427 LSx or LS7?

[rocketman]

Originally Posted by trapin

I have a friend that builds engines, Chris Uratchko is his name. He owns Uratchko Racing Engines here in Michigan. We've talked about that block in the past and I remember him telling me his disdain for it. That was the first I heard that they were made in China. Interesting that this now comes out. I'll have to show him this thread.

The cast in New Zealand, there are few blocks, cranks, rods, etc cast in the states. Donovan is th eonly block I know of cast in the states, brodix might also. But the Ls1, LS2, LS7 blocks are all cast side the states

[awr68]

Good topic guys!! I've often wondered what would be more cost effective a built LS2 like rupp's/parson's or a cammed LS7 like Scotts?

[victionone]

Originally Posted by awr68

Good topic guys!! I've often wondered what would be more cost effective a built LS2 like rupp's/parson's or a cammed LS7 like Scotts?

The GM crate LS3's will be rolling out soon and cost less than half the price of LS7's. Defintely more cost effective. Worked stock heads and a cam should get you 500rwhp easily. LG claims their cam can get you there with stock heads.

[awr68]

good info thanks!

[Spiffav8]

That is good info. Any idea on the price?

[jeff s]

Originally Posted by victionone

The GM crate LS3's will be rolling out soon and cost less than half the price of LS7's. Defintely more cost effective. Worked stock heads and a cam should get you 500rwhp easily. LG claims their cam can get you there with stock heads.

LOL, Yea, they'll be available soon, just like the 6 bolt GM heads and the stand alone ecu and harness for LS7.

[victionone]

Originally Posted by jeff s

LOL, Yea, they'll be available soon, just like the 6 bolt GM heads and the stand alone ecu and harness for LS7.

Seriously. The LSX blocks can really use those heads.

The standard LS3's are already available but in short supply. GMPP's LS376/480 and LS276/520 are another story tho. GM says early 2008 but we'll see.

GMpartsdirect has the crate LS3 for $4680 but shipping is $1000 plus a $300 core charge.

[jeff s]

Originally Posted by victionone

Seriously. The LSX blocks can really use those heads.
The standard LS3's are already available but in short supply. GMPP's LS376/480 and LS276/520 are another story tho. GM says early 2008 but we'll see.
GMpartsdirect has the crate LS3 for $4680 but shipping is $1000 plus a $300 core charge.

THe LSX is designed for the extra bolts, the block's been out a year, but no GM heads yet (you can use stock type heads, but then there's no advantage of using the heavy block since the heads will lift at 20# boost without the extra bolts)
The LS3 you talk about is a replacement long block for someone who already has a LS3 vette. No intake injectors coils, etc. Where are you gonna come up with a core? Try ordering one, my guess you need to give them a VIN # too, in order to actually recieve one.
On my own stuff I used an LS2 and have an LS3 block for another project.
However all my LS customers this year wanted an LS7s.
If you're paying a shop labor, it's still cheaper to get 650 na hp out of an LS7.
Thanks
Jeff

[deuce_454]

Originally Posted by jeff s

If you're paying a shop labor, it's still cheaper to get 650 na hp out of an LS7.
Thanks
Jeff

just out of curiosity... (partly fueled by the realisation that i cant ever run the single turbo setup (that you sold me) legally in this country) how much is the 650 hp ls7 with everything required to install it (less headers and fuelpump..) ???

[awr68]

Jeff I respect you and all your knowledge and possible insider knowledge...but why would they advertise this already if they only plan on selling long blocks? They are showing all three LS3 options including the coil packs and intake.http://www.gmperformanceparts.com/Pa...l.jsp?engine=2
I feel that the LS7 is king but some guys need an option and this LS3 in just that...if it ever is available.