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03-17-2005, 11:41 AM
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#1 |
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Foom, foom, foom!
 
Join Date: Mar 2005
Location: Abilene, TX
Posts: 106
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Rear End question
Okay here is my question, My 84 c10 has a 350 in it, but it was changed over from a Diesel. My rear end and suspension have never been changed. Can anyone tell me what gear ratio came stock in a diesel, and possibly what bolt pattern?
The whole thing behind this is, I know My truck is slow to pick up speed off a stop. My future plans include to change over to a 3.73 ratio. ,lower to a 3/4 drop with 17" rims and flowtech Headers. 
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- Dan 84' LWB C10 // 2.5" from collector back. duel Turbo Mufflers // 350 w/ TH350 long Headers//3.73 rearend gears Future Mods 3/4 suspension drop 
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03-17-2005, 01:44 PM
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#2 |
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Professional Beer Tester
Join Date: Aug 2004
Location: Louisiana
Posts: 453
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Dan, most of the 1/2 ton diesels came with pretty tall gears, usually like 2.73 or 3.08. If you still have the RPO code sticker in the glove box or on the left inner fender, the "G" codes are for the rear end ratio. By bolt pattern, I'm guessing you mean the wheel bolt pattern, which should be 5 on 5".
60-66 Nut
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60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500 |
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03-17-2005, 03:47 PM
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#3 |
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Foom, foom, foom!
Join Date: Mar 2005
Location: Abilene, TX
Posts: 106
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Thanks for the help
About bolt pattern, I was talking about differential bold pattern. I've heard of 10 bolt and 12 bolt. I'm away from my truck right now that's why I'm asking.... Thanks again for the help.
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- Dan 84' LWB C10 // 2.5" from collector back. duel Turbo Mufflers // 350 w/ TH350 long Headers//3.73 rearend gears Future Mods 3/4 suspension drop
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03-17-2005, 04:37 PM
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#4 |
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Registered User
Join Date: Feb 2005
Posts: 88
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Well I think it maybe slow because of the 350 gas motor .......Im just kidding you.
 My 84 truck is a 6.2L Diesel and it takes off good for the first 20 miles per hour but after that its somewhat okay.Its a 3.43 rear end and I get 23 Per gallon.
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03-17-2005, 05:38 PM
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#5 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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1984 (1982 -up) will have a 10bolt (unless someone has swapped it).
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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