford E150 conv. van need to replace complete rear end need to figure out which one I have and what yr will interchange and if a truck rear end work or only a van


Hello Brenda...you will find some identifying information on the actual real axle casing. Stamped numbers, I.D. tag or you can search your VIN (Vehicle Identification Number) or make, model year and series on the internet to see what options were available for rear end gearing ratio's.

Yes you should stick with a similar or identical rear end to ensure proper mounting bracket alignment and gear ratio choices. Dana Model 60, 70 & 80 Axles are not internally identical.

Looks like the standard differential carrier for the E150 is a 8.8" (*10 bolt). Standard, Includes Spider gears, 31 spline, 7/8" shaft.

* Ten Bolt - The rear end cover plate contains 10 mounting plate bolt holes.

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Which other vehicles use the same rear end as 1996 Chevy Blazer 4 by 4 with 7.5 in ring gear


The chevy s-10 pick up, GMC Jimmy, chevy Astor van would have a rear end that would line up and fit.

Apr 14, 2015 | 1996 Chevrolet Blazer

1 Answer

Need the ratio for rear differential on a 99 chevy blazer 4 wheel drive serial #1 1GNDT13W2X2132102


climb under the truck and on one of the bolts of the rear end pumpin( the round part in center of rear end where the gears ar ) there will be a metal tag with the ratio on it.

Jan 10, 2011 | 2000 Chevrolet Blazer

1 Answer

Hey will a 91 chevy blazer differential work for a 2000 chevy blazer


The differential will work ONLY if, obviously, it will fit, AND you NEED to make sure the gear ratio is the same. I'm not familiar with these types, but it will work fine assuming the gear ratio is the same.
If not, the differential you have replaced will try turning the wheels faster then the other one and this creates nothing but a big mess.

I hope this helps!

Jan 07, 2011 | 2000 Chevrolet Blazer

1 Answer

What transmission come out in a 1983 chevy silverado


It should be the 700 r4 transmission with the 350 block,
unless someone changed it out, it could be a turbo 350, if the truck is a 3/4 ton.
if you have 3 gears and over drive it is a 700 r4
only 3 gears turbo 350

Jan 06, 2011 | 1983 Chevrolet Silverado

1 Answer

Need to find gear ratio on 2000 chevy blazer


If you want to find the ratio then you can remove the rear differential cover and spin the wheels by hand to turn the gears and find the number on the carrier gear. The numbers will be what you need to tell what the ratio is.

Nov 05, 2010 | 2000 Chevrolet Blazer

2 Answers

Looking to buy used 1 ton van. I would like to know the engine HP/torque specs for early 80's GM 350 or 6.2 diesel. Thank-you, Charlie


Displacement: 350 cu in (5.7 L)(6.2 L) Power: 145 hp -370 hp
Bore and Stroke: 4.000 in × 3.48 in (101.6 mm × 88.4 mm)

Nov 17, 2009 | 1984 GMC VanDura

1 Answer

I was just wondering if my 2001 chevy blazer has a rear lockin differental??


They were an option but you can find out by looking in your glove box's GM RPO Codes. It's the sicker on the inside of the glove box with numbers and letter.
Here are some listing on the gear ratio you may have,
U4: Rear Axle, 3.08 Ratio             U5: Rear Axle, 3.23 Ratio U6: Rear Axle, 3.42 Ratio 
If it is a GU the G stands for the rear Locking Differential.
Good luck and hope this helps.

May 04, 2009 | 2001 Chevrolet Blazer

2 Answers

What;s the oil capacity for a 2002 chevy trailblazer 4.2 6 cyl?


Here are the Fluid CAPACITIES & MORE:
Engine, with filter..........4.6 quarts[1]
Cooling System, Initial Fill..........12.0 quarts
Automatic Transmission, Total Fill
4 speed 4L60, 60E..........11.0 quarts
Manual Transmission, NV1500..........5.7 pints
Manual Transmission, NV3500..........4.2 pints
Differential, with 8.6 ring gear Rear..........4.0 pints
Differential, with 7.25 ring gear Front..........2.5 pints[2]
Differential, with 8.25 ring gear Front..........4.2 pints[2]
Differential, with 9.25 ring gear Front..........5.9 pints[2]
Differential, Front..........2.5 pints
Differential, Rear..........4.0 pints
Transfer Case,BW4472..........2.5 pints
Transfer Case,NV136/236/246..........4.0 pints
Transfer Case,NP207..........4.6 pints
Transfer Case,NP231, NP233..........2.3 pints[3]
Transfer Case,NV231/233..........2.1 pints[3]
1. After refill check oil level.
2. Do not use synthetic lubricant in axles using RTV sealant.
Synthetic lubricant will chemically atack RTV sealant.
3. Identification: check tag on case.

Apr 13, 2009 | 2002 Chevrolet TrailBlazer

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