dr_whigham

iTrader: (49)

Phil has a set of Trickflow heads he does as well. Might want to give them a look. Either way, if you go with the TFS or the RHS/Dart that he does that'll achieve your goal of "no downtime" and give you an aftermarket head to boot.

Give Brian Tooley a call as well. He has some STELLAR prices on TFS 220's that he hand ports. One stop shop with him. You can get everything from one place. Just pick up the phone and call him.

68BBChevelle

iTrader: (12)

Tea was Brian Tooley's business he sold it to summit. From research ive done an AI head will cost u 1k and you still have stock valves and springs. On Tea Heads the can be done for 1300.00 and you get Pac springs and bigger aftermarket valves. Seems like a no brainer to me.

senicalj4579

iTrader: (41)

I love my TEA ls6 stage 2 heads. Mike was awesome to deal with. They will get the heads (or these) on my next build. I might even have TEA do some trickflows.

SnIpEz

iTrader: (4)

Err what? No.

Besides, PRC heads aren't meant to be ported.

slammin86

iTrader: (4)

Really? With a port job these heads can gain 70 to 80 hp? That seems like tons.

Noted.

Do you know what his prices are?

You are correct. But what is bad with keeping stock valve size?

Noted.

That number seemed high to me too.

Coonass350

iTrader: (19)

yeah would think the PRC # is a little off lol

The AI head work is $995 then if you go with BTR springs for $300 thats right at $1300..which is the same as the TEA stg 2 heads..and they both sell the cores for $600.

I still vote AI lol

slammin86

iTrader: (4)

Would you take AI over the prc heads?

showvette

Lloyd Elliot. My LE ported 241's flow 310/220 @ .600". Lloyd included new 2.02"/1.60" valves and Lunati double spring kit for what AI wanted just for machine work...

Frank

mac62989

iTrader: (1)

Is there any real world date for those PRC's yet? Its been awhile since I looked. Slammin, AI's prices for their aftermarket castings are on the top of this page. http://advancedinduction.com/LSX/AiLSxCylinderHeads.php

Kingc8r

iTrader: (21)

Phil at AI quoted $500 for 799s, which is a good price considering on here they sell for $350 ( not common ) to $450. Then you'll have to pay for shipping to you then reshoot them to AI. Unless you can get them to ship to AI...

I'll be following this thread closely.

Camaro99SS

iTrader: (4)

I have AI ported 241's with welded chambers (58.5cc) and my experience with Phil was first rate. Granted I did wait ~5 weeks for my heads to come in, but I exchanged numerous emails with hair splitting questions, and Phil was very clear and concise. If you need to talk to him, he'll schedule a time to call you. I did this, and I was on the phone with him for ~ 1.5hrs past 9:00pm. He's a class act and a straight shooter. The quality o machine work and attention to detail you get is second to none, one glance at my heads out of the box made it obvious.

Another thing about Phil, he's about as staunch of an advocate of a small port, high airspeed efficient design as anyone in this business. Notice the torque curves on alot of his setups even on a h/c 346...

FWIW, I looked heavily into TEA and called them. I left a message and waited several days before they returned my call. Good outfit with some intriguing designs, and they too were helpful, but it took them just as long to get back with me as Phil.

In the end you won't go wrong with either. Keep us posted!

Jason

02TransAm/Batmobile

iTrader: (32)

Interesting thread. I am in the same boat as you are slammin86 and here is my take:

PRC 225 As Cast: - $1600

.100" 68 CFM 56 CFM
.200" 145 CFM 113 CFM
.300" 210 CFM 164 CFM
.400" 257 CFM 200 CFM
.500" 300 CFM 214 CFM
.600" 318 CFM 229 CFM
.650" 321 CFM 230 CFM

Pros:
- No downtime,
- 62cc from the get-go before milling
Cons:
- The 2.06/1.60 valves will decrease P2V clearances

AI RHS 223CNC: - $1745 ($1845 with PM guides)

.100" 66.7 52.5
.200" 149.4 113.1
.300" 217.6 156.3
.400" 262.7 201.0
.500" 297.3 247.6
.600" 311.4 272.3
.650" 313.6 275.8
.700" 314.9 278.3

Pros:
- No downtime (I think since these are using Phil's Dart/RHS cores),
- uses stock sized valves (Manley Race Master 2.00/1.575),
- 62cc to start out with
- Best P2V clearances out of the three
Cons:
- Need to upgrade the guides to powdered metal which he quoted me an extra 100 bucks,
- new product with no data but his other CNC programs have put out great numbers.

TEA LS6 Stage 2: $1329 (~$1729 if you purchase 243's for ~$400)

0.100 67 54
0.200 139 120
0.300 219 179
0.400 271 224
0.500 308 248
0.600 320 260

Pros:
- Reputable company
- easier communication
Cons:
- Since these are based on 243's, you start with 64.45cc combustion chambers as opposed to 62cc from AI's RHS heads or PRC 225 as-cast,
- More of a hassle since you would have to find a good set of 243's and deal with shipping costs

squirlNUTZ

I like the fact that stock valves, and cnc'ed heads make great power. Piston/valve clearence is important and with a larger valve it will decrease simply from the angle the valve opens into the bore. If you want larger valves I'm sure Phill (AI)can hook you up. I've had several emails with Phill in the last few months and he never tried to sell me anything, just gave advice. All the different options makes a decision hard to make, so..... I have emailed and PM'ed http://www.briantooleyracing.com/
Since I will use his springs, lifters. Pushrods and cam shaft.
Dr_Whigam made a great point a out the 230 TFS head. For around $2,000.00 you can get one of the best lsx heads there is.
My opinion is can't act Brian tooley, for valve train parts ( don't waist money on LS7 lifters they are stock replacement for all ) New BTR lifters, pushrods and camshaft for a pair of AI ported TFS heads, or what ever Brian recommends. I think you'll be content. Sorry for the long ramble but seems you want to maximize your combo. Maybe it's time to sell your ls6 heads?...

02TransAm/Batmobile

iTrader: (32)

Now that I can read the data, the AI RHS seems to be a great middle-ground between the three. When comparing intake flow, the AI RHS beats the PRC 225 in the low-to-mid-lift areas but the PRC's outshine the RHS from .500 and upwards. When comparing the AI to TEA's, the AI's start out strong at .200 but TEA outshines them from .300 and upwards.


. . . . . . . forget it, I'm going to do a dawn Excel spreadsheet so I can visualize these numbers.

SWEET98SS

iTrader: (8)

I went with AI based on the quality of work, not service. I was dumb founded when I went to order that I couldnt talk to them on the phone. In todays world, you need to talk to people when you spend that kind of money. Overall I am happy with my AI heads and cam.

02TransAm/Batmobile

iTrader: (32)

One thing to take into consideration is the different bore flow data:

AI RHS: 28" H20, 1.875 Exhaust, 4.00" Bore
TEA: 28" H20, 1.875 Exhaust, 3.90" Bore
PRC: ???

Wouldn't the increased bore negatively effect the flow numbers? Had it been a 3.900" bore, wouldn't AI's numbers be higher?

Intake:




Exhaust:

ryridesmotox

I'm glad I found this thread. I would have never seen Lloyd Elliot. It looks like he has pretty reasonable pricing... Gonna have to shoot an email his way.

01ssreda4

iTrader: (96)

Those exhaust numbers on the PRCs are

I went with AI. My heads arrived Friday, were completed over the weekend, and shipped back to me Monday. Doesn't get any better then that. I would have no problems running TEA stuff either though.

Coonass350

iTrader: (19)

Yes, I would take AI over PRC any day.

adamantium

iTrader: (3)

what thread is this from? im interested in seeing it.