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#26 | |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: what gears do i need on differential?
Quote:
Ray |
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#27 |
Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: what gears do i need on differential?
I agree with Ray. The 3.08 (3.07) was probably the most common C10 ratio out there. This is not a hot rod gear, it is a mileage gear, but it still gets it done. I ran 2 different trucks on 31" tires with no problems for years.
Ray and I agree on the easiest way to check gear ratios too. Simple, fast, non-intrusive, accurate.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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#28 |
Registered User
Join Date: Feb 2008
Location: sacramento california
Posts: 204
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Re: what gears do i need on differential?
ok so ihave 4.11 gears and im thinking on puting 3.40s do u think that i will have any problems if i do? also what other driveshaft from another vehicle will fit whit out cutting or anything?(shortbed). i never done gear changing before but i seen videos they use some kind of tool with a gauge dial. do i realy need that tool or should pay someone who knows how?
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#29 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: what gears do i need on differential?
if you have no idea whats involved, then I'd recomend paying someone. The problem is, it won't be cheap.
Even if you had the tools there for you, this isn't something most people should try. If you don't get it dead nuts right, it'll chew them up and spit them out, and damage other stuff at the same time. |
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#30 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: what gears do i need on differential?
Yeah, what he said^^^
Gear swapping is not a job for a novice. Pay a pro, it will still cost less in the end. Destroying parts and having to pay to fix it after it fails, is expensive.
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#31 |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: what gears do i need on differential?
You will come out ahead by buying a complete rear end with the ratio you want. This will be much cheaper than buying gears and paying someone to set them up in your housing. The rear end swap is something you can do yourself without needing any special skills or tools.
When you are done, you might even be able to sell your old rear to someone who wants the ratio that's in it. Ray |
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#32 |
Registered User
Join Date: Nov 2009
Location: stoddard nh
Posts: 693
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Re: what gears do i need on differential?
whats wrong with the driveshaft?
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1972 gmc c25 292/sm465 dana 60 w/5.13s 1973 vw super beetle 1600cc/4spd(baja bug) 1974 chevy c60 351v6/np-540+2 speed eaton rear 2005 chevy cobalt 2.2l |
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#33 |
Registered User
Join Date: Feb 2008
Location: sacramento california
Posts: 204
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Re: what gears do i need on differential?
thanks my mecanic coute me$150 for the job i think is cheap where can i buy the ring and pinion? i want to change the drive shaft with something lighter like my newer gmc is some kind alloy metal
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#34 |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: what gears do i need on differential?
If you want to install 3.07 gears you will also need to replace the differential case. This is the part that the ring gear bolts to. Your mechanic will probably not want to press off your old bearings and re-use them on the new parts, so this means you will need new bearings. You will need new seals and gaskets also. At this point, you are way beyond the cost of a salvage yard rear.
Ray |
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