no you dont. As DASUPRSLO already stated it can be done with a smallish cam that would be VERY fun on the street. Most of these larger cams make peak torque too high in the RPM band to be any fun on the street.

 

this is the Dapsuprslo graph

That trq curve is sick......

 

hey nick, how was that cam on the valvetrain? would it be any worse than the one i have now (224/224 .581/.581 112lsa) ?

 

It will be a tad easier, since it is on XE lobes.

 

Bingo!!!

 

My tr230/224 .576/.563 111lsa hit 395/377 on stock heads. WITHOUT a pulley.

All my mods at the time:
Modifications-

__Valvetrain__
-TR 230 (230/224 .575/.563 111)
-Hardened Pushrods
-Comp 918 Valve Springs
-Comp Titanium Retainers
-LS2 Timing Chain

__External Engine__
-TSP Air Lid
-Free Ram Air
-FRAM Air filter
-SLP Smooth Bellow
-Shaner S2 Throttle Body
-Jet Hot LT Ceramic Coated Headers
-Lane's Duals (3" Off road X pipe, 12" Flowpro Twisters)
-Dyno Tuning via HP Tuners (Sean Freese @ Fastech)

 

Then you are 23 ft. lbs. lower than the goal I stated which was 400 rwtq. I am not interested in high rpm horsepower right now.

A cam with that much duration will require too much rpm, and will have poor low end and mid-range torque for 400 rwtq. And if the TR230 above got 395 rwhp on stock heads with no pulley; how much better is a T-Rex on a 346" motor with stock heads? 20 rwhp? That is not worth it to me.

 

That is exactly what I am after!

 

I'm contemplating the same but on faster lobes
Like:

224/224, .588/.588 110lsa +0 (or a 112 lsa +0)

 

I would highly recommend a faster lobe with this cam. I think it will work very well and originally requested a faster lobe with this cam but comp didn't listen to me (at the time I didn't know that you couldn't get the same lobe with different lifts, well without paying big bucks for a one off lobe, and I requested xe-r ramp rates with only 565 ish lift). They just said ok and gave me the xe lobe cause it was the most common and the closest thing lift wise for the ls1s.

 

Nick, if i sell my car ill get with you when i pick up a new one, since you know more about this than I do, and I like the looks of the graph that was posted.

 

Guys If I can ever get a chance to post my graph. You will like the Torque numbers!!!!!! I dont even have longtubes just mac mids. 222/222 xer 581 114+2

Let me see what I can do. John

 

OK, sounds good Cris.

 

I'd like to see this myself. With the xe-r lobes your duration at .200 .300 .400 up to peak is probably greater then mine so it kind of makes sense. What doesn't though is that your cam has almost no overlap. Either or go ahead and dig that graph up.

 

If you don't mind the funny car lope, then a 228/224 109 on a 108 ICL will make big torque. It has the same IVC and EVO as the 224/224 110 110 cam you were thinking of, but more overlap.

 

No it doesn't, not at .050" anyway. My cam closes the IV at 38 degrees, yours is 42 degrees. Your cam has 8 degrees of overlap where mine has 4 so you are right there. To be honest there's not one valve event that is the same in your cam verses mine at .050"

Edit, nevermind, I just saw that you were speaking of a my cam straight up (110icl). My cam was on a 106icl which is part of the reason it made the torque it did. Sorry, I need to read more carefully sometimes, ha ha.

 

DAP:
Yup, I was referring to the 110 ICL. Your peak TQ was in the 4500 - 4800 rpm range which is where these cars seem to peak with a wide variety of cams, including those with a 44* IVC. I assume that LS6 intake has a fair amount influence on that. My guess is that a 110 ICL would still peak by 4800 and not give up much peak TQ, if any, and make a little better power up top. It would probably give up a bit on the bottom end though.

 

Do you think a 110 ICL would make enough vacuum for an A4?

 

Apparently most ppl dont know what stock heads means. lol
You'd need a huge cam with every f-in bolt on available (fast etc.) and you still might not see it since the numbers attained would be relative to how strong/weak your car was stock.

 

Not really, I got 404rwhp/383rwtq with a 224/220 cam only + bolt ons (A4).
What you need is a well balanced combo.