Do the gen 3 motors use an ls1 style torque converter or do the torque converters out of the obs trucks work.

Thanks

 

The LS1 IS a GEN 3 engine.

You can install a GEn 3 4.8, 5.3, 5.7LS1, 6.0 engine into an OBS truck by using the following GM parts

If you want to install a GEn 3/4 engine in a 96-99 truck you can use the existing 4l60e by using this flexplate spacer
http://www.crateenginedepot.com/stor...2-P1343C0.aspx

and 6 of these longer bolts
http://www.crateenginedepot.com/stor...3-P1344C0.aspx

EDIT With this flexplate from a GEn 3/4 truck that used a 4l80e trans
http://www.crateenginedepot.com/stor...7-P1342C0.aspx

The 4l60e's behind the GEN 3 engines use a different input shaft than the 4l60e's behind the GEN 1(TBI), GEN 1e(Vortec 350) and GEn 2(LT1) engines so theire TC's are different as well.

peace
Hog

 

Good info, thanks.