LS Engine Swap Question to the Collective

[6D8_C10]

Originally Posted by thepunisher

I'm stuck, so I figure I'll ask the collective for your opinions as to what everyone thinks. I want to swap the engine in my truck to a modern Gen III or Gen IV motor. The engine must have a manual throttle body because I am going to be using a 200-4R transmission. The two reasons for the 200-4R is I don't have to shorten the drive shaft, and I want stock gauges. I don't want a digital speedometer, and I don't what to run a digital to analog converter to make a electronic transmission work. Besides this would be a unique combination and I like that. I have a target of the engine making 400HP.

Hey, I ended up getting a LMQ out of a 99 Silverado that was running.
It is the 5.3L. But like you I didn't not want to try and convert everything to digital. I also am doing something that everyone thinks is going backwards. I am doing the edelbrock carb conversion. I bought the engine for $600 and the conversion for $600. So I am only in at $1200 because I all ready have everything else.

I am also using a rebuilt 200-4r trans because of the same reasons.
Remember the "L" engines have a flexplate that is dipped in the center so a older trans (th350, th400, 200-4r) torque conver center nose will not reach. So you have to get an adapter so that it can reach.