I see how it is 
The wait is over...Stage 3 AFR Details inside
TECH Addict
Joined: Jul 2002
Posts: 2,261
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Originally Posted by HumpinSS
lets see some numbers. Anyone can port a head but will it perform is the question. Looks like you have to rev the **** outta this head because of the large runner
joel doubtful, its a cnc program, then a handfinish. they'd actually have to modify the program to work with the 225's, since the 225's have already been cnc'd @ afr. thats the whole point of getting them from tea....you skip the afr program in total, you just get all the benefits of the afr casting.
Obviously, Brian H or Brian T chime in if I'm totally off the mark
Obviously, Brian H or Brian T chime in if I'm totally off the mark
Last edited by cyphur_traq; Jul 28, 2004 at 01:08 AM.
That's right. We use the bare castings before they're CNC'd at AFR. Obviously this program works. We have had a LOT of calls yesterday. I will be getting with Brian today on most of the calls from yesterday and finish working out all details. I forsee a certain TEA AFR headed car at the Thunder Shootout.
Originally Posted by cyphur_traq
doubtful, its a cnc program, then a handfinish. they'd actually have to modify the program to work with the 225's, since the 225's have already been cnc'd @ afr. thats the whole point of getting them from tea....you skip the afr program in total, you just get all the benefits of the afr casting.
Obviously, Brian H or Brian T chime in if I'm totally off the mark
Obviously, Brian H or Brian T chime in if I'm totally off the mark
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Originally Posted by Brian Tooley
That would be correct, we also have a 228cc program that flows 320 @ .600" on a 3.900" bore and would be awesome on a stock shortblock, unfortunately it is still the same basic price.
These sound awsome !! Need a test car ?
I would love to see what kind of gains I would get over my current setup. 
Is the valve stem a stock LS1 size?
What size spring pockets are you cutting in the heads?
I already have a set of stg 3 heads with ferrera 2.08/1.60 valves and I have Isky 1.550" OD springs and would want to reuse my parts (less than 500 miles on them).
What would a bare head (that has been fully machiened and ported) cost?
What size spring pockets are you cutting in the heads?
I already have a set of stg 3 heads with ferrera 2.08/1.60 valves and I have Isky 1.550" OD springs and would want to reuse my parts (less than 500 miles on them).
What would a bare head (that has been fully machiened and ported) cost?
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Two questions.
1) Any plans to flow them on a SF600 so that we can see how those numbers stack up against some of the other shops out there?
2) Is the CNC port you are using one of your existing programs for a GM casting that you are simply running on the AFR head, or are have you optimized a design that takes into account the improvements in the AFR head? Are you going into the floor of the port, opening the runner up, or doing much bowl work? The AFR head has a venturi in it that really narrows the runner down. Is that still in place or are you cutting that out?
I'm not asking for all your porting secrets, just wanting a better understanding of what improvements you are making to the head and if you care to comment on what you are doing, and why you feel it is the best way to move air in these heads.
1) Any plans to flow them on a SF600 so that we can see how those numbers stack up against some of the other shops out there?
2) Is the CNC port you are using one of your existing programs for a GM casting that you are simply running on the AFR head, or are have you optimized a design that takes into account the improvements in the AFR head? Are you going into the floor of the port, opening the runner up, or doing much bowl work? The AFR head has a venturi in it that really narrows the runner down. Is that still in place or are you cutting that out?
I'm not asking for all your porting secrets, just wanting a better understanding of what improvements you are making to the head and if you care to comment on what you are doing, and why you feel it is the best way to move air in these heads.
Originally Posted by J-Rod
1) Any plans to flow them on a SF600 so that we can see how those numbers stack up against some of the other shops out there?
, Sounds like your talking to some of our competitors on this one, our flow bench is right in line with everyone elses. I have been flowing heads on this bench for 11 years, I have had my heads read BOTH HIGHER AND LOWER on SF 600 bench's. BTW, we have only flowed one competitors LSx head that broke 300 cfm on our bench and that was a LS6 head from CNC in FL.
Originally Posted by J-Rod
2) Is the CNC port you are using one of your existing programs for a GM casting that you are simply running on the AFR head, or are have you optimized a design that takes into account the improvements in the AFR head?
Originally Posted by J-Rod
Are you going into the floor of the port, opening the runner up, or doing much bowl work?
Originally Posted by J-Rod
The AFR head has a venturi in it that really narrows the runner down. Is that still in place or are you cutting that out?
Originally Posted by J-Rod
I'm not asking for all your porting secrets, just wanting a better understanding of what improvements you are making to the head and if you care to comment on what you are doing, and why you feel it is the best way to move air in these heads?
After Thunder Racing outlawed my raised runner heads, I went ahead with the AFR castings, as I knew they would hold a head gasket much better then any other LSx head. The best way to move air through these heads? Who else has a Stg 3 head that consistently flows 340+ cfm??? Not really saying it is the best, but I would say that I don't know of anyone getting this much airflow out of a LS6/AFR head.
Last edited by Brian Tooley Racing; Jul 28, 2004 at 06:52 PM.
Originally Posted by Pewter'00Z28
ttt, lol
0.200 124
0.300 180
0.400 235
0.500 268
0.550 275
0.600 279
The exhaust should be in this range. When we post flow #'s we go a little conservative, if we post the best #'s we have ever seen, then we have to try to match the best every time, which can't be done. Even though they are CNC ported, there are the variables of the valve job and the hand blending, we have even seen valves flow different from batch to batch.
On The Tree
Joined: Mar 2002
Posts: 136
Likes: 0
From: Shelbyville, KY
Originally Posted by Brian H @ TEA
These are the flow numbers from our Bare AFR castings with our Stage 3 CNC program and blended by hand. ....
Lift CFM
.100" 68.1
.200" 141.2
.300" 207.5
.400" 261.6
.500" 304.6
.550" 323.4
.600" 341.2
.625" 346.0
Lift CFM
.100" 68.1
.200" 141.2
.300" 207.5
.400" 261.6
.500" 304.6
.550" 323.4
.600" 341.2
.625" 346.0
GEEZ.... Man - I wish I could have gotten these from you guys back when I got my 5.3L Stage II LS1 heads! Congrats on the great numbers. I love my heads - please give my regards to Brian Tooley!
Originally Posted by AllCammedUp
GEEZ.... Man - I wish I could have gotten these from you guys back when I got my 5.3L Stage II LS1 heads! Congrats on the great numbers. I love my heads - please give my regards to Brian Tooley!
Glad to here from you, and I'm glad that torque monster is still around.
No wonder why you guys at TEA have been so quite on here lately. All that material you removed must have taken atleast 40 hours on just one head. Im curious as to wheather you flowed a cnc'd AFR 205 head on your bench. just for comparison.
How about a GP on these, I was going to wait for the AFR 225 head for my FI setup.
How about a GP on these, I was going to wait for the AFR 225 head for my FI setup.
Originally Posted by mike m
No wonder why you guys at TEA have been so quite on here lately. All that material you removed must have taken atleast 40 hours on just one head. Im curious as to wheather you flowed a cnc'd AFR 205 head on your bench. just for comparison.
How about a GP on these, I was going to wait for the AFR 225 head for my FI setup.
How about a GP on these, I was going to wait for the AFR 225 head for my FI setup.
Brian,
I am considering AFR heads for my stock cubed, 9.3:1 compression single turbocharged '03 Z06. The camshaft that I will be using is a 228/223, .575 lift, 115 lsa turbo spec cam. After seeing your results, I am now unsure about which AFR heads to get. I was originally waiting for the 225's. I'm running 12-14psi on pump gas (94 Octane) and making about 650rwhp with my current set of ported ls6 castings and MTI B1 cam. How much would be gained/loss by going with your worked 205 heads vs. a set of your worked 225's?
I am considering AFR heads for my stock cubed, 9.3:1 compression single turbocharged '03 Z06. The camshaft that I will be using is a 228/223, .575 lift, 115 lsa turbo spec cam. After seeing your results, I am now unsure about which AFR heads to get. I was originally waiting for the 225's. I'm running 12-14psi on pump gas (94 Octane) and making about 650rwhp with my current set of ported ls6 castings and MTI B1 cam. How much would be gained/loss by going with your worked 205 heads vs. a set of your worked 225's?