Can someone please briefly explain the difference between the ls1 and ls2 motors? I am considering doing a swap in my car and was wondering which one will get more horsepower as well as which one will be an overall better engine. I dont have too much information on these engines so thanks for any help.

 

Main difference is that the LS2 is a 6.0L motor while the LS1 is 5.7L... Both are aluminum block... Same stroke, 4.00 bore on the LS2, 3.90 on the LS1... LS2 has 10.9:1 comp ratio LS1 has 10.25:1... LS2 also has a different intake, which accomodates a 90mm throttle body... (Got info from gmperformaceparts.com).


As far as which one will get more horsepower... I have heard many times "There's no replacement for displacement." Also, to substantiate that, the 4.00 bore of the LS2 is able to accomdate the L92 heads, which have been lauded as a solid and cost effective upgrade (here's some articles on that...) In stock form it says that the LS2 makes 400hp 400 tq, while the LS1 makes 350hp 365tq... (I think though that the power ratings have changed over the years, for example, I think like the 1998 LS1 was rated at 305hp or something like that...)

Also, to a fellow Washingtonian

 

Well thank you very much! I checked out the websites and those cleared up a lot more information for me. I appreciate it. Ive heard that these are becoming more common swaps for third gen's and i was just looking into the idea myself. =]

Ah! From Washington too! Nothing i love seeing more than a camaro or bird drivin down the road. haha