427 LSx or LS7?

[68protouring454]

Originally Posted by victionone

I had to make the same decision and went with a LS7. The GM crate LS7 was a few thousand dollars cheaper btw. The LSX has a few extra cubes and is bulletproof. I don't plan to make 1000+ hp and the 454 LSX's aren't making any more power than a 427 LS7. The LS7 has a lighter rotating assembly, aluminum block, dry sump, and was cheaper.

are you serious? not making any more power??? on the edge of street driving, 11-1 lsx with a serious cam in it will see 700 hp easily n/a for 1/2 the price of a built ls7, and the ability to go bigger if something bad happens

[tyoneal]

Originally Posted by Sparky67

The LSx Block you can make more horsepower with forced induction. The limit is 2500 hp on the block. Here is a company that sells the short block. http://texas-speed.com/shop/item.asp?itemid=709
I believe Devious has LSX block in it.

Jeff

http://www.kodakgallery.com/67rscamaro

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I guess it's application oriented.

I like the PT/Road Race type build. 600 RWHP would be at the very top of needed. The weight difference would be a much higher selling point for me. 2500 hp is cool, but I bet the aluminum block could handle enough boost to get to 600 RWHP without breathing hard.

From my perspective the LSx 427/550hp build for $12,000 seems silly.

I'm sure there will be a few folks build 2500 hp cars with one, but I bet we don't find many on this site.

Ty