Patrick G

iTrader: (14)

Although I feel that a cam in the low to mid 230s on a 110-111LSA will give the most area under the curve (3000-6500rpm) for a heads/cam combination, they are somewhat lacking in the 2000-2500 rpm range. To get a cam that's better than stock in the 2000-2500 rpm range, you need to increase dynamic compression over stock and limit overlap compared to a more conventional "area under the curve" cam. Doing this means that what you gain down low will also somewhat limit you up high. Compromises. But there is hope...

Something like a 218/222 .605/.581 114LSA +4 would work very well with ported heads or with stock heads provided the vehicle had excellent exhaust. You only get 41.5 degrees of overlap at .006" which is outstanding, but the high lift and fast ramps of the intake would still allow you to make strong power to 6000 rpm. Not a bad compromise at all.

eamador11

yeah.... and what part of G5x-3 @112LSA dont you understand???

PREDATOR-Z

Those lobes are actualy easier on the .006 lift area than XE-R. With the new Gold Extreme springs and cadillac lifters, there is no reason to be affraid.
That cam will spec as a 224.x/224.x and low to midrange trq will be in stroker territory. Also you can shift at 6300 having harnessed a nice band.
cam has only 4* overlap so easy to tune.

I've seen a XE lobed one making 400/400 and a XE-R making 412/414, this one might even top that (definately under the curve)

LS1C5Vette

iTrader: (11)

Thanks for all the replys guys, I am going to choose between the two - tsp 228R or tqr v.2, can someone give me a dyno graph of these with the stg 2.5 5.3l heads?

PREDATOR-Z

Neither is fitting your original criteria. The TSP 224R on a 112 would be better.
Definately not the TV2, I have that cam and the name is missleading.

brad8266

iTrader: (23)

Here is my dyno graph on TEA Stage 3 5.3L heads with a 232/236 on a 112 XE lobes which is fairly close to the torquer(232/234). Makes pretty damn good power in the very low RPM's.

PREDATOR-Z

nice, what is your SCR and were you aborting the run early or it took a rapid dive after peak. Very exhaust biased if so.

brad8266

iTrader: (23)

Around 11.9, the heads are decked down to about 57cc and I run a .040 cometic gasket. We sut it down after peak power. That dyno session was untuned, Im sure with some tuning it wont drop off so much since it ran too rich. they masured like down into the 10's AFR that run.

PREDATOR-Z

That makes sense on so much trq early with VEs being exhaust biased. Good warrior.

brad8266

iTrader: (23)

Thanks, its a good street car too. Behaves well on the street, once I get it tuned really well it will only get better. IIRC overlap was biased to the exhaust side by 2 degree.

LS1C5Vette

iTrader: (11)

I think ima go with the 228R, I have been misreading a lot of these dyno graphs, thats why I wanted to LOW end power, now that I know how to read them (I feel like a dum ***) I want a cam that pulls from about 2800 up to 6300 and I think the 228R 112 LSA will be good for that what do you think??

LS1C5Vette

iTrader: (11)

Or what about a 228/228 .595/.595 from tsp (custom grind)

kilrb

Not to pick a fight or anything, but I don't see how Thunder's 224 is going to be in a different league than the Texas Speed 224 on XE-R lobes (.581 lift). Unless I'm mistaken, when I did my homework, I was told that the XE-R lobes are sligthly more aggressive than Thunder Racing's. I don't see how the same intake/exhaust duration and LSA with less lift is going to blow away the same specs with roughly .020 more lift...

To the original poster, I settled on Texas Speed's 224R with their Stage 2.5 5.3 liter heads in my 99 FRC Vette. Everything is in (long tubes, cats, underdrive, LS6 intake, Vararam), and I have a tune scheduled for the 23rd. I'd be more than happy to share my dyno graph with you after that date. From what I read in my research on this forum, the 224R should give a little better low end grunt, while sacrificing a few horses up top. I was really wanting something with some nice low-end, so I went with it as opposed to something bigger. That, and I didn't want too much lope (the 228R has 4 degrees more overlap, and thus more lope). There are other members on the board with the 224R cam-only, and one or two with heads. Check around... Good luck!

brad8266

iTrader: (23)

The 224 range cams can make huge power everywhere, just look at Patrick G's setup as proof.

PREDATOR-Z

Another cam to consider is TR230/224 reverse. Heck of a cam for that range duration.

LS1C5Vette

iTrader: (11)

dammit, its between the 224r and 228r now, mabye I should have a custom grind that a 226/226 .593/.593, there thats in the middle of the 2!!

jegten

iTrader: (22)

hey, LS1C5Vette,

what cc are you getting those heads in, and valve size?
i am looking at getting those heads.

there are some people running the 228r already. do a search on it, and also go to ls1gto.com, i know a couple of people have posted their experiences with it.

also, FTI as a cam with slightly higher lift, 224*-228*-111*-.600"-.600" Rebel TQ.
or 220*-224*-111*-.597"-.592" StreetSweeper-TQ

anyhow, hope that helps. and let me know.
thanks.

LS1C5Vette

iTrader: (11)

I dont remember what cc they are but I do know that they have smaller combustion chambers for a 10.75:1 compression ratio and they have the stainless steel 2.04" intake/1.575" exhaust valves

PREDATOR-Z

5.3s are between 63>64cc ported, I have a set of these on my 370cid, mine were 64cc

LS1C5Vette

iTrader: (11)

Ok, now I have changed my mind AGAIN, I like what I see about the 228R but I dont think ill be happy with that, I am leaning more toward the Tqr V.2 OR mabye even the 233/239 cam. Whick one of these will give me better 1/4 mile times and faster 30-150mph times??? Is the 233/239 even a streeetable cam? I know the V.2 is. P.S. this is NOT a DD car, but I dont want it to turn out like a dragster...