from what i've seen here,and other boards is that the L92s like a later intake opening and less overlap than what we've seen as normal..beyond that,i'm clueless as well...

 

I wonder if Comp or the like would be able to design a cam given the specs of the heads, the CI, and what you want from the car in terms of power band, drivibility, etc.

 

Love to share-but it is a shop specific (not a sponsor on the board) designed by a well known person that was banned from this board.

PM me and I will tell you about it.

What I will tell you is on stock bottom end GTO's the cam makes 450rwhp through a stalled auto and 485 through an M6 (assuming the "normal" supporting mods).

Furthermore buying fully ported L92 heads is overkill and does more harm than good on a stock LS2.

 

Boy that makes it hard to figure out....


Thats very true. ANY intake porting will more than likely hurt a smaller (6.0) motor.

 

****... aint that the truth.... my heads are waaay overkill for my 408.... damn 244/248 cam is as quiet as my 226/226 was in my stock motor and the car simply feels like it wants more cam! Atleast I know it dont make a lick of difference on the jug. I am sure with the right cam it will make a bit more power.

 

so.... without giving up the goose.... what trends/characteristics do you see?

 

I realize this is an old post but I will add one point here..... I recommended a cam with 0 deg overlap for this combination and some people took issue with that.... that's OK.... I'm just offering an opinion.... but take note..... an LS7 makes quite a bit of power with a similar head and intake system and has a cam with -20 deg overlap @ .050" cam lift. My recommendation is for 20 deg MORE.... so I don't think that I am necessarily being overconservative.

 

if it's not too much to ask,what is the difference between the intake lobe profile,as compared to one for an LS1/2 cam?more aggressive,less aggressive,etc?

 

Should have dyno numbers on a smaller cam today or tommorow.... I will post them up.

Looking for more lowend torque to compensate for the nitrous converter on motor.

 

 

Any numbers yet?

 

Still waiting.... I will post right when I get something...

:crossing fingers: for more than 440rwhp. Will be more than pleased with anything over 420.... this car drives like a 480-520rwhp car though!

 

That's because of all the low end torque these heads don't make.

 

Who speced your cam?

 

If you're asking me - Richard at WCCH and I agreed on a cam that we thought would work well with his Stage 2 L92 heads. Look like we did pretty well. 510-470 and drives like stock. Definitely not a max build. Last week I changed from a fairly small filtered Breathless Performance Vortex air intake to a huge filtered Haltech Venom AAIS. I had to add 5lbs of fuel pressure to richen the car up temporarily until Ed can retune it. It was running SUPER lean after the swap. The BP unit may have have been holding it bad some. Can't wait to get it retuned and dyno'd.

 

wize anything?

 

Is the L76 ported?

 

I just put together a 416 L92 with ported L92 heads and 11:1 CR. After much research, I went with a 228/232 114+4 on Comp XE lobes. This cam is way more aggressive than my TR224 was in the 346 LS6 I had been running. It doesn't strighten out and run smooth until at least 2000 RPM, though I still have some VE tuning to do.

 

mattb do you have any track or dyno #'s?

 

I run a 234-240 112 cam and mine is like silk everywhere. Very, very close to stock. Get that bitch tuned.