bad6as

iTrader: (17)

600 rwhp n/a lets say threw a m6. on pump gas, not a dd

AU N EGL

Katech preppard LS7 track attack with dry sump oil system on 100 octane

Need something much beefer then a standard M6. Look to Rockland Standard for their transzille good to 900 hp or more and rockland diff too

03 BUSA

iTrader: (25)

Not pump gas.


Call LME and get their 454 with a good set of heads and fast /NW 92 setup with a nice hydraulic cam. That should be easily attained. Cam size on the one I seen but not sure on dyno #'s yet was a 257/266 on a 110. I did 570 with that cam in a 427 with the L92 setup. I would bet money there is easily 30 more in her with a good set of heads and a bigger cubed motor. That is my recommendation.

Azrael

iTrader: (10)

Ours is a 257/266 .646/.630 114+4 LSA. 11.81:1 SCR with milled TFS 245's and Cometic 4.2 by .040 thickness head gaskets, breathing through a ported FAST 90/90 and ARH 2" headers. Hoping for the 600's on motor!

Pwebbz28

iTrader: (31)

408-427 with l92 heads and SOLID ROLLER!!

transAm-98

iTrader: (1)

I'm pretty close with my setup. With some bigger headers a ported intake and an EWP i might be able get really close but it's just a dyno number. With a few more cubes or a solid roller it shouldn't be too hard as long as you don't cut any corners with the build.

CalSpeedPerformance

iTrader: (64)

I would cut the cost in half from the setups listed above...

I would go with a L92 block bored 4.100, 4.0" stroke etc 11.5:1, PRC CNC LS7 heads, Ls7 intake, large hyd roller, 1-7/8" headers, simple 600 rwhp setup.

99blancoSS

iTrader: (115)

Interesting thread.
I set out to have just such a beast built but I wasnt looking for just top end with some unbearable street manors. I wanted a true daily driver with 600+ rwhp legit.

So the bigger the better for a N/A application in this case and it isnt going to be cheap either. First thing is cubes. Need big cubes. The bigger the bore and the better. Then you need heads to support the cubes and an intake to support the heads.

I looked at an LS7 block but didnt like some of the things about them. SO then I was looking at the LSX block but it was on hold, and again just a few things disuaded from one. So I went with a sleeved LS2. 4.135 bore by 4.250 stroke and on top All Pro LSW Heads. The intake is a LS7, nothing but a Kinsler for aftermarket for them that will fit under the hood so the LS7 will do. Currently under construction, going to be pushing through a 9" with 3.89 gears. Honestly I think we're looking 625+ out of this but We'll see, My car is notorious for eating power with its heavy drivetrain.

You could breach 600 with a 440 and some TFS heads on it. Obviously the bigger the better. Is this the only way to do it? No. My guess is a LSX 434 with good heads and even a 416 possibly with a solid roller setup maybe. power is all about the head and cam selection. Mamo put down 550 with a 383.

But thats why I went the route I went. I didnt just want to breach 600. I wanted 500hp as early as I could with 500+ torque. My car is 4000+ lbs, it needs torque to get it rolling.

Azrael

iTrader: (10)

Not sure that will get you to 600, shoot I am just barely convinced ours will touch 600rwhp with a iron block 4.187 bore and a 4.125 stroke with a 11.81:1. While the LS7 heads may have slightly better intake flow they won't be able to support a big enough cam, IMHO. Where as our TEA TFS 245's fed by a ported FAST 90/90, with ARH 2" headers, will be working with a "large" hydraulic roller setup...

PaulC

To the opening poster, are you just gathering ideas in this thread? What im getting at is theres too many variables. With no limit on cost, why not just go with a big cube LSX, nicely match high flowing heads with a matching solid roller cam and high (11-11.5) CR.

SmokedOutZ28

iTrader: (35)

You have the same thinking I have, When I decide to build the 454 I want I definitely want it to hit 500+ rwtq ASAP and if it got over the 600rwhp mark N/a While keeping some kind of street-able manners through a 6-speed I would be ecstatic!

ss dave

A LS7 will get you there, and on pump gas. Check out the article in Sept. Car Craft about a well known builder putting down 730hp on their LS7 build, that surely would get you 600whp. You know what they say: there are alot of ways to skin a Chevy.

99blancoSS

iTrader: (115)

How about a link. I looked but could not find it. Found a 496 rat motor making 700..LOL

Solid Motorsports

So what's the most proven HP made with a stock bore/stroke LSX?

Black02SLPSS

iTrader: (5)

[QUOTE=99blancoSS;9536427]Interesting thread.

I looked at an LS7 block but didnt like some of the things about them. [QUOTE]

What didnt you like about the LS7 block out of curiosity?

ss dave

Can't give link to Car Craft article because I don't have it-got the mag. Car Craft (sorry July issue), ppgs. 24-25. They added a power spacer, 103mm MAF, stock 90mm TB, top secret double-throw-down cam, and 1 7/8 headers, HP tune, 11:1 Mahles, honed sleeves 4.130, ARP rod bolts. 571 tq/5,600 and 730 hp/7,200.

99blancoSS

iTrader: (115)

[QUOTE=Black02SLPSS;9543242][QUOTE=99blancoSS;9536427]Interesting thread.

I looked at an LS7 block but didnt like some of the things about them. There has been some issues with the sleeves.


So those are engine dyno nunmber then in the article?

Stang's Bane

iTrader: (22)

It is Wagner(Wegner??). It uses a carb style intake with a top mounted TB.

needadvice

Very easy.

LS7 crate engine. Change the cam, exhaust and get the heads and intake ported. Done. Over 600 RWHP through an M6, there's a dozen C6 Z06's running around here with more than 600 RWHP. 615-620 is where they all are.

If you have the cash, go for 650-675 RWHP with a 454ci with all the goodies.

bad6as

iTrader: (17)

just gathering some ideas. if there are 346 with h/c/i making 500rwhp i dont see what is holding the 600rwhp back out of bigger motors. i was just thinking about a build when this stock motor blows up, was thinking a 347 with a d1 at 14psi, or some type of all motor monster with a hit, for the i can beet 99% of stuf out there factor.

i know all the power will be made with the heads, cam and intake. looks like tfs 245's and a ported 92 intake with a cam in the 250's on intake and 260's on exhaust. but would like to save some weight if i could, mabye ls2 block bored out? not sure