pewter 01 SS

iTrader: (5)

I'm getting a 408ci motor with afr 225's 66cc , the motor is going to have everything needed to make good power, meaning rockers, 1-7/8 headers, 42lb injectors, fast 90mm set up and the heads. Do you guys think that I'm going to get good rwhp with the heads that come directly from afr. the reason why I ask is because I've heard that its better when you send them to get ported more, but on the other hand I've also read that you can loose power if their not ported correctly... So if I stay with heads as they are am I still going to get good hp..

DrkPhx

iTrader: (15)

Run them right out of the box (or mill them) and you will be fine. The port work on these are fantastic from AFR. If you have someone hand port the CNC version you run the risk of ruining the heads and having very expensive paper weights.

Mr 35th

534hp is what I got with that setup.

pewter 01 SS

iTrader: (5)

hopefully my power will be somewhere around yours..

PREDATOR-Z

There is no AFR 225 66cc, are you milling yours that much?
.006x8=.048 mill
That will hurt your flow #s IMO better to wait for the 62cc version to come out.
You can ask Tony Mamo, he will tell you the same.

SiL3NtXWS6

iTrader: (17)

I made 501whp with an ls6 intake and afr 205's (enlarged chambers) on my 408 , so i'd imagine you'll make a lot more power.

Silver02

iTrader: (1)

If you check out A&A corvette's web site, it shows they sell ported AFR heads. They list the flow numbers on the web site.

SCREAMIN

Guess it depends on which kind of dyno too, right? AFR 225s should rock on a 408!

dame

iTrader: (3)

call up TEA

Tony Mamo @ AFR

iTrader: (13)

Has ANYONE posted above average numbers with reworked or modified AFR's?? (Note: above average when compared to an out of the box AFR in a similar combination...).

Ive seen a few results that might have went the other way....

Save your money guys....IF you ran across the "holy grail" set of ported heads (big "IF"), AFR castings or otherwise, and combined it with the perfect combination to take advantage of them, perhaps you could find a little more horsepower. But the likelihood (and cost) of that happening is slim in my opinion based on what I have personally tested and what we have witnessed at various shops and on the Internet in general.

You might be spending a little more money for the AFR's but your already getting a top shelf extremely optimized efficient piece with proven performance. Spending more money, IMHO at best is the point of very diminishing returns, at worst you just spent more money to go slower. Choose your combination wisely with an out of the box AFR CNC head, couple that with a good install and tune, and you are sure to make big numbers when the smoke clears. If not then at least you can blame it on me and not yourself....

Tony M.

smask04C5

iTrader: (1)

Looking forward to receiving 62cc 205's from AFR. I will install with VHP/Crane 216/224 Boss 2 camshaft, .040 cometics and various other crane components. Will keep you posted of results. Tony and Jason, thank you for your professional assistance.

dragonZ28

iTrader: (32)

But he's looking for the best case scenario. Call up brent at TEA. He'll give you all of the info you need to know about porting the AFR's. Here are their advertised specs, and a link to their page:

http://www.totalengineairflow.com/pr...gmhead/afrall/

TEA AFR Stage 3 LS1
Lift Intake Exhaust
.100" ---68.1 ---55.1
.200" ---141.2 ---123.9
.300" ---207.5 ---187.1
.400" ---261.6 ---241.1
.500" ---304.6 ---268.3
.550" ---323.4 ---275.4
.600" ---341.2 ---277.8
.700" ---346.0 ---282.2

Best case scenario, you pick up cfm under the curve and gain great HP numbers. AFR's are very pricey just by themselves, and TEA's ported AFR's are even more - but they are better.

I would buy a set of TEA's 6.0L stage 3 heads before I bought the regular AFR 225's. The flow and price advantage are both on the 6.0L side.

dame

iTrader: (3)

these are going on my 408

jrp

iTrader: (16)

thats funny, sounds just like what PPD did, and we all know how that turned out.....

Silver02

iTrader: (1)

My car has AFR 205's and it put down 439 rwhp through an auto trans. Tony knows what he's talking about. My car also has gobs of low end torque. The stock AFR's work real well.

dragonZ28

iTrader: (32)

Yes, but you can't justly classify all based upon the results of one. TEA knows their stuff, as I'm sure AFR does as well.

2c5s

iTrader: (11)

Better peak flow and weaker mid flow..... And how do you know they are better????? Have you owned both heads and compared????? I have a set of the AFR castings with the TEA port on my 408, when the 62 AFR's are available, I'll do the swap and post the results. Also, I'm willing to bet there are a few AFR/TEA heads on Mamo's head flow post..........

I just love these guys that post which product is better when they have never owned "the product".

BrentB@TEA

he has a 12:1 AFR and your going to blame the heads for his missing torque? Show me a set of 3.9 bore heads that are better than the set on PDD's car. He has some major tuning problem.


Jeremy I know you are a TEA dogger. You always have been even though there has been no reason too. The problem with you is you were to cheap to buy heads from us.You thought you could buy heads that we CNC machined from someone else and get the same quality and flow as we get for less money. You bought heads that were "suppossedly" CNC ported by us and even that has been proven doubtfull. So try all you like to dog us out. The facts are if you had not been trying to save a buck you would not be disapointed with your current head choice.
You don't have TEA heads. We only did the CNC work. As soon as another company touches a die grinder or does a valve job it is no longer our head. When we do a head for another company it does not get a TEA logo unless we do all of the flow related work on that head.

As far as the AFR 225 head it is killer out of the box and flows very well. I just wish they had a 4.030 chamber instead of using the 4.125 chamber on them.
AFR has really concentrated on mid lift numbers and it shows in the fact that stall sometimes before .600 lift. Just by changing valves we have seen a 25 cfm improvment at .600 lift but it cost you in the mid lifts.
If you have an AFR 225 head I would run it as is. We do not ussually modify heads already ported by AFR. We use our own programs on unported bare AFR castings.

WS6FirebirdTA00

iTrader: (33)

what cc are they? did you mill them at all?

Silver02

iTrader: (1)

Tony knows the details on how much they were milled but I believe they are 66cc.