LS2 vs LS3

[scherp69]

So as some of you may know, I'm leaning towards doing a LS conversion in my 68 Acadian. I was going to get a motor from the states, but I found a place in Vancouver that has great prices on LS crate engines from GM. I've been looking at aftermarket parts for the engines and found that the LS2 has way more than the LS3. A few of the parts say they are for both. One thing I was looking at was a March pulley kit for it. The one kit says it will fit the LS1, 2 and 7, but not the LS3. I was also hoping to be able to use one of the Weind polished LS1 intake, but now I don't think it will fit.



What are the differences between the LS2 and LS3? Am I better off going with the LS2 for aftermarket parts? Which ever one I go with, I plan on putting in a new cam and some other performance mods. Any advice would be greatly appreciated as I don't know much at all about LS engines. Thanks.