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#1 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Differential RPO codes deciferred!!!
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#2 |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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But my truck doesn't give any information on the RPO sheet about any sort of gearing...
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#3 | |
Registered User
Join Date: Jul 2001
Location: Atlanta GA
Posts: 1,704
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Quote:
Nice site for axle info.
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Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project |
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#4 |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,906
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they also dont have the GQ1 rpo code, which is the standard axle... i assume its 3.08.. still a good site though
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Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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#5 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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My truck lists the gear ratio on the option sticker in the glove compartment. Most of the people with 80s trucks I have talked to have 2.73s.
Slonaker |
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#6 | |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Quote:
For example the standard ratio for a 1984 1/2 ton 4x4 under 6500# GVW is 2.73 but a 1980 1/2 ton 2wd under 6500# is 3.08.
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Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed |
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#7 |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,906
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ahhhhhhhhhhhhhhhhhhhhhhhhhhhhh user text holds true again.
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Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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#8 | |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Quote:
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Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed |
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#9 | |
yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
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Quote:
![]() I give him an A for effort tho. ![]()
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Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale |
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#10 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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The above codes would probably only be found on the build sheets.
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#11 | |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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Quote:
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#12 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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TIM - You wanna trade gears?
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Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#13 |
Registered User
Join Date: Sep 2003
Location: Lewisville, NC
Posts: 1,836
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My truck had the following options
1: 305 v8 engine 2: 4 spd automatic transmission 3: standard gear ratio (GQ1 4: 31x10.5" tires front, rear, and spare 5: locking differential (G80) its an 1985 model shortbed 1/2 ton with a GVW of 6100 lbs, and it had 3.08 gears, talk about one retarded factory combo, OD couldn't even be used because it would only turn like 1600 rpm at 65mph.
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1985 Scottsdale Shortbed 4x4 Stout 350 with some "upgrades"-700r4-33x12.5" Mud Tires, Warn 8274-50 winch. 2005 Chevrolet Colorado Regular Cab 2wd 4-banger, 5 speed, Street Pack with 3.73 axle. |
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