ok, i have been thinking about this for a little bit, i have a 98 ls1 with 150,000 all highway miles, the car is mint and the engine isnt the least bit tired. Summit racing has a ls6 conversion kit the includes heads, intake manifold, and a cam for $2,300. of course i would also have to have more upgrades to go with like fuel pump,gas lines,fuel injectors,fuel rails,long tube headers and full exhaust,etc. , that but can anyone tell me if they think it's worth it and if so the approx. power gain.

 

Not sure about the power gain but I thought that I would point out that you can get the exact same LS1 to LS6 conversion package for MUCH cheaper on ebay....

http://cgi.ebay.com/ebaymotors/LS6-L...QQcmdZViewItem

 

Not really worth it. There isn't that much of a difference b/t the ls1 and ls6. Just save up a lil more and get a crate Ls2 if you want to keep it in the company.