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gsxrjammie

Junior Member
Joined
Dec 8, 2016
Posts
2
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Location
Cookeville,TN
First Name
Jammie
Truck Year
1987
Truck Model
R30
Engine Size
5.7
Hello everybody.

Name is Jammie, from Tennessee. Not new to square body trucks I have owned a few c10 in the past. I am however new the truck I just picked up which is a 1987 Chevy R30 3+3 dually. I have never owned anything this big before, and I have never owned a dually before. Truck was originally a fuel injected 454 truck. Has power windows(maybe locks as well) I dont know I was to excited to get the truck I didnt look at the locks. Truck needs some dolling up and the interior is trashed. I got it as a functional project. Currently has a Carbed small block in it running off one tank. Hoping to get some info and help on figuring out a little bit about what the truck has as far as a rear end in it ( has the build sheet still on the glove box dash) and I will post some pictures pretty soon. I am in the process of taking a bunch of vinyl stickers off it from the guys business he was using to pull a trailer.
 

74 Shortbed

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Aug 12, 2013
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Welcome to the site.
 

theblindchicken

Full Access Member
Joined
Oct 24, 2013
Posts
1,518
Reaction score
265
Location
SoCal
First Name
Christian
Truck Year
1974
Truck Model
K10 5" lift + 2" BL
Engine Size
350-4, 0.030" over
Welcome to the board!

If your axle tubes are pretty clean, you can use the Squarebody rear axle codes list to find our what the factory gears that your particular axle came with.

If the gears have been changed you'll have to either crack em open and see what the they're stamped with or give it a shot in jacking it up and spinning the wheel a full rotation and counting how many times the pinion spins.
 

1973c10

Full Access Member
Joined
Sep 25, 2015
Posts
6,376
Reaction score
24,020
Location
Oregon
First Name
Don
Truck Year
1973
Truck Model
C10
Engine Size
454
Welcome
 

gsxrjammie

Junior Member
Joined
Dec 8, 2016
Posts
2
Reaction score
0
Location
Cookeville,TN
First Name
Jammie
Truck Year
1987
Truck Model
R30
Engine Size
5.7
Welcome to the board!

If your axle tubes are pretty clean, you can use the Squarebody rear axle codes list to find our what the factory gears that your particular axle came with.

If the gears have been changed you'll have to either crack em open and see what the they're stamped with or give it a shot in jacking it up and spinning the wheel a full rotation and counting how many times the pinion spins.

I am leaning toward cracking open the rear diff and doing a fluid change and some good general maintenance on her I dont think she has been anything but abused so I will try to give her some love.
 

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