Steven @ Cam Motion

First of all Great Info and Thank You for all the testing/data provided!
That is an awful lot of time and work, well worth waiting for.

Question for you slightly off topic if I may.
Lets say I wanted to run a 223* Intake duration with ~ .620" lift (using PAC .625" BeeHive spring)

Would you recommend your .365" lobe (with a 222* shortest limit) with OE 1.7 Rocker = .620"
or
.345" lobe (214* shortest limit) and a YT RR 1.8 for a .621"?

~6K Peak ~6.5K Limit 97% street car.

On another note how many Dyno-Pulls (injected/carbed) did you get on the
AMSOIL Signature Series 10W-30,
and how did it look afterwards, especially with the potentially rich? carbed runs.
Thank You
Dan

 

I was pretty happy with the 212-218-115+0 LSA it was undetectable and very torquey but I wanted more mid-range so I tried the 226-230-112 + 4 and it's great The mid-range is better but with my setup it's still only peaks at 5500 RPM but and it's not as good as the 212 218 below 2000 sotp. I was thinking something in between with a wider LSA and a smaller intake lobe maybe even a slightly longer exhaust lobe with a maybe a little bit later IVC would drive better and carry a little bit higher, I think the 212-218-115 LSA is still great for a heavy truck with a big motor

 

seems odd a cam that size would peak at 5500. Was that dynod? If so I would be there's an issue. My smaller Titan 2 revs to over 7k without a nose dive.

 

I agree that cam is close to the Sloppy Stage II (228/230 .585" .585" 112 +4) that turns 6500 RPM with ease.

 

The test motor is a 6.0 with 706 and a 92mm tbss intake, mine is a 6.2 with a 78mm ls6 intake and F-body manifolds so even if I had good exhaust, which I don't, it's going to want to peak lower than most other combos because of the added displacement and lack of airflow, I was happy with both cams I've ran in it, I just think I'd be happier with a custom compromise of the two, something akin to the old thunder cheater cam or something

 

It doesn't nose dive it keeps building power 5500 but then it's like a flat line all the way out to 7K, I've had it on a mustang dyno, it made more tq than hp

 

You've got something wrong in your setup. Post a graph.

 

Pull was made in 2nd gear with stock driveline and 2.73's

I don't think there's anything wrong with it I think there is a reason why all of the 706 head tests you see magazines and everyone else doing on 6 liters use the dish pistons lq4, ly6 ect, The added compression is likely wasted on the small port?

The difference between my 6L setup and everyone else that puts 706 heads on one of these is that they don't have LS3 pistons underneath it like I do, I also have stock f body exhaust manifolds and the stock LS6 intake, The camshaft is the 226/230 112+4 summit racing 8714 it's only .545 lift, there's a lot of things choking my engine lol. 376" added displacement vs 364 also brings the power band down some. I was just trying to make the most of my stock converter and 2.73s

I use this setup for SCCA autocross and I race in a completely stock class however they let me run a a non-original long block because The original 5.7L blew up and because everyone else in my class is a brand new BMW I'm actually pretty damn competitive Even on stock 245 size tires, I'm just thinking my combo is so restricted it would probably work better with slightly less overlap and help me stay under the radar

 

The first problem is the engine wasn't even rev'd out on the dyno. That thing should have been rev'd to 6500 minimum. You don't really know where its peaking and how hard it "falls off". I appreciate you're saying it only has .545 lift, but take a look at the ls6 cam (.550 lift) and its rev'd north of 7k.

 

Hey Dan, That will really depends on the engine size, intake manifold and cylinder head. As you can see by the tests in this thread, the intake choice and head choice can have a substantial impact on ideal cam choice.

As for the oil, we made over 100 pulls on that junkyard 6.0 with many of them exceeding 7500 RPM. In addition, the base tune on EFI and carburetor were made on the dyno, so it did not start out with the cleanest tune. After all of the sessions, the oil still looked great. If we change the oil before the next dyno session, it will be out of guilt and not out of necessity. Great product from a great vendor!

 

It may just be the culmination of multiple factors. He has a larger engine, smaller intake, no headers and a low lift cam. All that stuff can really add up.

 

It would be great to test our new Titan 1 Truck cam on a dyno that would hold down to 2000 RPM. I believe based on what I have seen, it will perform very well down there. If somebody has access to a dyno that will hold that low, I would make them a special deal on the cam just to get the definitive data.

 

Id love to have seen a dyno pull to 6500 and see what it does. A stock LS6 (550 lift) with stock manifolds peaks higher than his dyno. Granted different sized motor for sure.

 

How about a butt dyno hahah

 

​​​​​​I keep looking at the ls6 powemax 204/222-112+2 I think that would be an absolute stump puller with my setup

 

The graph I posted is a pull from about 2,300 rpm up with a stock converter is that good enough? She's a heartbreaker dyno though but you'll certainly get your data be it good or bad I can dyno it again just before the swap to verify everything FYI the rest of my valvetrain is Ls6 springs and btr 7.450 rods

 

And he has 706 heads and not 243. That will affect peak also.

 

Lets talk more. Hit me up at Steven@CamMotion.com

 

Looks similar to what I sent you back in my PM reply, I'd just like more intake duration on that. 😉

 

I reached out to Steven at Cam motion let's see what he says, I'm sure he can get a lot more usable torque out of this pig without hurting the power at 5500 at all