Need help choosing an engine.

[Captkaos]

There is a couple of threads going on here with LS conversions:
Mine is here, although I am doing it on my spare time.  If you get a complete wiring uncut from the donor you can do it yourself.
http://forum.73-87chevytrucks.com/smforum/index.php/topic,12120.0.html

[jamesk10]

duramx wont fit in our trucks right?

[Tx_Phil]

What's that old saying?
"there's no replacement for displacement"
Or something like that?
If \ when the 350 goes out in my suburban I plan to go with the 454. I don't care to run a 4x4 suburban over 100mph so top end HP isn't a big deal. However, big reserves of torque on tab can be a lot of fun !!

[DnStClr]

I hope you're giving some thought to a new tranny too, if you go with the big block. With limited funds I'd stay with the small block and build a 383 stroker. It'll have plenty of torque to keep a smile on your face and be a little better on gas too..

[Captkaos]

duramx wont fit in our trucks right?

Anything can be made to fit.

Here is a duramax conversion: http://www.lonniesperformance.com/82chevyduramax.htm