willsctsv

I had an unfortunate incident with my Z06 and sent a rod through the block. After disassembly it appears that a valve dropped on the #8 cylinder and cause a catastrophic failure. Too bad the engine was a screamer with an LPE cam package.

Nothing salvageable except one head.

Now the new engine... Let me know what you guys think here..
The engine is set up for road racing and will be a N/A screamer.

New Ls7 block with a 4.00 Callies crank, Manley H Lite beam con. rods
Mahle coated pistons 4.130, a slight bump in compression(11.8-1 estimated)
Clevite bearings
Plasma molly rings
Precision honing with TQ plate and balancing
4x cam
Stage 4X LS7 heads, ported, comp 921 springs, seats, Titanium retainers, milled .030
Hardened pushrods
Port intake to stage 4X
new Z06 oil pump set up( had to scrap the old one due to damage from metal)
New timing chain and gears
new oil pan and pick up
Morel Lifters
60lb injectors
assembled and installed

Want to make some hp/tq guesses????

My cam only set up with no head work, headers and intake made 528rwhp amd 480rwtq.

I'll try to get some pics and keep you updated on the project.

325trooper

iTrader: (2)

That's gonna be bad ***. I'd say upper 500's easy.

willsctsv

I'm a bit surprised more people did'nt want to make any guesses on HP/TQ??

I thought this was a sick build up, I guess it's really not that interesting...

Stang's Bane

iTrader: (22)

It is a really sick build. It will scream, no doubt. I would say 600-620 at the tire..

willsctsv

Thanks for chym'n in here. I hope your right. The Cartek guys are down playing the #'s. I would be extremely happy with a 600RWHP#.

needadvice

what intake?

LS7 intake, you won't make 600 RWHP. maybe 570 RWHP.

Stang's Bane

iTrader: (22)

Need to look around. It has been done more than once.

Why wouldn't it be possible?? There are several setups out there now making over 600 through a fast and the ls7 intake will move much more air than a fast.

dailydriver

It is VERY interesting to me!!

This is exactly what I would do if I had the coin, and Cartek would be the one's building it for me!!!
I do not even care about drag racing any more, so I would also tell them to build it solid, capable of high revs, with a BIG, FLAT (as possible) power band.
Since I would never, ever, EVER spray it they can build it up as light as possible, internally.
Also since it's for road racing, I'd never use forced induction either, so they can bump the compression up fairly high as well (to the outer limits of pump gas with tune).
Dave and Julio rarely brag about peak power, but their engines always perform quite well and last. No matter what form of racing they were built for/used in.

s346k

iTrader: (4)

in all honesty, i'd REALLY hope for more than 600 whp. after seeing the "all bore 383" dyno, dude put down 550 whp through a 4k stall and th400 i think. using 225 heads and a 240s duration cam. haha i'd really hope you could do better for the 3x amount of money involved.

faust.dr

iTrader: (1)

We have a similar engine combo in one of our shop vehicles. The LS7 intake is ported, the LS7 heads have some work done, mainly on the exhaust side. The combo made 585 rwhp @6600 uncorrected with full exhaust. The cam is about 250 int /260 ext duration at 0.050" with just under .650 lift. This was done with stock injectors.

willsctsv

So far so good. I know Julio and Dave are more about performance than actual Dyno #'s, but I know how my car felt before the failure, and it put down 528rwhp/480TQ and I ran a 11.1 on street tires at 131mph. I just did the 1/4 with a friend who rented a track.

However my passion is in road racing, and maybe a little sunday morning trip to a popular meet and greet.

I was going to go 454, but for high revving road race applications, Dave advised not to go that route. The redline should be 7200rpm.

sickss228

iTrader: (27)

Badass motor, you picked the right guys to build it too. From my experience with Cartek is that these guys are hardcore about track performance. They, nor I care about the dyno numbers. Well I should'nt say "don't care" they just don't brag about them, they let the cars they put out speak for them. Good choice

Max@Cartek

Some things working against us are the uncertainties of how much more the after market rear brakes and rims weigh? You are going to use up more power to spin these components than if the stock pieces were on that weighed less. For example if two cars that rev up to 7K rpm making 600 flywheel HP each were built and one has an aluminum flywheel while the other one has the stock flywheel, the aluminum flywheel car will out dyno the other car by about 10 rwhp. The other things working against us are the LS7 intake design and the car is going to be used for road racing so a more conservative tune has to be done to accommodate for the sustained high cylinder pressure/temperatures seen on a road course. Camshaft profile is not as aggressive for a road race engine as well (lift, ramp rates, etc). Finally steel rods are being used, very lite ones at that, but still not as lite as titanium rods. This is more mass to accelerate which will take up some power.

I know we down play the power, but we don't ever want to over promise and not deliver.

We are working on this engine as hard as we can and treating it like a work of art (as all of our engines are treated). We will give the most you can get out of any given combination reliably, but I wouldn't get hooked on a dyno number. Track results are where it is at.

We are going to deliver an engine that performs excellently and will be around for a long long time to enjoy.

Max

1.8t

What exactly caused this to happen??

willsctsv

Thanks Max. I know the engine will be top shelf and perform flawlessly steet or track. Now tell Callies to hurry up with the crank.. I'm getting anxious!

Blktie8

iTrader: (1)

640 bhp
580 tq

Minus your percentage for drivetrain loss

I am building a LS7 etp heads

The stock LS7
makes 550 bhp with headers

The cam and porting 90 hp would be a lot.

My cam small 236-246-116-116-600 lift
I am hoping for 500 rwhp thru the A4
Probably more like 480.
Take it to the track ,that tells it all
John

sidewayz28

iTrader: (24)

pics would be nice.. wish i had a motor like that

willsctsv

I think this motor will make a bit more power than that. I already had an LPE cam package, no headwork, no ported intake, stock bottom and made 528rwhp/480rwtq..

sdimess84

iTrader: (4)

That thing is going to scream. I am going to guess 575-590 RWHP

1.8t

Do you know what caused this?