vettenuts

iTrader: (4)

I have read and re-read the thread on the TEA Stage I heads. Several questions were asked and were never answered so I wanted to start a clean thread and hopefully get more information as these heads are of high interest. I would like to see the flow numbers and port sizes for both the intake and exhaust.

There was a post in the original thread that stated a comparative flow test between these heads and the AFR 205's was going to be done, but the results were never posted either. Hoping this information is all available, as I like the idea of being able to install the lighter LS6 stock valves in a high flowing head as an option.

Mike@TEA

These are the flow #'s that came off of a customer's heads done in september. I still have not heard how the car performed at the track.The intake runner volume is 220cc's. I am not sure what the exhaust runner volume is, I will have to measure one I do know it is not huge by any standards. This set does not hit the 300 cfm mark but is still very strong through the mid lifts. And still uses the 2.00" valve.

TEA Stage 1
intake exhaust
.100 71.0 52.6
.200 136.4 109.2
.300 207.2 159.1
.400 249.1 203.8
.500 280.1 230.8
.550 288.5 239.2
.600 291.1 245.2

AFR 205
intake exhaust
.200 140 112
.300 200 170
.400 251 203
.500 281 221
.600 298 230


The AFR #'s are pulled from their site I do not have a 205 head here that I can flow to compare both on the same bench and do not want to say that the #'s are apples-apples but you can get an idea of the performance potential for 1095.00. The LS-6 valves are really a neat upgrade and are worth some power if you can get them for the right price.

PREDATOR-Z

Price went up?
Or are these with 918's and titanium retainers?

Tony Mamo @ AFR

iTrader: (13)

Hey Mike

Just a quick FYI here....

While I feel our intake flow #'s are close (bench to bench), the exhaust numbers posted above is really not a "fair" comparison. While I assume it's purely equipment related, the exhaust flow on your equipment reads higher than most for some reason. You guys posted numbers awhile back showing an out of the box 205 flowing in the mid-high 260's on your flowbench (flattering but no way will you see those numbers on a SuperFlow 600 or 1020 bench). Don't have time to dig it up but its here somewhere (there were a few posts similar to that actually, but one I clearly remember).

Not looking to start any BS here but if number comparisons are going to be made, they should be made on an even playing field (preferably off the exact same equipment, or at the least the same brand of equipment but that still leaves variables with fixtures, radius plates, pipe/no pipe, etc.).

You guys put out a good product and the TEA head in question certainly represents alot of value, no argument about that....but seeing as a lot of people place a large emphasis on flow numbers alone (which doesn't tell the whole story), its important what's represented is a reasonable comparison.

Thanks,
Tony M.

Mike@TEA

Tony, you're right I should have mentioned that our head was flowed with a pipe on the exhaust and I think AFR's #'s are without that's probably a 20 CFM difference. Also the AFR head uses a 1.6 exhaust where our stage 1 only uses a 1.55 definitely not an apples to apples comparison as I stated.

ATLHwyRacer

iTrader: (5)

i would like to know also please

Phil'sC5vette

iTrader: (4)

cant go wrong with either head.

PortPros1

I'd like to throw my hat in the ring here, check out our website at www.PortPros.com. We have flow sheets posted comparing several different companies cylinder heads to our own-ported GM castings. All the flow work was done on the same bench by the same operator. I think you'll see a fair comparison. Flow is what sells heads is seems, but as the man from AFR said it's not the whole picture. Having well balanced flow between the intake and exhaust, the type of valve job, seat angles and angle width depending on the application is also very important. It's why we build our heads to order one set at a time.
If you have any questions about our products please e-mail, pm or call.
Thanks,
Harold