LG Motorsports

First, as you all know, this is with NO TUNING.

We just did the dyno pulls with our New G7X-2 experimental Cam. We have some work to do on some details on the cam to get the torque up a bit. But here is the graph of todays run, with just a cam, LG Pro Long Tube Headers, and air filter out.

540 rwhp 489 rwtq

This is our second cam we tried, so it will be our G7X-2 exp until we finalize our X2 profile.

The car is a beast to say the least, and it still idles like a mild high performance cam at 650 rpm (stock rpm)

Thanks and feel free to ask any questions other than cam specs and my wife's age.

Thanks

Lou Gigliotti LGM

THE VIDEO with cam and exhaust switch demo:

www.lgmracing.com/lgm-c6zo6-ebs.wmv


PS, I know some will point out that some cars dyno'd higher numbers stock and I agree. We had one car in here at 468rwhp but even at that, 540 kicks butt and it does it with no tuning and an almost stock idle. LG



Before and after. dyno from stock new vs LG Cam & LG headers

Jeffvette

Phenomenal Lou

LG Motorsports

WE will not be denied. and wait till we get tuning

LG

kewlbrz

Lou, given that 7.0 liter LSx based motors have been around for years now, and the fact that the LS7 is the exact same thing, other than the heads, being pretty much equal to tuner ported LS6 type castings or the C5-R heads, is there any really new development on cams to be done at this point other than continuing the existing work? In other words the LS7 isnt really something new to work with.

Once tuning is available, wont we really just be where we are at currently with big inch LSx's? Meaning, wont tuners just start putting the known good cam grinds for 7.0 liter LSx motors?

seayzo6

**** Diesel.

LG Motorsports

Yes, and No. These heads really do flow better on the intake side than any we have used in the past. And the exhaust side has not kept up.
In addition, the intake manifold is a new question mark. So far it seem good. But where things will take us are not cast in stone as yet.

If there were tuning available we would be closer than we are because we picked the cam profile to allow for a stock idle without any tuning.
It idles at 650rpms and makes 540rwhp. When we put the car on a race track package some day, it will probably exceed the old 7 liter packages that we have seen prior to this.

we are early in the process so stay tuned.

LG will surly have to develop a new header when we get closer to the 600rwhp range but for 90% of the applications our headers are good because the exhaust valve and port have not advanced very far.

Thanks
Lou Gigliotti LGM

0Myhardtop

Wow, I always give credit where credit is due and 540rwhp is no joke my friend. You're right about the TQ; I would think it would be higher, specially for a 427ci. I've seen this happened to my cars, and found out that sometimes the cable connected to the spark plug wire jumps while making pulls and does not read TQ like it should. Maybe is not the cam or whatever...!

Oh yeah, I think that 468 pull was me, the BLK Z (Carlitos). Your car gained 97rwhp with your LT's and cam, just think what it would do to my freaky car...can you say: 578rwhp N/A w/o tune...dorn, that's unreal!

68 Yellow 468

With that kind of HP, I would not want to spend too much effort trying to up the TQ number; makes putting your foot into it more of a tire melting experience than an acceleration event.

....and after seeing those flow numbers on the LS7 head (comparable to the AFR 315's I have) I will be curious as to what the 468 ci BBC in my 68 vette will put down on the dyno. .650 lift solid roller w/ 255 duration cam. If I put down anywhere near where this motor is I will be estatic. *similar compression. good exhaust, similar cam, head flow #'s, etc.).

This LS7 series is getting excellent!!!!!

B.

cbgpe

Excellent numbers.
Tuning and some exhaust port work will in IMHO produce some incredible numbers .....
The only question I have is when can you use the extra power ....My C6 ZO6 is already traction limited in cool weather all the way thru 2ND
What will another 100 HP do will we have cars that are trction limited in 3rd???

zuluracerx

Fricking amazing work and contribution. When can we hear it in a video of sorts?

LG Motorsports

video maybe tonight.

My son is editing it at Purdue as we speak.

LG

LG Motorsports

In a way, not getting the torque we expected will help that. As you said, these cars need traction, and more torque won't help that

The hp up high is usable but we want to bring the peak power rpm down a bit.

Thanks

LG

LG Motorsports

The video may not be up tonight. They are working on it late tonight and tomorrow morning, trying to make a good presentation.

Thanks

LG

0Louis @ LG Motorsports

Slow computers and Graphic work

It will render over night, and be up in the morning

415LT5-badZR-1

Does anyone else know what this means?


Anyway - fabulous numbers Lou - one question though: I noticed that the power drops off after 6500 rpm, even with the long tubes in place. This was a problem in the LT5 until the long tubes are installed, then the power holds strong till 7500 rpms or higher depending on the cam.

Do you think that with tuning, the power will peak at redline?

Good job - keep up the good work!

LG Motorsports

We cammed the engine to pull the power down away from 7000 to give more reliability. Remember it is still a big block and 7000 is not that user friendly.

In fact, the actual peak power comes in higher with this cam than the stock cam as seen on the before/after dyno sheet. it is normal for an engine of any cu in or design to fall off after peak power. Usually determined by Cam, valve trane, head flow etc.

I for one will want my power to peak no higher than 6600 unless we were doing a full race package where I would max the package out as high as we could.

Also remember that this is a "No Tune" cam and that means that it is a baby cam compared to what this engine will eventually like.

Thanks
Lou G

Webfoot

Great work, Lou. This is exciting stuff and we are only at the beginning!!

kewlbrz

For the purposes of clarity, it's still just a small block. Just a bored and stroked LS1/6.

A real 427 big block gets it's displacement from more bore over stroke, then does the LS7 small block. So in essence the side loading of the big block would be more condusive to more rpm than this small block would be.

LG Motorsports

the thing we worried about was the reports of valve trane issues, so we opted toward lowering the curve. But we still need to help the bottom rpm range more as we try more cams.

the other neat thing here is that the internet has allowed everyone to see progress as we go. That means you have seen the good and the bad. In the old days, the info cam out slower and only the final results were sold to customers.

Now you all get to watch the progress each step of the way, because we tuners all want to show what we are doing along the way.

thanks
Lou G

415LT5-badZR-1

Thanks for the explanation Lou - your reasoning makes perfect sense. I do appreciate that this is without tuning, and I agree - no need to dance with 7000 rpms unnecessarily - esp. if the valvetrain issue proves to be more than a nuisance.