did some searching, found a few posts about them being used in the ecotec. it was mentioned that pj was running these cams. well i emailed them last night to see if they even had a profile for the ld9, and it turns out that they do.

they are offering what they are calling a "strong street grind" that they have seen up to 28 hp to the wheels in gain. they are asking 550.00 for the pair.

now that all looks good and all, but my question is, has anyone played with these in the 2.4l? from what i have seen about the ecotec, i will probly go this route anywho, but.... just wanted some input, and to question the masses....

its LZM, they can grind pretty much whatever you want. problem is they are re-grinds not actually a completely different cam so profiles are limited.

they also offer a turbo grind for the LD9.

oh really... a large difference in the grind from the one they mentioned to a turbo grind?


the origional plan was to pick up a set of cams for the build on the motor when i get the cash right for the turbo.... but i was thinking about it, and i would LOVE alittle more power before i go all out and boost her.

z yaaaa wrote:its LZM, they can grind pretty much whatever you want. problem is they are re-grinds not actually a completely different cam so profiles are limited.

they also offer a turbo grind for the LD9.

They offer a turbo grind now?? I emailed them several times on what their SC grind was and no response so far




Jason
99 Z24 Supercharged
157hp/171tq - NA
LD9 for Life

by the way, i just saw, you said they were from lzm????


the company i found them with is colt cams

well sh!t... yeah, i was talking about LZM, never heard of 'colt cams' before... more info?

jason- yeah man, they do. they answered my emails real good, talked with someone once every day for like a week about the turbo grind stuff.

here's all the info i got...

z yaaaa wrote: Hi I am just wondering if you are no longer selling any 2.4L Twin Cam camshafts for the GM engine? I remember seeing that you had some available a while back and I was looking forward to buying a set of the Stage 3's.

If not is there any possible way to have a set made and if so how much?

Thanks.

LZM wrote:Yes we can still produce them, we simply don't stock them do to a limited demand. We offer two profiles, the Stage 1's and the Stage 2's. Honestly the Stage 2's are your best choice, they are as close as you can get to a race cam while still being streetable.

Price is $499 for the cams shipped, plus a $100 core charge unless you provide cores in advance.

If you have any other questions please let me know.

Clayton
Level Zero Motorsports

z yaaaa wrote:what are the spec's on the stage 2's?

LZM wrote:Hi Brad,

INTAKE 260* duration, 377 lift
EXHAUST 268* duration, 375 lift

Cheers,
Clayton
Level Zero Motorsports

z yaaaa wrote:hmmmm i am just fine with the duration specs but the lift is a little low for what i was hoping... im going to be turboing my car in the future and want some pretty big cams.

these would be re-grinds, correct? if so... would it be at all possible to maybe have the lift bumped up to say .390 for the intake and .388 for the exhaust?

if not thats ok, i'll probably still be getting the one you do have available. do you think they would be good for a turbo engine?

also, if they are re-grinds what company is doing them for you guys? or do you do it...?? or???

LZM wrote:Hi Brad,

Yes they are regrinds. We do not do them in house. We use a local cam grinder with 25 years in the field as cam grinding is a specialty and requires specific machines. I will talk to him and see if we have a profile with a larger amount of lift as well as an appropriate profile for a turbo application, I know we have one turbo profile but it does not have the lift you are aiming for.

These would not be ideal for a turbo application because of the valve overlap. Overlap is what helps increase the scavenging effect on a NA motor and results in the power gains. On a forced induction application this is not ideal because the intake charge is actually pushed out the exhaust side while the overlap occurs. Normally you can get around this with the use of adjustable cam gears but last time I looked there wasn't a cost effective cam gear for the LD9.

z yaaaa wrote:wow, im glad you cleared that up for me as im not too knowledgeable when it comes to the overlap stuff and turbo application. i certainly would not want to put a set in that's going to work against my goals, so if you do have something that work be more aimed at a turbo application i believe i would want those anyways.

what kind of lift DOES the turbo grind you have available have? exactly what are the specs i mean...

and yes i would appreciate you asking about the grinds for me, if i could get a custom grind with a decent lift increase as well as having them being turbo specific i think that would be best. i do have a flow benched ported head as well as a venom intake manifold and port matched to the head turbo manifold so the breathing situation has definitely been thought out and taken care of so i have something to gain by having nice big cams.

thank you and i appreciate all your help.

LZM wrote:The specs for the LD9 turbo grind are:

Intake: 268 lift 375 duration
Intake: 260 lift 375 duration

z yaaaa wrote:did you ever find out if they could do a turbo grind with a little bit more lift?

thanks a lot for your help.

LZM wrote:Hi Brad,

I was talking with my grinder about it and he said it's not advisable due to needing to reduce the base circle to the point where the hydraulic lifter wouldn't be able to compensate, and not being able to shim the lifters.

We were also discussing the powerband doing so would create and came to the agreement that too much additional lift/duration is going to delay spool up to the point where it's only applicable in a full race (sub 10 second vehicles) application due to the loss of lowend power.

Clayton
Level Zero Motorsports

z yaaaa wrote:ok then, i will end up going with the grind you have available. eventually i mean...

i just hope you guys have them available for a while longer so i can come up with the nessesary funds.

would just regular stock 2.4 lifters be ok, new of course...

thanks again for your time.

LZM wrote:Hi,

We'll have the cams for years to come so no need to worry. Yes stock lifters will be fine.

Clayton
Level Zero Motorsports

did a few searches, found a post by "coldairintake" and he used these cams in his build, and claims they are the same cams that LZM is selling... is this true?

Brad, these are the ones you were telling me about in PM's a while ago? Damn, they seem promising.. Id like to see dyno numbers before I drop half a stack on them first.










~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

yeah. i shot them an email with some more questions. havnt heard anything back yet. will keep everyone posted.

yep, that they are man. they really arent that far off from the secret cams, just a lot more duration.

Where do these cams put the power band? What is the power under the curve like? Streetable? How is the idle?

That's why I'm just going to have my W41's modded for the ps hex and cam position sensor that way I'll have plenty for my turbo hybrid.

While you may laugh and feel this is a VERY skewed opinion...

2 years ago when my engine was in the shop with Mev, he had 3 dyno sheets tacked to the board behind his desk. Not out in the showroom - behind his desk. I asked him what they were and he told me 3 separate LD9's utilizing TRIFLOW cams... I forget who cuts his cams... I think it's Comp camps or Colt cams... can't remember.

What blew my mind was not the horsepower increase, but the powerband.

The bowerband was increased right across the board... no other mods done... power gain was from sub 2000 rpm all the way to just over 6000 rpm (limiter).... the ENTIRE powerband was beefed up!

Power gains? 21 hp, 22 hp, and 22 hp. All wheel horses.

Now.. I know I'll get called a liar and ppl will throw the BS flag and that's fine, I'm not endorsing his cams or his #'s... just telling you what I saw. I am now running these cams (modified profile) in my car and honestly... they feel great, even at ridiculously low compression. My idle has a very slight "blurb" to it every 5-6 seconds. Anybody at the bash can come up and ask me to start the car and I'll let it idle for you and you can listen to the exhaust note. Far from lumpy.. just a nice off-beat "blurb" that hints that something's going on under that hood.

The benefit to tri-flow cams is supposed to be that they give you power gains across the entire powerband - no need to sacrifice low end for top end. HOW it works... I sort of get it but can't explain it... I am not technical in terms of understanding cams... but lets just say I like them, and I saw with my own eyes 3 dyno results. I even spoke to one of the owners, and he told me flat out he ran up and hugged Mev when he saw the # come up on the computer. He couldn't believe the gains that the cams gave him... just blew his mind.

That's my story. Take it as you want!

-Chris-



-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...