Jump to content

Engine Swap In A 1992 S-10 Tahoe

bcoop713

By bcoop713
in Ask A GM Technician

Recommended Posts

bcoop713 New Member

bcoop713

Posted
Posted

I have a 1992 S-10 Tahoe 4WD 4DR original engine was a 4.3 it now has a 350 and transmission from a 1992 C1500. I'm having trouble with the speedometer only showing 1 mph when I'm going 20mph, 2 mph for 40 mph, and 4 mph for 60 mph. I know that the original transmission sensor was probably on the transfer case not the trans housing. I just purchased the truck and am trying to find the best solution to fix the gauge so it will read correctly. Could it be a sensor between the dash and trans, or could it be that because it was 4WD and is now 2WD that it could be incompatible with my gauge cluster? I'm not a mechanic by anymeans so any help would be great.

Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

You'd probably be better off contacting these guys: http://www.transmissioncenter.net/performance_automotive.htm

 

This forum is more for factory stock OEM questions.

 

There are color coded plastic gears in the tranny for the speedometer drive -- they have to be the correct ratio for your truck. You'll probably need to know tire diameter & rearend ratio before calling. That place has everything you need - they specialize in overdrive transmissions.

 

EDIT: If you scroll waaaay down that page - about 3/4 the way down, there's a speedometer gear chart plus a speedometer gear calculator. That should get you what you need.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      Grumpy Bears 2015 Silverado 2WD

      By Grumpy Bear · Posted

      Notes 7/18/2026   3,400 miles on this batch of Mobil 1 Euro 5W40 since the GDI pump replacement. Alcohol runs very clean when ring seal is tight and the sump isn't getting hosed with fuel. Checked oil level at fill up today as is my practice and grabbed a white Kleenex to look at the color. What color?  I was going to change it but.....  
    • Another JR
      2 speed transfer case optional now?

      By Another JR · Posted

      4 low is really nice on steep boat ramps. 
    • Chuck FB
      Gas Prices

      By Chuck FB · Posted

      Interesting, I suspect I would have fueled up in Lee Vining as the day prior I would have filled up either in Laughlin or near there and maybe again before I entered Death Valley and once out the other side late that evening as I kept on driving into the night up near Lee Vining. Next morning I most likely fueled up in LV before heading over Tioga Pass into ( as I refer to it as "Yose .... Mite" 😁 ). And again that was 19 years ago but the price then must not have jumped out at me like the 5 bill a gallon theme of nutty cult hippy country Big Sir or head so far up their rear Aspen. I'd be curious to know where the highest prices are in the lower 48, I probably would not be far off to guess somewhere in Cali forn ie. Coldfoot and Prudhoe bay may have those prices beat but that is a whole other world up there and when prices are more normal elsewhere that is about what they can be up there I believe in no mans land. Anyway interesting that the 395 corridor is hosing people and the thing is, its tourist season and its not like there are a lot of competition options when driving up that highway from what I could see. Yup, big ole Boaterhomes and various other RV's ahead and behind me at the Yosemite entrance gate and they have to get their fuel somewhere.  
    • Atlas
      Gas Prices

      By Atlas · Posted

      Those can be high, as well as the big California cities. The ones that will pop your eyes out are the 395 corridor on the Eastern side of the Sierra Nevadas. Lee Vining, $7.19 for regular and $8.89 for diesel is what the Google said right now.
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Correct.  2019-2021 model years are serviced by a different p/n.  19420611.  Recall 2021s use 19420611.   The recall engines 2022-2024 model years are serviced with 12740076.     The difference between 19420611 and 12740076 is GM changed injector size for 2022.  The injectors are smaller on 12740076 with smaller injector bores in the cylinder heads to match the smaller injectors.  So you can't install a 19420611 in a 2022-2024, and you can't install a 12740076 in a 2019-2021.     Both engines are the replacement engine p/ns that are in the L87 recall.  So both of these are the updated engines.     Here's a version of the L87 recall with the p/ns for all the parts needed.    RCRIT-25V274-7075.pdf   Note it shows 19420611 and 12740076 with an asterisk to a footnote "Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which part to order if two or more part numbers are listed for the same part, as it may vary by vehicle options."    

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...