I believe you Greg. You and I have talked before and I feel confedent in what you have to say. The problem I have is its the same machine, 600, same head, different operators and different places of location. Something is amiss. Another thing is before and after numbers is were it is at. I believe a stock LS1 head flows high 230/170 numbers stock, anything around or above 300/215 is all you need, especially on a car that is used on the street.

 

This flow bench thing has been with us for a long time, and will probably be with us forever.

Most flowbenches I compare with are within 5 cfm of mine, with my bench usually being the "happier" one. But there are some that are 15-20 below mine, and some that are 15 higher than mine. I can't explain it.

With the situation I mentioned before about the LS6 head on 3 different SF600 benches, both of the other benches had been calibrated with the same set of SuperFlow calibration plates and read within just a couple of CFM of one another. With the head mounted, it was a different story. It flowed X on mine, +4 on one of the calibrated benches, and was over 15 cfm down on the other calibrated bench because it went turbulent prematurely at .650" lift.

I don't know WTF is going on, or how to fix it. Neither does SuperFlow.

 

I am not condemning anyone, and while I would like for the numbers to be better, I had them flowed more for the opportunity to learn something than anything else. I also thought some other people might be interested. The more info we have, the better off we all are.

While it may not be reasonable to compare the flow numbers from above to TEA's numbers for the various reasons listed, I think it will be pretty reasonable to have the same person (who is a very reputable person working at a reputable Dallas/Ft. Worth area engine builder) flow the heads on the same bench, while trying to do everything the same. I will say that a total of four ports were flowed, two from each head, and while they are all pretty close, the numbers above are the *best* for any of the 4.

I will post the flow number for the PP heads once they are flowed, and am considering having one of my stock 241 casting heads flowed as well. I *may* get the chance to flow one the newer style PP heads at the same time.

Thanks,
Chuck

 

Hey man, I wasn't knocking your flowbench operator, so please don't take it that way.

I was just sharing some of my experiences, that's all.

 

98_1le you said you bought the heads from another board member, how long ago was it when he bought the heads, have they been ran on an engine and, has the entire port been sanded or not?

what type of orface was used?

 

i've got stock heads but when i get some it will definitely be teas.i'm sure their flow numbers are no more inflated than anyone elses.i've been to their shop and they know their stuff .they also do work with judson at SAM so i'm sure their numbers is pretty acurate.

 

Greg, I did not mean to come across like that.

TD, the heads were bought 9 months ago and have 2500 miles on them. They had been cleaned up and look perfect. I will have to look and see if the ports are sanded by the valves later. They are much smoother than the PP head at the outside, and the chambers are polished. photo and another.

 

got any pics of the port work and chambers, just curious how they compare to mine (not TEA)

exhuast

http://ourworld.cs.com/jrp98ls1/heads/DSC00376.JPG

intake

http://ourworld.cs.com/jrp98ls1/heads/DSC00384.JPG

chamber

http://ourworld.cs.com/jrp98ls1/heads/DSC00381.JPG


bowl area

http://ourworld.cs.com/jrp98ls1/heads/DSC00363.JPG
http://ourworld.cs.com/jrp98ls1/heads/DSC00366.JPG
http://ourworld.cs.com/jrp98ls1/heads/DSC00368.JPG

 

JRP, what kind are yours? Nice pictures.

 

Those look nice. My exhaust ports are smooth, but not as shiny as yours. They are more grey. The intake ports look very similar, and my chambers are more smooth. I do not have a digital camera, so I can't post any photos.

 

i cant wait, should have the head flow/specs by the end of the weekend. then the data's off to the cam grinder . its no fun having damn here 10k parts sitting on your floor instead of in the car


to the rest of the guys there FFHP stage 1 heads and for the price i paid i cant complain in bit

 

been chosen for a while just dont have the data to give him yet.

 

Buncha experts in here. lemme tell ya..

FIrst off, peak flow #'s mean absolutely nothing. Any head can flow 9000000000000 cfm at peak lift, but if the low-mid lift #'s are ****, the setup will not perform.

You need to be more concerned with your mid lift #'s, which look pretty damn good. Those heads will make power, have no worries. Even my heads dont flow much up top, but the mid lift is stout which is what makes the power. NOT PEAK CFM......

 

In the true spirit of LS1TECH........PROVE IT!!!!!!

 

I hope to god you were jokin dude.

People have gotten caught up in yet another "war", the flowbench war. Peak flow numbers look nice on paper, but if you're not gettin the mid-lift numbers like D said.....you're SOL. Can't go wrong with either TEA or FFHP. JRP, ya definitely have some nice heads there. BTW, its better to have 10k worth of parts on the floor then not at all

 

I'm willing to bet 98 1le's heads make as much power(with accordingly similar mods) as the Tupach heads do.
I love my TEA heads...

 

TuPac got shot up be TEA's guys...

 

wow maybe thats why your running so fast!

What most people fail to understand there can be 10 cfm or more just on the difference of the way the clay is shaped on the intake port opening. was the rocker bolt hole filled with clay? Plus the difference from one flow bench to the other.

TEA has changed the valve job to stop the port from stalling after .550 so your set might be from before the change.

 

Nice pictures Jrp,I see they left the swirl ramp in partially??And they cut the exhaust valve guide down on outside of the guide,I anxious to see the flow numbers!!

 

master dill what kind of combination do have? do you have heads what kind? what kind of power are you making?