So I am still saving up for my LS1 swap, but since i'm going to taking the engine apart to make sure it doesnt have any problems (you can never really trust a wrecked pull out) i figure i should put some power in it while i have it apart. i was looking at the trickflow 515 hp kit. http://www.summitracing.com/parts/TFS-K306-515-460/ i am sure the guy i have helping me build it can help me find a cheaper way to get the engine over 500 horses, but i was wondering if with a top end built engine it is still possible to go turbo. or would a supercharger work better. i am not very knowledgeable about turbos and superchargers never having worked with them so any help would be much appreciated. -wes

Theres loads of pump gas street friendly boosted LS1's ( turbo or SC ) running safely in the 500-550 rwhp range. Theres braver ones who have taken a stock bottom end car to over 750 rwhp but dont expect it to last very long if you get crazy.

alright thanks... i will be starting my build post soon haha... is there are board for just full builds for an entire car not just engine?

If your planing to go with forced induction I wouldnt waste your money on any of the trick flow kits. I would rather build a good forged bottom end with low compression. Then maybe do a turbo cam or an ls6 cam also works good for boost with a wide LSA. Then while you have th heads off maybe do a quick port and polish. The heads arent going to be quite as critical on an F/I apllication as it would be on a N/A motor, the air is going to be forced in anyways. Just my opinion, good luck with it.