I've got a 92 with a 3.1 getting ready for an engine swap I have 2 choices the first is a 96 5.7 liter vortec and the second is an 04 5.3 out of a running driving suburban. A rebuild will be done on the 5.7 with modifications made to fuel delivery and upgraded cam . The 5.3 is still in my suburban and awaiting my decision. I would like to retain the 5 speed manual tranny that's in the car now. I would like any suggestions on builds for these motors.ive had this car a long time and can't wait to drive again after sitting for 15 years because a poor rebuild on the 3.1 that's in it now.
PLEASE HELP.

 

It's all the same work either way.

​​​​​The T5 transmission is not very strong, it might be short lived for this world if you try to use it with a cammed 350 vortec

The truck LS engine isn't going to just drop in place. You will need a front accessory drive from a car, shorter intake manifold, and shorter oil pan.

 

I don't believe the V6 T5 is compatible with SBC or LS for that matter.

 

Well the 350 vortec is not in a car it's on a stand ready to be modified. Thus is more than likely the engine that will be used since the 5.3 in the suburban still runs just needs oxygen sensors and a battery to be road worthy. So if the T5 is not going to be compatible what would be the recommended manual tranny to use on this application. I may possibly install a turbo aswell for a bit of an extra kick.

 

If you want to keep it a manual your best bet is a T56. LT1 style for the Vortec, or LS1 style for the 5.3. You can also go aftermarket but be prepared to spend either way you go. Don't worry about a turbo or anything other than what you want out of the car and what you're willing to spend.