6 speed conversion links/info please

[LSXmyford]

Id like a link or info on folks that have swapped in a 6 speed into say, a 1996 gm truck that was originally auto.....or something simillar, probably go behind a 5.0/5.7 using the stock TBI for now.

Im guessing the clutch pedal, is as easy as finding a donor truck/ part?

If the truck is automatic, will the hole for the clutch master cylinder still be on the firewall, covered with a plug or will that need to be drilled out?

How far back does the crossmember need to be moved, can the stock unit be used or will it need to be modified?

Will the 96 model year or equivalent clutch master cylinder work with the t56 or will another be required (im guessing it will work fine)? Will the 96 model year or equivalent hydraullic line connect without major drama, the slave cylinder and t56 (im again guessing it would work fine)?

Will the computer cause poor engine operation if the automatic tranny is removed? I know on other makes/models, this can cause poor idle and some driveability issues. If yes, is there a simple fix or should a computer originally designed transmission delete be used?

Will the driveshaft need to be shortened? Will another model(s) driveshaft work? Will the input shaft need to be changed?

Have I asked enough questions?


If there is a link with pix or something on a simillar swap, that would be great. I googled but came up with nothing.

I have read the old threads, there are still some specific questions unanswered to this point.

Thanks

[BSridenguy]

4L60E to T56 conversion instructions for 1994-1997 LT-1 hope this helps

[LSXmyford]

Why couldnt it have been a truck conversion.

That will actually help alot.

Thanks

[BSridenguy]

HAHA... ya.. alot of it should be the same though. If you do a little searching on LS1tech you might beable to find some more info about your LT swap for your truck. I was just thinking too, i did a 5spd to a 6spd conversion on my truck... i know its ls1 and alot of things are different, but it might be helpful as to some of the problems i ran into and what not. http://www.ls1truck.com/forums/mecha...t-56-swap.html

[LSXmyford]

It was helpful, I read your thread before I started this one, and sure to read it again.


I figured at least one person would have done a simillar swap...but where are they hiding?

[pnhigg]

I swapped a 4.3/5 speed for a 5.3/T56 in a 92 2wd.
I don't have the swap documented as such, but I will be glad to answer any questions I can.
Overall it was not that bad.
I seem to think I remember someone saying the drive shaft did not have to be shortened if the original tranny was a 4l60e (700r4 or equivalent), but don't quote me on that.
A truck clutch master cylinder will work.
You may or may not have to move the crossmember.I had to move mine a couple inches.
You will have to get the transmission functions removed from the tune, which is not difficult if you know someone with efilive or hptuners. Mine runs great, and I had Allen at Nelson Performance do all the pcm stuff so far.

It is fun jammin 6 gears in a truck.

[LSXmyford]

Thanks fellas, Ill check'er out

[r6z4o6]

I moved my 700r4 crossmember back a set of bolt holes, and gave a little clearance notch to the crossmember for the T-56 case. Drive shaft did not have to be shortened. I have a 2 piece with center carrier bearing since it is x-cab long bed. It also isnt running yet, so all that may change!!