myslowcamaro

up to 2500 hp thats some boost or one big shot n20

im sceptical of boring the walls to 4.25 with leaving the .020 until i hear a few peole running that hardcore and not killing the engine. i know other engines do that just fine, but they are not talking the power this thing is capable of.

JakeRobb

I read in Hot Rod that it's strong enough for 40psi of boost when hogged all the way out to 4.500" bores.

Bayer-Z28

IMO, I'd do the smaller bore size just to have the extra cyl wall meat for a stronger block. On the 4.25" bore, that CYL wall seems REALLY thin! -For me! Even on aluminum! I can see an Iron block, I might trust it a little more, but w/ the pressures on an aluminum block w/ the 4.25 bore and 4.25 stroke, that's a lot... Even w/ the heat of running slightly lean on F.I. or N2O... I'd like a thicker cyl wall.

But that is TRULY an INSANE bore X stroke aluminum small block! Aluminum!.....

David94TA

I guess we still have a lot to find out about this block and it depends on what you read. In the recent GM High Tech Performance article, they state that the maximum bore is 4.25 and that would be only for naturally aspirated applications. They also stated that bore still leaves a 0.200 minimum wall thickness and the block is iron, so it weighs about twice what the LS alum blocks weigh. The article just never mentioned the maximum size was for forced induction.

AL SS590 M6

LSX block is an aftermarket iron block.

JakeRobb

Yup. It's ~200 pounds heavier than the LS7 block.

myslowcamaro

did they ever hint at a price yet? they beat around the bush that its very affordable. think it would kill the ls7 sales?

JakeRobb

Block only, something like $2500. Limited availability of everything else is going to hold it back for a while.

myslowcamaro

still not bad, i imagine only the rotating assembly should be a holdup, or am i wrong? plenty out there to make a custom cam, lifters, pushrods, ported heads, use a ls2 timing set, 90/90 intake and tb, 92lb injectors, im sure thats overkill, but who knows.

i wonder if tuning would be a problem, and if you can use the ls6 pcv setup? i dont know a thing about the other sensors like the knock sensor and crank position sensor.

chuck

There will be some crazy motors built with this block.

JakeRobb

If I were building an engine around this block, I'd be buying a Fast XFI or something similar to control it.

I think the biggest holdup to making huge power with this block will be the availability of new six-bolts-per-cylinder LS-style heads that flow enough to feed a 510ci engine.

Adam Bruce

BTW in case you guys were curious, here is the video we shot on the L92 block... I must ahve been asleep at the Camera though as I missed that part about the L92 head being a bolt on 40 hp on the Ls2! DAYUM!

http://videos.camaroz28.com/video/b8...c800d7d064.htm

LT1Formulation

SDPC has these blocks listed for $1995

YBNORMEL

I just read that ET can cast in the extra bosses on there heads.

myslowcamaro

links please? i believe, just wanted to read and see.