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05-25-2013, 03:04 PM
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#1 |
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Registered User
Join Date: Apr 2013
Location: pleasant hill missouri
Posts: 8
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1968 3/4 ton
hey all...I just recently purchased a 68 3/4 ton...It has a 350 with a 400 turbo trans.It has the a Dana 60 with 4:10 gears and pretty much has a top speed of around 60 mph. My question is, how much better should I expect with a 3:73 gear?
Thanks |
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05-25-2013, 03:23 PM
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#2 |
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Cluster King
 
Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: 1968 3/4 ton
http://richmondgear.com/101032.html
Use the link, plug your numbers in and get the answer you are looking for 
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05-25-2013, 03:27 PM
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#3 |
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Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 1968 3/4 ton
Here is a calculator so you can run "what if" combinations.
http://www.summitracing.com/expertad...tio-calculator The change from 4.10 to a 3.73 is about a 10% change. If you are trying to turn a truck into a freeway flyer an O/D would be a better choice. A Gear/Vendors would be my first choice behind a TH400. Maybe switching to a built 200R4 or 700R4 automatic would be easier for you. There are also bolt in Spicer/Dana 60 rears with 3.54 gears found in big block trucks. That would be about a 15% drop in RPM across the board, kind of like being in O/D all time. Without knowing how you plan to use it, it is hard to make strong specific recommendations.
__________________
Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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05-25-2013, 03:32 PM
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#4 |
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Registered User
Join Date: Apr 2013
Location: pleasant hill missouri
Posts: 8
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Re: 1968 3/4 ton
It's a daily driver....around 80-90 miles a day.
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05-25-2013, 03:36 PM
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#5 |
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Cluster King
Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: 1968 3/4 ton
I agree 100% with Tim's suggestions.
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05-25-2013, 04:08 PM
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#6 | |
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Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 1968 3/4 ton
Quote:
__________________
Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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05-25-2013, 09:30 PM
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#7 |
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Proprietor of Dale's Corner
Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,023
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Re: 1968 3/4 ton
It may not be an economical commutor but its got great " cool" factory
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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