z98

"In general a 224 is worth around 10rwhp over a 220"

No.

The difference only a few hp.

4* of duration does NOT equal 10 hp.

It MIGHT be 5 with a nice set of heads, its probably only a couple with stock heads.

PREDATOR-Z

What you are just stating that for the sake of contradiction?/
We were talking about TR220 (220/220, .553/.553 112lsa) and
TR224 (224/224, .563/.563 112lsa)
around 10rwhp is not exactly 10, give or take a couple.
Obviously you can see these are not the same cam. Valve events are different besides the obvious #'s. And Yes in general 224 cams are worth around 10 extra rwhp over 220's on the same set up.

PREDATOR-Z

to maximise your output, yes you'll have to do some adjustments.

OWENMUSTANG

iTrader: (2)

just a thought....did you ever look at vinci's asp line? is all about torque..

Predator

No, but feel free to fill me in. I haven't ordered a cam yet, and I'm still open-minded.

I'll try to find their website.

Thanks.

marc_w

I HEAR THAT!!

I'm right down the highway from you... 395. Worcester is so full of rice, it's not even funny.

I'll have a TR220 112 going in the truck in a few weeks time.

marc_w

I was very close to ordering the Vinci ASP-Kicker, but ended up going for the TR220 for it's stronger-looking-on-paper lobes, and the TR's 1300 vs VHP's 1900 rpm starting powerband.

I still very well may go for the 'kicker. Just putting the TR in for the heck of it.

Predator

Marc, hey neighbor!!

I hear ya about the rice. I don't even have a heavily modded T/A, yet no one seems to want anything to do with me as far as racing on the street. Must be the Loudmouth exhaust.

I was having a hard time deciding between the 220 or 224 cams, and for the reason you mention. Sure I'd lose about 10hp with the 220, but the power would come on sooner, and with 3.42s, the extra low end might be better than the extra ten ponies. I don't really know if that's true, just wondering. You really need gears to go with a monster cam. When I'm able to swap out my rear end, I'll have more aggressive cam options to choose from.

Anyway, let me know how you like your 220 when you get it installed. If you really like the bottom end, I might get that one instead of the 224.

PREDATOR-Z

Hi predator,
He is putting the TR220 in a truck which needs more low trq to move all that weight.
TR 224 is not going to loose so much ponies below 2000 rpm to make any difference on a car.
Not to mention, who street races at 1300 rpm??? Once you hit WOT you'll be way above that in a blink of an eye, trying to control the madly spinning tires to get some grip.
Stick with the 224, it is a great and proven performer.

Damian

iTrader: (89)

Another thing to consider when building a combo around sloppy gearing is the ICL of the cam (Intake closing point). This will move your powerband. Of course a lower ICL will bring your TQ lower in the curve, which is what you need to compinsate for the 3:42's. IE: I would recommend at least a 108 ICL on a 112 LSA (112+4) for best street TQ. There's more to it than just picking a cam duration and LSA if you want a solid combo...

IMO, I think you would be best off trying one of the FMS cams for your goals. They offer better driveability, and more power. The FM10 or FM11 would make more power than the 224, driveability is almost identical, and work very well with 3:42's providing you used a 112+4. I know this for a fact through my own personal experience and R&D.....

PREDATOR-Z

Perhaps someone can chime in with a cam card for the TR224/ 112, but I think it is on a 108 ICL, meaning it is a TR224/.563/112+4, or contact Thunder racing for info.

Damian

iTrader: (89)

You are correct, most 224's have 4 degrees of added advance (meaning advancing the ICL down). I am not cutting your information short, you are correct that the 224 is a great 3:42's cam, I agree whole heartedly.

I just threw in my recommendation as well through what I have learned with my own car and other cars i've worked on.

This is a good thread BTW...

Predator

Fellas, thanks for clearing up what was my final source of indecision.

I'm gonna give the 224 112 a try. The great help and info in this thread, and my other research, keeps leading me back to that cam.

You guys really know your stuff! How could I go wrong.

Thanks again!

PREDATOR-Z

here is a dyno graph


and a thread to give you an idea at different combo power range

https://ls1tech.com/forums/drag-racing-tech/19481-first-8-second-ls1-car-show.html

Have fun and keep us posted of your results

Predator

PZ, are those the numbers with the 224? If so, looks great to me!

The link you provided doesn't seem to be working.

I'm REALLY looking forward to, not only the power bump, but the install too. Since my T/A is not my grocery getter, I don't care how long it takes me to get everything just right, and no foul ups.

Anyway, I WILL keep you posted, and thanks again for puttiing me on the right track. I owe you one!

Ryan02SS

iTrader: (3)

Go with the TR224 112LSA and you more than likely won't be disapointed. If you are keeping the stock rear gears this cam is hard to beat. However I would not want much more cam with the stock gears. 3.73's would be optimum for the TR224 but works fine on stock gearing. With all the bolt ons and my cutout open I pulled 399rwhp @ 386rwtq on stock heads with my TR224 and tuning. I then added Cats and Stage II heads and now numbers are in sig........

PREDATOR-Z

I fixed the link (Forgot 1 letter ooops)

Just kick some Cobra *** just once when you get the chance, we will be even

marc_w

The main reason I'm worried about power way down low, is because it's my daily (30K mile a year) driver. I drive like an old fart 95% of the time, and hardly see more than 2,500rpm.

I overcammed an old wanna-be muscle car of mine with a lazy Lunati cam. The thing fell on it's face way down low, and there is no way I'd put up with it in a daily driver.

PREDATOR-Z

Don't worry, just do it. You'll be planted in your seat not fall on your ***, this I garantee.

Predator

Ryan, those are some GREAT numbers! I don't think I can make that much with shorty headers, maybe 20 or so less, but still, I'm even more psyched to get this cam in.

PZ, I know they're our big brothers and all that, but I don't care, I wanna kick some Corvette butt too--they need it! Also, I'm on a mission (and I feel obligated) to keep letting all the ricers, in my town, know who the boss is. American muscle!