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#1 |
Registered User
Join Date: Jan 2010
Location: Brewton AL
Posts: 236
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Dana 70 and 70hd Use different gear sets?
Looking on Ebay(and the net in general) for gearsets for my Dually with a 70 hd...but all I am finding are Dana 70 ring/pinions....but 70 and 70hd master bearing/install kits. do they use the same gearsets? And best I can tell- a 3.54 is the highest gear I can find for it, is that tall as they get?
I'd like to be able to pull my car at 75-80 at about 23-2500 rpm....possible with a non OD trans?
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1989 Chevy Crew Cab Dually - 454/400, Trans Am Hauler, Future bagged project. 96 Trans Am: 383/m6 - 11.98@115 on 315 M/T D/R's - 408rwhp 394 rwtq 05 VW Passat TDI - 38mpg @75mph ![]() 07 Bandit 1250S - Two wheeled fun! Click here to see my FQuick Garage! Last edited by Leedogg; 04-29-2011 at 07:08 PM. |
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#2 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,460
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Re: Dana 70 and 70hd Use different gear sets?
There are a bunch of variations of 70s out there, not sure what is different from one to the other. I know one of the model 70s that was put in the early Cummins trucks had 3.08s in them.
Check out Summit Racing or Ring-pinon.com, might be able to find the difference there.
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#3 |
Registered User
![]() Join Date: Dec 2002
Location: Upper Sandusky Ohio
Posts: 72
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Re: Dana 70 and 70hd Use different gear sets?
Dont hold me to it, but I'm pretty sure that the early cummins had whats called a dana 71 to house the 3.08's because of clearance inside the 70 housing. I know the fronts with 3.08's were actually a dana 61. Ring gears from a 60 will not fit in a 61, so i'm goin to assume that goes the same for the 70/71. I am fairly certain that any 70 gear set will fit in any 70 case. The differences are in the external bearing sizes. So you will want a bearing kit from a 70hd
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88 Crewcab Dually 5.9 Cummins, 5306 Eaton 6-speed, converted 4x4 w/52's up front, 90 front clip(parting out) 1986 ElCamino (needs motor) 1970 C30(future service truck for my ag-equipment repair business) 1970 CST10(parting out and partial donor for the '70 C30) 2000 GMC 1500 ext cab sb, z71, 5.3 loaded auto |
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#4 |
Registered User
Join Date: Jul 2009
Location: Northern California
Posts: 411
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Re: Dana 70 and 70hd Use different gear sets?
yes they use different ring and pinions there is different offsets on the carriers. there is a explanation on www.ringandpinion.com
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1991 Chevy suburban 3/4 ton 4x 4:56 and pulls great 1979 Chevy 1/2 ton long bed diesel 1974 Chevy crew cab short bed 3/4 ton 4x4 project 1991 Chevy suburban 2wd 1984 Chevy suburban 3/4 ton 4x 6.5 detroit with turbo 1961 Chevy pickup 1/2 ton 2wd 1975 gmc crew cab short bed 2wd |
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