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02-04-2017, 11:48 AM
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#1 |
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Roadtrip!
 
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,764
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BB 1/2 ton gears.
Parting out this burb and got to thinking about the rear end. Would this have a 3:07 rear with a 402/400 combo? And no I can't spin it over to count. I think the brakes are rusted in place.
I know the 3/4 tons usually got 3:54 gears.
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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02-04-2017, 11:54 AM
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#2 |
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Account Suspended
 Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: BB 1/2 ton gears.
I always see 3:07 in those big block half tons
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02-04-2017, 12:32 PM
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#3 |
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Senior Member
Join Date: Jan 2007
Location: Turlock, CA
Posts: 8,738
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Re: BB 1/2 ton gears.
is it a 6-lug dana 60?
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Please help my sister in law with her battle with cancer https://gofund.me/902f6fce Project "C10 Fever" (68 factory black 396 swb) Project "Little Sister" (70 c10 blue original paint refresh) Project "Blue Bomb" (70 c30 blue original paint refresh) SOLD Project "Vitamin C" (71 c10 orange original paint refresh) SOLD |
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02-04-2017, 01:33 PM
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#4 |
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Senior Member
 
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: BB 1/2 ton gears.
I think mine was until I installed a 3:55 posi ...
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A husband can be right...or...A husband can be happy.  67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk.  1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc   JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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02-04-2017, 08:32 PM
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#5 |
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Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,079
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Re: BB 1/2 ton gears.
3:07 was standard in big block trucks
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67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle |
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02-04-2017, 09:17 PM
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#6 |
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Senior Member
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,976
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Re: BB 1/2 ton gears.
Concur 3.07. And 3.73 and 4.10 were not options for the big blocks I believe - could probably be special ordered though (i.e. non-RPO order). The 3.54 ratio mentioned above was used on C20 and above with a big block (4.10 was optional in the C20 or above Longhorn I think). 3/4 ton or higher with a sbc got the 4.10 standard.
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02-04-2017, 09:32 PM
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#7 |
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Roadtrip!
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,764
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Re: BB 1/2 ton gears.
3:07...Kind of what I thought also, thanks for the info.
__________________
67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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