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03-20-2015, 12:34 PM
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#1 |
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Registered User
Join Date: Mar 2015
Location: Centreville, MD
Posts: 20
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dont know which series my carrier is
im looking to put a posi in my truck. i'm not exactly sure which series i have now but i have 3.73 gears and would like to keep it that way. i was wondering if a 4 series posi would fit in a 3 seires
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03-20-2015, 12:38 PM
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#2 |
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Senior Member
 
Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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Re: dont know which series my carrier is
3.73 gears are a series 4 carrier. The different carriers cover a set of numerical gear ratios
__________________
68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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03-20-2015, 12:49 PM
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#3 | |
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Registered User
Join Date: Mar 2015
Location: Centreville, MD
Posts: 20
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Re: dont know which series my carrier is
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03-20-2015, 01:34 PM
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#4 |
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Registered User
Join Date: Jan 2012
Location: Henderson,TX
Posts: 336
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Re: dont know which series my carrier is
they make 3.73 that will fit a 3rd series carrier. my truck originally had a 3.08 in it and I ordered a 3.73 that fit the 3.08 carrier. it is a Richmond I bought from summit racing so it is possible you have the same thing.
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03-20-2015, 01:45 PM
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#5 |
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Senior Member
Join Date: Nov 2001
Location: Rapid City, SD
Posts: 2,281
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Re: dont know which series my carrier is
A variety of companies make both a 3 series 3.73's and 4 series 3.73's.
But OEM only had 4 series 3.73's. If the previous owner rebuilt the rearend with a 3 series 3.73 to go on an originally numerically lower gear. Then you may need to check it out first.
__________________
My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White |
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03-20-2015, 02:12 PM
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#6 | |
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Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: dont know which series my carrier is
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03-20-2015, 03:04 PM
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#7 | |
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Senior Member
Join Date: Nov 2001
Location: Rapid City, SD
Posts: 2,281
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Re: dont know which series my carrier is
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My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White |
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03-20-2015, 11:12 PM
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#8 | |
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Registered User
Join Date: Mar 2015
Location: Centreville, MD
Posts: 20
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Re: dont know which series my carrier is
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