Well i am looking to make serious hp and torque. Like some where near 750-800 rwhp. I have talked to a guy at a website. He said that i can obtain that much power street legally and pass inspection by buying a 427 cu in LS2 block. He said it comes with about 550 rwhp stock and i can add NOS onto it to achieve the 750 rwhp range easily and it would cause less ware on the engine. He also mentioned that i could buy a low compression LS2 427 for less and add a charger of some type to achieve that. I gotta admit, it would seem nice to tell people that i have a 427 cu in LS2 under the hood and the engine itself without power adders is making 550 rwhp. If thats true. But i would miss having the LS1 engine. Its been good to me. But it would cost me more money to fix my engine up to handle the stress of a turbo than it would for me to just buy a completely new block that would make more power to begin with. In essence, i would be starting from a higher point. What do you guys think? Is it a oood idea? Also, you think i should go with the 427 Ls2 that already has the 550 rwhp and just add nos or get the low compressioned 427 and add a turbocharger? I'd love some feedback.

 

By the way, Its a 98 z28 LS1 camaro.

 

that's one expensive dream u have there. you're better off rebuilding your LS1 with lower CR, upgrading ur fuel system, adding a turbo, beefing up your transmission, replacing your 10 bolt, upgrading your suspension. whats your budget? I dont think an Ls2 is a cheap engine to begin with.

 

There are a few simpler and less expensive ways to arrive at that power level.

A built 347 for boost as mentioned above could handle well more than 700rwhp is set up properly for a turbo.

Also in the LS2 area you can do a 402 without having to re-sleeve the block, which I would personally reccomend. We have had great success with these set-ups.

 

why not an iron block? tbryne sells the slp zl402 cheap. i've heard all the neg about slp, but i thought there work was good. i suspect most of the early problems posted were install errors and most had nothing to do with the short block assembly. mine has a real mild cam (ss3 from speed inc) it has great street manner,but when you hit the gas it'll melt the tires.clutch can't hold either waiting for my twin. than i'll have dyno numbers na and squeeze.
matt