Auto to 5 speed swap questions

jersey s10 · Jun 21, 2009

So my trans crapped out Sunday night.

My truck is an 02, 4.3L, 2 wheel drive with about 94k on the clock, and I had it rebuild under warranty at the dealer at 30k. I wanna swap about the 4L for a 5 speed but I have a couple questions.

First being, is the tranny crossmember for an auto and 5 speed the same or will I need a different one?

Second, obviously the 4L is computer controlled shifted, can I leave the computer in and deal with a MIL light, or will I need a computer out of a 5 speed truck?

Third, will the bellhousing bolt up to the 5 speed, or is there some kind of difference between the two?

And forth, the lengths of the trans are the same right? I won't need to get a different drive shaft if I go for a 5 speed will I?

I think that's about it. I'm hoping to get this started later in the week. Any help or information would be greatly appreciated.

Thanks.

Twin-10s · Jun 21, 2009

i pulled a trans cross member from my 5 speed and a buddy's auto and they were the same.
if you can find someone with a 5 speed truck with all your same options sure can have your comp flashed with that vin#
not sure on the driveshafts.
if i was going to go through that kind of swap. i would do a t56 6 speed instead. the nv3500 that come with the 4.3 trucks are not that great really. :rant:

jersey s10 · Jun 21, 2009

Thanks for the info man. Trust me, I thought about the T56, but this swap is already gonna set me back some. I can't afford to be set back as much as I seen T56's for.

Tim99Zr2 · Jun 21, 2009

no you dont have to change the computer. i did this swap. the hardest thing about this swap is putting the clutch pedal in. i bought a 5spd s10 to get the parts from it. mine is 4wd and my lengths were fine. it bolts right up to the 4.3 after you put in a pilot bearing, flywheel, clutch, pressure plate, throwout bearing.

s10-den · Jun 24, 2009

Didnt you say that you didnt plug up your speedo and some other stuff though?And do you have any check engine lights on?If not you are lucky.

jersey s10 · Jun 22, 2009

Cool, thanks for the info man.

Tim99Zr2 · Jun 24, 2009

no i didnt plug the speedo in, i think it runs off the tcase anyway. for us 4wd guys. and i have the check engine light, although it could be from many different things. i dunno what codes are thrown

Auto to 5 speed swap questions

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