ACR Z06

I'm very close to purchasing a set of CNC Ported Stage 2 GM LS2/LS6 Cylinder Heads from Livernois Motorsports and a G5x3 112 LSA cam from LG.

Will i have to fly cut the pistons with this set up? I have a 04 Z06 if that helps any. Thanks In Advance.

P.S. I just found this site, there is some great info on the LSx engines, i have alot of infomation to collect from this site.

Patrick .

CodeName Z06

I am on the same boat you are, but i am half way through my cam and head install and should be done next week. I just need to port the heads, cam is already in. Though i am using the stock ls6 heads and porting them, i called LG and they told me i could run a .04 cometic gasket with the G5x3 cam on 112lsa with the stock heads, so you should not need to fly cut.
You could always wait till next weekend and see how my install goes, i will report back once i get her tuned and dynoed.
PS
My complete setup should be LG Pros, G5X3 112LSA, ls7 lifters, ls2 timechain, 25% powerbond pulley, and ported LS6 heads with PRC dual springs.

ACR Z06

Thanks for the reply!

I would greatly appreciate the progress on your heads and cam install. I'm looking to get this setup going a.s.a.p. I e-mailed LG saturday and haven't got a response yet, hopefully by tuesday.

Thanks, Patrick.

Cascazilla

Definitely keep the LG cam, but Linvernois heads?

ACR Z06

I want LS6 CNC Ported Heads, If there is a better vendor with these heads, im all ears.

I know AFR's are one of the best, but i don't really want to spend over 2,200 for a set of heads, if i get 450+ RWHP with LS6 ported heads, i'll be happy.

SLP4CamaroSS

iTrader: (16)

stock head stock gaskets i measured my ptov and it was .070/.110 they said people recommand .80/.100 so i didnt flycutt. hope this helps you guys out i think you have to flycutt if you got the heads milled or used thinner headgaskets. livernois are good heads seen great results out of them i was goign to go with them but me being in college couldnt afford it

lilbuddy1587

iTrader: (1)

You need to flycut. The X3 on a 112 is right at the bare minimum saftey clearance specs. Add in a Stage 2 head (most likely milled and larger valves) with thinner head gasket and you're looking for trouble. If you decide not to flycut, please be sure to post the pictures after the damage has been done so we can have another fine example of WHY you should flycut when it comes to combo's like this. Good luck man

88ls1blazer

iTrader: (1)

well I know livernois can build them without milling the heads, and they use production size valves so if the cam is desined to fit on a stock head then it should fit on a livernois head.

As tell everyone I talk to, check it anyways, hell I check stock cams on a stock head just to make sure i didnt f' something up.

I definately vote for running the stage 2 livernois head, great product and an awesome price. I have talked to Dave (in the cylinder head dept.) there many times, and watched him work, he's a mad man when it comes to head porting

ACR Z06

Thanks for the replies everyone. I'm really on the fence here, i'm going with the Livernois heads because they are ported GM LS6 stock cores and i heard the G5x3 '112 LSA can be used safely on stock LS1/LS6 heads, please correct me if i'm wrong.

I was just going to do a cam swap with a Comp Cams 921 Kit, but then decieded to atleast get the LS6 Heads ported while i'm at it, if it is not safe with the setup im looking at, i will just stick with the stock heads for now.

I don't want to start messing with the engine itself, that's why i don't really want to flycut. I just want the bolt on mods as of right now. I really like the sound the G5x3 makes on a 112 LSA and the power it makes, like a C5-R (minus the 427 of course) .

I listen to this video on youtube almost everyday, even though its not a LG cam, it's pretty close to a G5x2:

Corvette C6 Cammed! http://www.youtube.com/watch?v=ud0hZ...elated&search=

Thanks, Patrick .

88ls1blazer

iTrader: (1)

if it is engineered to fit on a stock head, just let livernois know you dont want them milled (except for a cleanup), it would fit as well and be worth a decent bit of power too

Vette-Red

iTrader: (1)

I have a 238/242 .609/.615 cam on a 111lsa and I just installed the fast 90/90 and a set of the TSP ls6 stage 2.5 heads milled to 59cc's and had to flycut.

N4cer

iTrader: (11)

Livernois Stg. 2 heads, G5X3 112 in my sig.
I love it. But I certainly wouldn't install without milling and flycutting. Why give up all that free power? It makes no sense whatsoever.

JRracing

iTrader: (35)

I think the livernois heads are great. But I went a head and shelled out the $ for the AFR's so I would never have to look back. The x3 cam is awesome to. I had a 234/242 .591/.601 on a 114+4. I liked it BUT the power didnt really come on until about 4000 rpm's. Maybe due to the lsa.
I ran 5.3 heads with that cam, milled to 58cc's and a stock size gasket. I had to fly cut the **** out of the pistons also due to the lsa I think. I went a little over board .155" on int and .145" on ext. So I wouldn't have to do it again for the next cam which is a 236/236 .591/.591 110 lsa.

You will be happy with the parts you have listed.

PREDATOR-Z

To answer the post:
X3 on a 112 will fit stock casting ported heads only and only if:

Stock valves
Unmilled
stock gasket

Anything else is below safety margins, 112 X3 is allready very tight, like around .065>/070 on intake (Street speaking of course)

ACR Z06

I was just looking for a cam only, but i said "what the hell might as well get the LS6 Heads ported".

I'm not looking for crazy power, if i was i would just do a whole engine rebuild starting with a C5-R 427. I don't want to go to crazy, because i would like to pick up a C6 Z06 in the future.

If i can get 425-450 RWHP i will be happy.

I'm now looking at the MTI X1 cam, it sounds wicked and i can use the LS6 heads with upgraded springs without a flycut. It's either an MTI or and LG cam with ported LS6 heads.

Again, Thanks for all the help .

hammertime

iTrader: (1)

Fellow GMMG owner, looking to go H/C later with QTP's. Any video/audio of that setup?

sorry for the

N4cer

iTrader: (11)

To say "I'm not looking for crazy power" is just silly. If you don't want to get the most bang for your buck, don't change it. Put a bottle on the stock setup and have a ball.

04gtod

iTrader: (3)

I have Livernois Stage2 with .040 gaskets and the biggest cam I can do is 228/228 112lsa .571 lift. installed at 112icl. PTV is .082 intake/ .125 exhaust.

CodeName Z06

I just measured my PTV and its .07 intake and .134 exhaust with the G5x3 112LSA with a .04 cometic. Is this to close enough to be safe and should i flycut?

PREDATOR-Z

It is safe if your measurements are accurate