I read the following in another post an am considering an LS swap for my 91 street car.

"I'm wanting an LS2/LS3 and NOT an LS1/LS6 because I'd like to be be able to use the newer L76/L92/LS7 stuff to get more power in the future".

What is the difference in these engines. what are the pro and cons and potential of each. I would want to do the best I could.

I believe that I can fab or have fabed anything that is needed to include headers. I am good at wiring. I would want to keep a manual trans.

differences: displacement, wiring harnesses, heads, cams, etc.

price.....ls1 engines are half at least of a ls2 or l3

5.3L and 6.0L engines are even cheaper and could use either harness depending on year.

Any more detail??

sure look around on google, not really planning on typing out a page when it's readily available info.

No need for the info.. Provided the budget will support it go LS3 and be done with it.. specifically the gmpp ls3/480 pretty good deal, good power, mileage etc.. get the matching computer and harness, throw a t56 behind it and you are pretty much done.

some nice combos can also be seen at www.mastmotorsports.com , spendy though.

IMO to do it with an LS3 properly will take about 10k.. do you have the coin?

a real quick short list. From what Ive read is this crankshaft relucter is different number of teeth on ls1 to ls2 and knock sensors are in difrent locations. l92 usees a compleatly diffrent intake to work. I will eventualy be building a 6.0 lkq engine similare to ls1 with l92 heads and l76 intake for my swap if I ever get some cash.

Thanks guys. I was going to go look for a good donor car truck etc from junkyard.

I just dont know what to look for.

Look for wrecked LS1 fbodies, or trucks if you go the 5.3 / 6.0 route.