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05-12-2014, 05:38 PM
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#1 |
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Truck Nut
 
Join Date: Jun 2007
Location: Wills Point, Texas
Posts: 407
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Dually gear options from factory
On 81-87 2wd chevy duallys, was a 4:10 the standard ratio or an option?
Was 3:73 the only other available from the factory? I know I can get different gears aftermarket. Just wanna know what came from the factory. I have a 83' single cab 454/400th combo. No sticker in glove box for codes. I know GT4 is 3:73 and GT5 is 4:10. I'm going to pull the cover and count gears tomorrow.
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Tony Kee Texas Square Bodies |
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05-12-2014, 05:47 PM
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#2 |
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Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: Dually gear options from factory
from what i understand with the dana 70 you could get 3.42 3.73 4.10 and 4.56
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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05-13-2014, 08:37 AM
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#3 |
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Registered User
Join Date: Sep 2013
Location: Auburn, Indiana
Posts: 50
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Re: Dually gear options from factory
I believe 3.73 were standard, all others were special order.
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05-13-2014, 12:45 PM
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#4 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,177
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Re: Dually gear options from factory
Here's a sample powertrain chart from the '87 info packet.
There is no mention of dually (RO5) vs single wheel so it does not appear that was a discriminator in axle ratio availability. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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05-13-2014, 06:14 PM
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#5 |
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Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,479
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Re: Dually gear options from factory
We had a 2wd C30 with 3.73s and a 4 speed, real dog to drive, from what I remember 4:10s were standard, we ordered the 3:73s
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86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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05-13-2014, 06:48 PM
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#6 |
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Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: Dually gear options from factory
mine has 373s and a th400 its anything but doggy
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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05-13-2014, 06:54 PM
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#7 |
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Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,479
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Re: Dually gear options from factory
Had an 87 with 4:10s and the 5.7 and a 4 speed, lot easier to drive
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86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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05-13-2014, 08:48 PM
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#8 |
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Registered User
Join Date: Dec 2012
Location: Preble county ohio
Posts: 1,914
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Re: Dually gear options from factory
ahh, mine has a 454, that would be the difference
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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05-15-2014, 09:44 PM
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#9 |
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Truck Nut
Join Date: Jun 2007
Location: Wills Point, Texas
Posts: 407
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Re: Dually gear options from factory
 Thanks Keith!! I'm a dually nut!!
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