you have to change the tach to a v8 tach, hook to the same place GM's tach hooks up (should be in dizzy harness)
As far as speedo is concerned, depending on t-case your gonna have to play with gears or use a VSB type unit from Superlift if you have an electronic trans

 

What tcase are you using and how did you (if you did) do the VSS?

EDIT: Just read on your 465 post that you have a 300, that is (obviously) what I have. I am just going to be running a mechanical speedo from an earlier YJ. I have the inline VSS, so I can just plug the speedo cable into that.

The other option (love to do this, but I don't have the cash right now) for me is to go with a panel mount GPS for a speedo.

 

I replaced every gauge with VDOs. Autometers would work too.

 

You can wire up all the stock guages to work with the Chevy, a buddy of mine is doing it as I type, he's using an S-10 NP231 behind his 700R4, so the speedo was a plug in, but the tach needs to be recalibrated, Dakota digital makes a setup for this, but I haven't looked at it yet.

 

Charly

I haven't considered a mechanical speedo, but i will look into it now. Thanks.

I have a Painless harness and bypassed the VSS, but still have the wiring under dash. How do you make this work?

 

Just get the Painless VSS for TBI (IIRC it's the 2 pulse version) either way, it's advertised as the "TBI version". Cost $80-$90. I got mine with the harness from Summit.

Screw this onto the tcase speedo assembly (other end allows a standard speedo cable to attach..it's technically an inline VSS). As far as wiring it's one wire to the VSS wire in your Painless harness and one to ground. I have the Painles harness too.

That simple and your drivability will improve.

 

you have to change the tach to a v8 tach

Sometimes the solution to a problem like this is NOT to just chuck out the old OEM part

Check it out:
http://www.off-road.com/toyota/tachmod.html

This was just the ticket for my 5.0->YJ swap.

Chris

 

not sure what years would be included but Dodge uses a a VSS that threads on in place of the speedometer cable.. by the way mine is a 93

 

Actually, the earlier injected YJs (I think it's the 4 cyl TBIs) use the mechanical speedo and a VSS (basically an inline VSS), but I'm not sure if it's the same pulse generation as a GM computer needs (I know some VSS's are 2 pulse, some 4). I believe it will thread onto a 300.

 

Actually, the earlier injected YJs (I think it's the 4 cyl TBIs) use the mechanical speedo and a VSS (basically an inline VSS), but I'm not sure if it's the same pulse generation as a GM computer needs (I know some VSS's are 2 pulse, some 4). I believe it will thread onto a 300.

If the documents that came with my gauges are to be believed, GM trucks use a 16-pulse-per-revolution system...

 

hmmm, maybe it's a TBI vs. TPI thing