I recently changed the heads on my car to Trickflow 215cc and added a Fast 90/90 setup.

Here's the chart.


The full mod list on the car, car is a 03 Z06.

Trickflow 215cc heads milled to 59cc, stock GM MLS gaskets.
TSP MS3, 236/242 603/609 113.
Ported Fast 90/LS2 TB unported.
ASP UD pulley.
Kooks 1 3/4 LTs, no cats. Stock titanium exhaust.
Halltech Stinger.
FAST 36lb injectors.
Cartek Clutch.
DTE 3.73 rear.
NX 100shot wet.

The car is making decent power, but not as much as the other TFS H/C combos. But Cartek is known for getting lower dyno numbers than other shops. My main issue right now is not really with the peak power, but with the power curve especially the torque curve. The car is hitting peak torque at 5.5k which is way too late, and the HP never really peaks. I'm not sure if it's because there's not enough timing or what. I have an idea of what cam I should be putting in there, but I want to see what you guys think.

Basically, I want the peak HP to be at least 480rwhp and the peak torque around 420rwtq. But I wan to make the peak torque at about 4500rpm and the peak HP at around 6500.(I shift at 6800) I'll be changing the cam only, so I can't go with a thinner gasket to get more CR. AND I want better driveability on the low end. Right now the car is so sluggish under 2k rpm, and it keeps on wanting to die out at when I clutch in.

Vengenace's 500rwhp combo is with a cam that has even more duration than the MS3. I think it's like 238/243 .602/.598 113+2. However, that cam does get the power in earlier, hitting peak torque at around 4600rpm.

ECS's 500rwhp combo has a cam that's around the high 230s in duration, probably 236/236. Right under .600 on lifts and on a 114 +?. The dyno chart I saw on this cam has peak torque at around 4800 rpm, not too bad either.

So, what cam specs do you guys think I should be going with?

 

Brad02Z06 Changed his Camshaft from MS3 to Vengence Custom Camshaft besides he has 1 7/8 kooks longtubes which effects on his mid range anyway here's his Graph hosting by me



His Thread https://ls1tech.com/forums/showthrea...0&page=1&pp=10

I woudn't really hesitate to call Ron@Vengenceracing to give ya the right directions buddy

Btw really impressive numbers so far man

peace

 

Yah, his cam actually has more duration. I wonder if it'll have better street manners than the MS3...

 

Believe me man it's all about tune

peace

 

I know it's mostly in the tune, but my car is tuned by Cartek so it's not like the car is tuned by some Joe Schmoe. I don't know, it's a little frustrating that all these 500rwhp H/C combo cars running similar sized cam have pretty good driveability when I still have the stupid idle hunting issue.

 

It's not all in the tune...it's pretty obvious that your cam is mis-matched for your combo. Too late of an intake valve closing point, too wide of LSA and more than likely too low of DCR. Look at all the recent big torque dynos...they all seem to make their cubic inch displacement in torque by 3000 rpm, they carry a big peak torque number and also make an outstanding peak hp number. It's all about area under the curve. Get the right cam in there and you'd be right up there with the best of them.

Narrow the LSA, close the intake valve a little earlier, make sure overlap is either centered over TDC or biased to the intake side of TDC, and try to maximize dynamic compression around the fuel you're using.

 

This is what my DCR look like right now,



I'm thinking about going with something like a 232/236 595/602 112+2.

That'll look like this,

 

I'll bet it's installed at 113 degree's.Moving it to 108 would probly make a huge difference.

 

I agree. Unless you installed it with a degree wheel and know for sure, you have classic signs of a cam being in at a retarded intake centerline. Advance the cam to 108ICL or choose a new cam based on the parameters I laid out above. A smaller cam on a 112LSA will help bring back some bottom end, but not as much as a cam with a narrower LSA and proper valve events. Don't be afraid to go 110LSA.

 

The cam was installed dot to dot as far as I know, so you're saying that they might've installed it incorrectly and retarded the timing? If I going to tear the car down to where I can advance the cam, I might as well throw a new cam in there. What would be the difference between going with a 112+2 and a 110 LSA?

Cartek is telling me to go with something like a 232/234 cam but on a 114LSA, they're saying that the tight LSA is causing more overlap and with the larger valves now the car have is causing the surging at 1500rpm and the idle dip.

 

Dot to dot is no guarantee that the cam was installed at the proper intake centerline. Variances in cam grinding, chain stretch, and sprocket orientation can all add up. Like I said, look at all the stock CID setups that are making over 425 tq. I highly doubt you will see many or ANY running a 114LSA. Do some more searching and see what setups people are running for maximum area under the curve. You will see lots of consistencies.

 

With a 110LSA, is it possible to have good driveability without going to SD tune? Like no surging under 1500rpm and rpm not dipping when clutching in?

 

My first cam was on a 110lsa but kinda small duration and had lots of TQ. It drove well also.

My second cam was like a x3 on a 114lsa. It had low power under 4K rpms. And it was tough to get it to idle well. My tuner had a issue with this.

Now my new one is on a 110 and I'm sure it will do well also.

Theres my .02.

 

If you have the right tuner, definitely! But you also shouldn't be apprehensive about a SD tune. Speed Density opens up tuning windows that aren't possible with a MAF. But to answer your question, yes, you can easily run 110LSA with a MAF if your tuner knows what they're doing.

 

Thats exactly what i meant by a good tune Pat cause i was referring to A whole diff. Custom Camshaft On tighter LSA

peace

 

What about this TSP cam, 232/234 .643/.598 111.

 

232/238 .643 .605 111+2 LSA
LSK 2128/ XE-R 3729

Using all your same info, I get 11.43 SCR and 8.73 DCR

 

How much power would I loose if I go with the XER lobe on each side?

 

What's the difference between these lsa if all other specs of the cams are the same?

110
112+2
112 lsa installed at 2 degrees advance.

 

Is that what ya have in your car now lilbuddy ?!

peace