Chicago Crew UnderBoss

iTrader: (1)

454 BABY with a 4.250 bore and 4.00 stroke!!!

Count me in on the LSX I am ALL OVER THIS and probably will go with a tall deck and a perfectly square 482 cubed motor (4.250.00 x 4.250.00)!!!

tlaselva

Now ur talking my language! Big Cubes!

No replacement for displacement!

Now the issue of finding an intake that's streetable and able to feed that much cubes! I'm going to pay close attention to the Wilson Intake comparo that some tuners were talking about on another post.

Robin L

That is correct. Right now though they are concentrating on getting the Iron version out.

Robin

Phil99vette

iTrader: (11)

I'm not sure I'd max out the bore, what does GM say the wall thickness is when the bore is maxed out @ 4.250

NemeSS

iTrader: (127)

advertised as .200 material left between cylinders,

im going strait for the jugular on mine
4.25 bore x 4 in. stroke 454
12.5+ SCR
400+ cfm LS7 heads
single plane GM LS7 with plenum and 105mm tb

if there is not too much of a time delay for the block availability

verve_v

You can go as big as 511 cubes on the tall deck version can't you? Even if you can't though, holy ****, it will be one badass small block.

texada

iTrader: (3)

How do you think the L92 heads & Intake will work with that big of a bore(4.250)?

Cop Car

iTrader: (14)

poor. if you have a bore of 4.125 or more you need to be using LS7 heads.

koolrayz

iTrader: (26)

Will we see the aluminum block this year?
when are they going to anounce the LSX heads that go with these new blocks?

texada

iTrader: (3)

I am wondering how that can be when L92 heads flows equeal to alot of aftermarket heads. So, are you saying AFR, TFS or Eldebrock heads wouldn't do the trick for these big cubic inch motors

Beast96Z

iTrader: (21)

Reports claimed .200" at first, but 4.4" bore spacing minus 4.250" bore ='s .150". Personally, I wouldn't max it out on the first go round. I'd say 4.200" on the first pass.

Top Secret

These blocks are going to be great. I'm honestly a little worried that GM is going to run into supply problems in the beginning. Also, I like how much material is between the cylinders... it makes for a lot of rebuilds.

Cop Car

iTrader: (14)

no, most aftermarket heads arent near as good as the GM LS7 heads. the big bore, allows for big valves, and the chamber is shaped diffrently, square ports instead of cathedreal etc. the L92 is a way tamer version of the LS7 head, and GM LS7 heads come CNC'ed. if you have a 4.125 bore or bigger there is no excuse for not using either GM LS7 heads or something like the warhawk or other LS7 heads

Beast96Z

iTrader: (21)

Assuming your shopping based on price, that's true, otherwise, there are better options IMO.

Gordon0652

iTrader: (4)

You can get 511cu out of the block, and it will always stay a small block. I called GM preformance and i asked when they were going to relise the block and nobody had any idea, i was transfered to like 5 people (no joke!) and they never even heard of it, they though it was in a stock Firebird 98-02' and i was like wtf, NO. So they were no help, any idea when it is going to be relised? and since the block does weigh 218.* pounds will that make a huge diffrence in handeling since an AL block weighs about 95-105 pounds.

Stang's Bane

iTrader: (22)

I do agree somewhat with you Beast. However, I would llike to see a set of the All pro ls7 hooked up to a sheetmetal with a solid roller and see what that does.

IMHO the biggest thing a budget brings into the equation is the intake. To me, it is a lot easier to spend $3K+ on a set of heads than the same amount on an intake. that is just ME, though.

FWIW when you get your setup running and ironed out, I think we may see a new NA pump gas record for the LSx. IMHO 650+

JPH

iTrader: (2)

i'll take one.

Beast96Z

iTrader: (21)

Yea, the intake is always hard to drop money on. When we start getting some ported LS7's out there, it may be hard to compete. Seems like not to many people have been going that route latley. I kinda wish there were a few more results myself. As for my car, yea, 650 is sounding nice. anything over will be stunning.

ls1muscle

iTrader: (16)

Beast96Z,
When is your car gonna be done, that setup is nasty.

Beast96Z

iTrader: (21)

K-member shipped yesterday and valve covers will be here within 2-3 weeks hopefully. I would like a early March crank up myself.