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11-05-2010, 01:09 AM
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#1 |
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Registered User
Join Date: Oct 2010
Location: Fresno Ca
Posts: 35
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Speedometer Swap?
Does or has anyone done a speedometer swap to something electronic and programmable for big tires and lift i have a 1975 k10 with 8" lift 39.5x15 tires and my speedometer is way off i would like to upgrade to something that i can plug into a computer and just reprogram to work with different tires
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11-05-2010, 05:19 AM
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#2 |
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Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Speedometer Swap?
I haven't seen any aftermarket speedos that you program with a computer. The ones I looked at had either a row of dipswitches that you set according to a table or a calibration button that you use in conjunction with driving over a measured distance.
Ray
__________________
Live more responsibly. Eat lower on the food chain. Eat vegetarians. |
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11-05-2010, 05:36 AM
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#3 |
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Registered User
Join Date: May 2009
Location: Washington
Posts: 663
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Re: Speedometer Swap?
zi just drove with a gps for a day and dont worry to much. in MPH 32=35, 50=60, 55=65, 60=75, 75=hauling ass with poorly balanced mud terrains=vibrations
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11-05-2010, 09:08 AM
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#4 |
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Another Day, Another Dollar
Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
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Re: Speedometer Swap?
you can swap out your speedo drive gear relitivlely inexpensively
__________________
-78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square" 
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11-05-2010, 02:29 PM
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#5 |
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Registered User
Join Date: Oct 2010
Location: Fresno Ca
Posts: 35
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Re: Speedometer Swap?
i was thinking more like swapping in a speedometer from a newer truck like a 2010 tahoe has a programmable speedo all you have to do is plug in basically a code reader and imput your tire size and lift and it recalibrate's the speedo
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11-08-2010, 12:29 AM
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#6 |
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Registered User
Join Date: Oct 2010
Location: Fresno Ca
Posts: 35
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Re: Speedometer Swap?
anything from anyone
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11-08-2010, 02:51 AM
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#7 |
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Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Speedometer Swap?
Does a speedo like you are describing run directly off the signal from the VSS without any intervening processing?
Ray
__________________
Live more responsibly. Eat lower on the food chain. Eat vegetarians. |
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11-08-2010, 04:34 PM
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#8 |
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Too many projects
Join Date: Mar 2004
Location: Fargo, ND land of the flat hills
Posts: 1,147
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Re: Speedometer Swap?
If you buy an aftermarket electronic speedometer, it should come with a sending unit that screws into the stock cable hole. Then you drive a preset distance and push a button and you're good.
I'm setting one up in my nova right now.
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Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" |
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11-08-2010, 04:46 PM
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#9 |
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Registered User
Join Date: Oct 2010
Location: Fresno Ca
Posts: 35
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Re: Speedometer Swap?
where can i buy one of these
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11-09-2010, 07:36 AM
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#10 |
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Registered User
Join Date: Jun 2010
Location: Bucks County , Pa
Posts: 223
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Re: Speedometer Swap?
You can go with a electronic speedo and replace your cable with a pulse generator . The all you have to do is set your revs per mile for your tire size ...Thats what I am doing with 41's .
Autometer has a nice selection of speedometers . |
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11-11-2010, 02:08 PM
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#11 |
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Registered User
Join Date: Oct 2010
Location: Fresno Ca
Posts: 35
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Re: Speedometer Swap?
what is the size of our stock speedometer
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