383ss

iTrader: (14)

go to www.ls1speed.com they have a breakdown of pricing and options.
FWIW you don't need titanium valves unless you spin 8000+ and the copper seats are for FI

mikey

iTrader: (6)

We are also a dealer now for ET. I will get the web site updated within a few days with all the prices and options. I have two 347 CI motors going together now slated to get the 225 heads with 59cc chambers. I'll post results as soon as I get them.

Mikey

NumberOneSled

iTrader: (1)

For the people who want to do a Heads/Cam combo what kind of gains will they see over AFR's, Ported LS6's, etc? Could 475-500rwhp become normal with a Hyd. Roller cam and stock displacement on 93 octane with these heads?

Beast96Z

iTrader: (21)

There LS-7 heads are based on the LS-7 design. They are still a new casting that they made. The ports are just designed like the LS-7 instead of the LS-1. The intake they are working on isn't slated to be out till next year, but should be worth the wait.

52172

iTrader: (2)

could someone post the flow numbers for the ls7 head for large bore 4.125 vs the 265 ls1 head for large bore.

Beast96Z

iTrader: (21)

Here's what craig sent me on the 265's:
265cc 11° Valve Angle
Intake Exhaust
.100" 73 57
.200" 156 112
.300" 230 158
.400" 292 216
.500" 335 233
.550" 352 237
.600" 367 240
.650" 377 241
.700" 382 242
.750" 377 243
*Flowed on 4.125" Bore w/o pipe

I don't have figures on the LS-7 casting.

Craig@ETPerformance

iTrader: (1)

475-500rwhp can be had if the combination is correct. Our ported 4.8/5.3 heads of our have made 460rwhp on a daily driver. I do expect to see quite a few high 400 / low 500 cars with a stock bottom end and hyd rollers with our heads on street cars.

Wet 1

iTrader: (4)

What type of intake is it you'll be making Craig? Sounds interesting!

Cary@Perf-Induction

iTrader: (1)

we hope to have a part at the PRI show in DEC.

I don't want to elaborate too much yet. There is a tremendous amount of R&D in an EFI manifold to make one actually work right. We will let you guys know as soon as something is finalized.

IrocLs1

a guy i know just bought a set of 5.3 heads off the ape crook that he had left in inventory. bolted them on over a set of "bowl ported" ls-6 heads and lost 15hp and 20lb-ft of torque. is say they are average heads like everyone elses, not the latest trick.

Craig@ETPerformance

iTrader: (1)

That must be the guy with the Yellow Z06. I had met up with him over Dan's shop about 2 weeks ago. He knows when he takes them off we will look at them, both of us really don't know what chamber volume they are. We all know that when you take away compression the power will drop. From what I have been told the car still run pretty good on the street.

Nasty N8

iTrader: (33)

You got that right I know how much work and testing that is. It is extremly hard to beat the LS6 style intake with the space we have to work with.

I am going to need a set of these for our new big bore project. Good work guys.

Nate

MeentSS02

iTrader: (11)

Would a ported FAST 90/90 work okay with these heads? Or would it be worth it to wait?

turbo'd stang

any idea when the 245 heads are going to be avail.? It may have been posted and I missed it....there have been many threads on them.

Cary@Perf-Induction

iTrader: (1)

they are right now, but were still filling backorders for them as we speak.

Cary@Perf-Induction

iTrader: (1)

First of all, any modification to an engine is not linear. second, Taking off LS6 heads and puttin' on an ls1 head is not so much the right thing to do.I would have sent in the ls6 heads and had more porting done. If Chris told him to do that, he was not right.

Nate_Taufer

iTrader: (1)

What springs do these heads come with standard, and also what retainers? I see on the ls1 speed page the option to add titanium retainers for 400 bucks and another 150 bucks to have springs capable of .650" lift

That's a lot of dough for titanium retainers and especially a lot of dough if the springs you guys supply with 2500 dollar heads can't even do .650" lift.

Not trying to sling mud just trying to find out what springs and retainers they come with.

Nate

Cary@Perf-Induction

iTrader: (1)

Nate


I will go check that out, it's news to me.the standard hyd roller springs that come on the heads are good to .675 lift. We are using the crane 99893 dual 1.475 spring. Comp 921 and 918 are an option. Titanium retainers are standard. We cut absolutely no corners when it comes to hardware. super 7 degree locks and custom ti retainers. 5/16 5.450 long 1000 series ferrea valves. we are currently using the hi temp/inconel as the standard exhaust valve. value wise, these heads are about 600.00 under priced.

Cary@Perf-Induction

iTrader: (1)

I see what happened, being a preliminary price sheet, they did not have the notations for some of the upgrades.

just to clarify,

the stage 2 spring kit upgrade is for the comp 918 spring.

the titanium retainer 7 degree upgrade is for the Exceldyne lightweight titanium retainers and the Exceldyne super 7 titanium valve locks.

sorry for the misprint, OOPS on our part. We will also be reducing the price on the C5R and LS7 style cylinder heads.


Thanks,
Cary

Nate_Taufer

iTrader: (1)

Yeah i know how you guys do business and it didn't seem like anything that you would do as a company. All of your heads ship out with top notch components standard so it threw me for a loop.

So how much lighter are we talking about for the super lightweight titanium parts versus what comes standard.

Nate