Looking for a cam recommendation for this setup:

6.0 iron block bored to 6.2L
LS2 crank/rods
Forged pistons with valve relief
PRC 225 as-cast heads (62cc) with PRC dual spring .650 lift
stock rocker arms
11.4:1 CR
long tube headers
Fast 102 intake
Morel lifters
manual trans
Ford 9" 3.55 gears
26" tall tire

Car is not a daily driver but driven often in the summer. Maybe 4000 miles per year.

I checked Texas Speeds website and was considering the Tsunami or MS4 cams. Any thoughts on those or other cams?

thanks

 

With the heads being the limiting factor (could have opted for the PRC 237 porting job on them) i would expect 500rwhp from an ms4 with this combo and for it to have a TON of midrange.

 

I know there are different lobe styles, LXL, LSK, XE, etc. I know some are harder than other on the valvetrain (and also quieter?) Any thoughts on that? What lobes do the major cam players use? (TSP MS4, Tick Polluter, BTR, etc)

 

Tick and BTR and Bewley are all the exact same cams. ground by cam motion. TSP has new lobes ground on a callies core If that fits what your looking for.

 

Let me say this about cams we grind for different companies. They all have there own proprietary lobe designs to there specs. All of the lobes are designed to make maximum power with out beating up the lifters or the valve train. These lobe much more stable at higher RPMS.

 

4cc Valve reliefs to get 11.4:1?

I would do something like the Cam Motion Penetrator 230/238 .637/.620 112+4. That would be plenty rowdy in the 376cid motor, but would drive nice and make good power with the PRC 225 heads.

 

Feel free to give us a call. We would be happy to go over your combination and goals and point you in the right direction as far as what cam is best for you. We have several new lobe designs to quiet down the valve train and still produce amazing results while being ground on Callies cam cores. We have great new things coming out of Texas Speed! Our number is 512-863-0900.

Lonnie

 

Martin recommended the Tick Performance SNS TorqueMAX Stage 3 (235/243 | .62x"/.62x" | LSA111+2)

Lonnie @ TSP recommended the Tsunami (235/240 .622"/.615 111LSA)

Kip @ CamMotion recommended (228/630/236/612/113+4) I think he thought the penetrator would be too much

A lot to think about. Thoughts?

 

There's a huge difference in drivability between the TorqueMAX 3 and Tsunami and the Kip recommendation.

Personally, if you don't have a kickass tuner (not for a dyno number - I'm taking the time it takes to dial in drivability), I wouldn't even consider the first two. And I'm serious as **** on that. I dialed in my cam, which is the size of the TorqueMAX 3 and I would never buy that cam again. It drives fine for what it is, but it's still not what I would ever recommend to someone else. And I don't have any bucking/surging/hesitation - because I spent a lot of time dialing that out of the car. AND I have a 4200 stall. And it's still not what I would consider ideal for a car you plan to actually drive on the street. It's a beast when you unleash it. And I can live with it in traffic. In fact, I don't mind it and drive it around a lot now that I got the tune ironed out. But, I could see that it would be an issue for other people.

Part of the issue is we are using old, slow *** PCMs, and a slow to react IAC. In an LS2 or newer Vette, they are fast enough to tame a lot of the issues with big cams.

 

The cam Kip is recommending is almost my exact cam. Great balance between power and drive ability.

 

Our cams are far different from one another.

BTR mainly uses Comp. I don't know if they have been using Cam Motion or not, but back at the end of July when Brian and I were having a conversation he mentioned that they had not had a cam ground by Kip yet. That has probably changed by now.

We have been using Cam Motion since about February of this year for 95% of our cam grinds.

As Kip mentioned, all of our lobes at Tick are proprietary and are ground to my specific specifications.

 

with street cars, too many people are worried about those last few horsepower. ALWAYS better to slightly undercam than overcam. Sometimes that slightly bigger cam will make an extra 5hp but will have horrible driving manners.

 

the truth for real.

 

The Tsunami V2 cam is a 111+2 ground on our new TSP lobes.

Also, that is not the cam that I originally recommended either. I did recommend something much smaller. The customer insisted on a larger camshaft and I'd rather see him in a Tsunami camshaft then our MS4 given his combination. The Tsunami makes about 5rwhp less than the MS4 but has A Lot better street manners. Sometimes people just want a huge cam.

Lonnie

 

I'm sure whatever cam you go with, you'll be happy, especially since you're not chasing a dyno number. Please keep this in mind though. A small cam like a 224/228 114 LSA cam can have worse driving characteristics than a 235/240 111 LSA cam in the hands of a shitty tuner. Point being make sure you have someone reputable tune the car.

 

I am running a 230/238 113+3 Cam Motion in my LS2 which is similar to your build but with 799 ported heads instead of aftermarket castings. You also have a little more compression.

For how you describe wanting to use the car I would stick with something similar to what Kip and it sounds like Texas Speed originally recommended. You will love the power from idle to redline instead of getting something too big you have to wait on to come in.

 

Can anyone help me calculate the DCR of the motor? Ended up going with the Tick SNS stage 3.

Engine specs:
4.065 bore
3.622 LS2 stroke
LS2 stock rods and crank
4.080 head gasket bore
.051 HG thickness
58.5cc chamber
-5cc piston valve reliefs
0.015 piston above deck

Cam specs:
Intake valve close 46.2* ABDC

I keep coming up with a crazy number, doesn't make sense.

thanks

 

I use wallace racing calculators, really easy to use

 

Use the .006 duration numbers to calculate DCR.

Here are the .006 numbers: 288/298 111+2

So the IVC event @.006 = 73* ABDC