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#1 |
Registered User
Join Date: Oct 2005
Location: Leamington Ontario
Posts: 44
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What gears are in it?
My truck is an 86 Sierra Classic. It had a 305/TH350 with air. The rear has never been out of it. I'm just curious on what gears may be in my truck.
Thanks |
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#2 |
Registered User
Join Date: Sep 2005
Location: Charleston, South Carolina
Posts: 285
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Re: What gears are in it?
273:1 possibly. Check RPO sticker in your glovebox.
Curt
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1970 Chevrolet Blazer 2 wheel drive - SOLD |
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#3 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Re: What gears are in it?
Most common gears are 2.73 and 3.08 ratios. But it could of been ordered with a pretty wide list of gears to choose from if they wanted.
The RPO might help if the differential has never been removed. There is a production code on the passenger side axle tube. That will tell what it was installed from the factory with. The only real way to tell is taking the cover off and looking. Not saying that you have to do so but you wont have any doubts about what it might be anymore.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI Last edited by MylilBowTie; 11-08-2005 at 10:29 PM. |
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#4 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Re: What gears are in it?
My '86 Chevy lists the rear gears as 3.08 in the glove compartment. Most seem to have the 2.73 gears, though.
Slonaker |
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#5 |
Registered User
Join Date: Oct 2005
Location: Leamington Ontario
Posts: 44
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Re: What gears are in it?
Thanks I'll check out the codes when I get it back from the shop.
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#6 | |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Re: What gears are in it?
Quote:
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#7 |
Registered User
Join Date: Oct 2005
Location: Leamington Ontario
Posts: 44
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Re: What gears are in it?
Where did you find it? Was it on the housing? In the glove box? I get it back tomorrow.
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Trucks:86 GMC C15 Longbox , 05 Silverado 4x4 The other one: 89 Mustang LX In pieces, 93 Tempo |
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#8 | |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Re: What gears are in it?
Quote:
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#9 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Re: What gears are in it?
RPO list should be on the driverside fender on newer 81-87 trucks and in the glove box on the inside of the door pannel 73-80. Those are loose years but thats where the RPO list should be if it has one.
Does the truck have a tachometer installled?
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
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#10 |
Registered User
Join Date: Oct 2005
Location: Leamington Ontario
Posts: 44
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Re: What gears are in it?
THe tach will be installed when I get it back from the shop.
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Trucks:86 GMC C15 Longbox , 05 Silverado 4x4 The other one: 89 Mustang LX In pieces, 93 Tempo |
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#11 | |
Registered loser
Join Date: Oct 2005
Location: Williston ND
Posts: 289
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Re: What gears are in it?
Quote:
I think you've got it backwords there. I own a 73 and the RPO list is on the Driverside Inner fender in the the engine compartment.
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-Nate- There is no replacement for displacement ![]() 1996 Buick Riviera 3.8L S/C V6- DD 1973 Chevrolet Cheyenne Super C/10 LWB 454/TH350 |
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#12 | |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Re: What gears are in it?
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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#13 |
Registered User
Join Date: Oct 2005
Location: Leamington Ontario
Posts: 44
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Re: What gears are in it?
Mine is in the glove box. I still can't check it out.
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Trucks:86 GMC C15 Longbox , 05 Silverado 4x4 The other one: 89 Mustang LX In pieces, 93 Tempo |
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