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#1 |
Registered User
Join Date: Jun 2005
Location: guttenberg, iowa
Posts: 38
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Rear end gears cost?
Hello,
I would like to change gears in my 72 2wd long box, 350 auto. Runs great, headers and has a 12 bolt with leaf springs. It currently has 2:70's and is ok, but I would like to go to a 3:73 and posi. for more snap. Approx. what can I expect to spend for gears, posi set up and poss. labor if a shop does it. Also, is it worth the expense to get the posi. Thanks Rivernut |
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#2 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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2.70? Mind if I ask what that came out of? Can't help ya on the price, but I've heard it gets real expensive real fast. Most trucks came with a 3.08 or .07?? (havin a brain fart) or a 3.73. Not too sure on the posi's but you should be able to pick up a whole rear end for a couple hundred bucks. I think ChevyDude did a rear ratio swap on his truck not too long ago. May want to PM him.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#3 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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The price I got to rebuild mine with posi was right at $900. That was with new R&P and an Eaton diff., all new seals and bearings. For a leaf spring truck I would hunt one down from a later model truck.
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#4 |
Registered User
Join Date: Jun 2005
Location: guttenberg, iowa
Posts: 38
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I think your right about the gear ratio. I just know it's very high speed rear end. I was also having a brain fart when I wrote this. Sorry.
rivernut |
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#5 |
Registered User
Join Date: Feb 2005
Location: Bay Area, California
Posts: 995
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I was quoted $650 for a shop to swap out my 3.73 with a rebuilt 3.08. Not posi though.
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1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree |
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#6 |
Keepin an eye out
Join Date: Feb 2003
Location: So.Cal
Posts: 3,921
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I dumped 1400 into mine w/ new Eaton posi, gears, seals, brakes, bearings and axels.
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1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351 |
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#7 |
Registered User
Join Date: Aug 2004
Location: Overland Park, KS
Posts: 79
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I replaced the axles, seals, installed posi and 3.42 gear with the tools it was about $700.00 to my door. I run a 275/60/15 tire and it sings on the highway with the 3.42. I think a 3.73 will scream....
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