00Vette

iTrader: (4)

What cam is making the best rwhp from the AFR 205's? And can you put 225's in the 346 with a big cam to gain more rwhp than the 205's? Or are the heads too big? I asked because I read an article about some guys who ported the 205's to 228 and put them on a stock 346, and ran it with a 299/307 cam in the stock 346! They had to put bigger valve covers on I would think, but still, that don't sound smart to me!!!

SideStep

Are you saying you care only for MAX peak rwhp??? If so get a "big" high 23x/24x cam with XE-R type lobes, no advance and a 114 LSA... LG, TSP, AFR, etc... can give you recommendations...

Maybe you had better give us some more details about what your goal is???

00Vette

iTrader: (4)

To be honest, I bought some heads a while back (way before AFR, etc.) and had a custon 228/228 cam installed. I made just over 380rwhp with CAI, full exaust, etc. I'm now wanting to upgrade my H/C for something more aggressive yet steetable. (this car won't be driven daily, well maybe at first). Ultimately, I want a car I can drive around on sunny days and spray on occasionally when I hit the drag strip! 150 wet shot was what I was thinking.

mrr23

iTrader: (3)

here's a nice little blueprint to go by. vinci's PROJECT AFR 03 corvette convertible. made 403/394 before the converter and gear change and with a smaller cam than what you have now.
the vehicle page
http://www.vincihighperformance.com/...CT%20PAGE.HTML

here's the graphs page
http://www.vincihighperformance.com/...20PAGE%20.HTML

Tony Mamo @ AFR

iTrader: (13)

Give me a call @ AFR when you have some time....I will go over all your questions and try to advise you on the best route to take. Some decisions lead to other situations you might not have considered. I can help you put a real nice package together that will help you achieve your goals (hopefully!)

(818)890-0616

Regards,
Tony

Phil99vette

iTrader: (11)

- 4 degrees of seperation from intake to exhaust
- Cam duration will determine power band

1) 224/228 112 + 2 would be nice with 11.1:1 CR
2) 234/238 111 + 0 would be nice with 12.0:1 CR
Phil

Race Car Driver

F13 here.

J-Rod

I suspect those were gross numbers (.006) often called "advertised numbers rather than lift @ .050.

A 3734 XE-R lobe is 248 @ .050 and is 297 @ .006. So, that cam is big, but perhaps not as big as it sounds...

As for the 205's. The simple answer is it depends on how tight you want to spin the motor. That will determine how much duration, etc... you want. You can always add more duration, but if you have more than you need, you simply slow down airflow.

As for the 225's I think you'd definitely pick up peak power. As for the gains over 205's, it all depends on what you want to do.

Important considerations are

Weight
Gearing
RPM range
Compression, etc....

CrazytrainWS6

see sig for my setup. i was going to go with the 225's milled to 66cc, but the valves were too big. even with flycut pistons, there wasn't enough p\v clearence

General Jack

iTrader: (4)

Why is the 4 degrees of separation optimal? I think I've seen this before... maybe because AFR recommends a 224/228 cam with the 205 head...?

I've been thinking about these heads myself, but my current cam is a reverse split, the old X1 230/227. Would I be better off with a different cam for good midrange hp < 6,600 rpms with those 205 heads?

Viper

iTrader: (6)

Can always go custom cam like I did - had to fill out a sheet with 40 questions on it ( what do I plan to do, header primary size, intake etc. ) but I think it was well worth it.

227/231 571/578 111 intake no advance with 1.8 gold quick lifts it's now at 605/612 at 11:1 compression

Just saw your post above - 4 degrees seperation again!

jub jub

The cam in my sig was recommended by Tony. The power is there and it's very streetable!

SideStep

Hey what head gasket did you use??? Would/Could you post a dyno, I am interested in the TQ line???

mike c.

iTrader: (1)

my set up-01 ws6 m6,346ci,afr 205 heads 59cc 0.40 cometic gasket,LG motorsports-g5x3 cam,kooks w/off roads,b&b tryflo catback,asp pulley,12bolt w/4.11's. i have a stock ls6 intake,stock th-body and stock mass air(all will change soon)i made 425hp and 390tq on a mustang dyno. with lsx 90mm combo and a 85 mass i'm sure it will climb to 450-455ish hp.my car is stock weight and ran a best of 11.21@122.27 on a clutch thay went out this day on my 2nd run. goodluck to ya on finding a cam.

00Vette

iTrader: (4)

I will....Thanks.

00Vette

iTrader: (4)

Right now, my setup has alot on the top end 4500 and above, but very little on the low end. So what your saying (in a nut shell) is that the 205's will be better for me; considering the more usable power band. The 225's might give more on the top end, but will lag on the low end. I assume due to the lack of ability to feed those heads at lower RPM's?

00Vette

iTrader: (4)

Great info. Thanks. I'm thinking I'm gonna go with the 205's and try the g5x3 cam, with duel electric cut-outs and 150 wet N20 on it. I got a little extra cash coming and I want to spend it right this time. I'm gonna keep doing research before I buy though! Thanks to everyone for there inputs. Big help!!!!

prostock_bigblock

iTrader: (11)

exactly same for my old mods , except for a LSX 90mm ,Tb90mm , x-pipe true duals, 42 inj , mass air , stage 3 flywheel +clutch I did 10.61@1/4 and put down a 459 rwhp.

with a 150 shot I guarantee a 10.1 to 10.4 range .
In short words GO FOR THE G5X4 , if it is not your daily use ............

mike c.

iTrader: (1)

00VETTE-the AFR heads and the x3 cam picked up 47hp(stang dyno)over my ls1 ported heads and x2 cam.