black_knight

iTrader: (1)

So I've heard several people say that the TR224 cam will produce more power across the entire rev range than, say, the hotcam. The dynos seem to prove that it will about match it in the low-end and will pull ahead up top. Anyone with dyno proof is welcome to confirm or dispute this.

Obviously, the comparison would have to be between cars with similar mods. It wouldn't make much sense to compare a car with aftermarket heads to one with stock heads. Stock to stock or aftermarket to aftermarket would be okay.

The next, and main, question would be, how big can you go with a cam without losing ANY low-end power? Does a 224 cam beat a 228 anywhere in the low-end? How about vs a 230-ish cam? Split cams are also welcome. Any LSA is welcome. I'm not concerned about emissions.

And please no comments about torque. Horsepower is calculated from torque! I'm interested in cars that will beat out others across the entire range, so we shouldn't be seeing anything that wins in TQ but not HP.

And, yes, I've done searches. No real answers, and it would be good to have the answer here, in one place.

Terry Burger

iTrader: (4)

Here is a dyno of a stock cam vs. a 224/232 115ls cam.

black_knight

iTrader: (1)

Thank you, Terry, that's a good example. It's better than stock throughout the rev range.

Though that is a blower cam with a high LSA and more exhaust duration (both help with FI).

I'm sure that a more N/A oriented cam would produce even better results.

Anyone have a 230ish cam that doesn't lose power anywhere in the rev range?

Keep 'em coming!

black_knight

iTrader: (1)

One thing I notice about that cam, though, is that it loses out in the low-end big time vs, say, this hotcam:

http://www.cobraeater.cz28.com/cgi-b...r%20Hotcam.jpg

Actually, it loses across the rev range (until it gets above 6500 or so).

Now, of course, that's because you have a blower cam that's not meant to be used N/A. And also becuase that other guy has an lsx.

Magred2001vette

iTrader: (2)

I would love to see any over-lay graphs between stock cam and aftermarket....this is the only way to easily tell what you have!

Come on people post your overlay graphs.

soundengineer

iTrader: (16)

look at mine... x1 cam... 230/227 .591/.571 112lsa+4

click in my signature

my torque curve is flat...and doesnt lose much at all down low.... well above the stock motor..

soliari

Not to toot my own horn, but look at this torque curve ... 350 before 3k and up over 391 for a peek and carries torque above 350 to 6k (blue line is the lastest dyno)

gator's 99TA

iTrader: (2)

the biggest cams out there with large exhaust duration are making big tq. some are making 420+ rwtq. cams like the LGM X2 and X3 cams.

soliari

there are plenty of cams making good peak torque. I think he was specifically looking at the cams low end torque. That being from idle to 4k or so ...

Tripp

here is my dyno. TR224 .563 112

Ryan02SS

iTrader: (3)

Current


Stock

black_knight

iTrader: (1)

Good posts, all!

I'll be pouring over these.

Tripp, it looks like you get beaten just slightly by the hotcam example I posted. What other mods did you have when you got that dyno? The ones in your sig, or are you missing some?

Soundengineer, looks like the hotcam example beats you across the range, as well. Was that dyno taken with all your mods?

Granted the hotcam example I showed does have the LSX, but that shouldn't account for the differance I'm seeing. Are you guys running through gears or 12 bolts?

RyanSS, your links are broken.

Gator, are those cams you speak of beating out the hotcam or TR224 in torque across the WHOLE rev range, or just in peak? Do you have a dyno?

---------------------------

Solari, feel free to toot your own horn. That's what I'm looking for here! It looks like your graph just barely beats out the hotcam example across the whole range, and has about 10 more peak hp. So that qualifies as exactly what I'm looking for. That is with stock heads, right?

According to your site, your cam is a "Comp Cams Xtreme Energy 216/.587/114+2 cam"

Is that correct? Did you run that 12.9 sec slip with the same mods that dynoed the graph you gave, because that sounds a bit low...

And... hey, wait a second... you dynoed THAT without LT's?!?

Tripp

all mods in sig. what mods were on the hotcam car dynograph u posted? you should probably see what people are running at the track with both cams to get u a better idea. i havent taken mine but i would be interested to see if the TR224 is doing better than the Hotcam out at the track.?.?...

soliari

yeah, the dyno on the website and the lower line on the graph i posted earlier is without LT's. The higher (blue) line on the graph in this post is WITH LT's.

so, to clarify 379 RWHP without LT's and 397 RWHP WITH LT's.

YES, on stock heads!!

12.9 does seem low, but take into consideration that the track I ran that on is at 5300 feet and the DA was 6300 feet. AND that was before LT's. I haven't had the opportunity to take it to the track since the LT install, but I'm looking at an additional .2 in the 1/4 which puts the car at 12.77 actual (remember 5300 feet) ...

go find a correction for that number and you'll see the car *should* run a high 11 1/4 ET at sea level (low altitude)

In case you're wondering, race weight is 3690 lbs (with driver)

M6HuggerSS

great thread guys! keep the graphs coming! i really like the overlays against the stock cam....really good visual!

SouthFL.02.SS

TSP231/237, great all around.

Tripp

how many miles have u had the TSP cam in for SouthFL? does it seem pretty good for a daily driver? is this ur first cam?

SouthFL.02.SS

At 11,000 miles I had an MTI C1 (222/222 .566/.566 112) put in. It was great, yet I felt it left me hanging for more on the top end.

At 13,000 miles, I installed the TSP231/237 and noticed that not only did it have just as much torque down low as the C1 (seat of pants), it pulled like a mad bull 'till 6900rpms.

Granted, to enjoy the big cam, stall and/or gears should match up.
The True Duals X also help a bit to get meat under the curve.


**edit: oh yeah, car has 21K miles now.

Magred2001vette

iTrader: (2)

SouthFL.02.SS , Do you feel true duals are still needed w/ a small cam like a 224/224 .581 112?

SouthFL.02.SS

I think true duals can work great with even a near stock setup. Near stock, I would do 2.5". 2.5" should support a cammed setup. 3" for heads/cam for sure.

In the end, a cutout will give you the same peak as true duals. People with x pipes just seem to think there is more gains under the curve as well.