ne14a6t9

Its probably GTP that has the same flow bench as tea, I read it in a post a while ago that brian tooley stated that tea and gtp have the same flow bench, but gtp also gives 320 flow numbers and when flowed on thunders supeflow bench they flow 300. but gtp are the most proven head on the market, It just seems everyone claims 300 cfm but dont get the peformance of a 300cfm head, theres a guy with a new thread up top that only did 396 with tea's and 232/236 cam, down a good 30 hp if you ask me, it just seems alot of guys are disapointed with there results with tea's, but thats why they wont be on my car, if your happy with your heads and feel you got your dollars worth than so be it

99 Black Bird T/A

iTrader: (4)

Seems like this is a flow bench thread so I'll post my TEA data. Not meant as bash, it's just what I learned working with my TEA heads. In a nutshell, TEA heads are good, but I think there is more to be had with hand porting touch ups by a good porter to would make them better.


lift..Intake TEA........Intake SRP....... Difference

.200 140 134.5 5.5cfm
.300 205 197.9 7.5cfm
.400 252 246.0 6.0cfm
.500 286 280.6 5.4cfm
.550 298 289.7 8.3cfm
.600 303 280.6 22.4cfm

SRP determined highest flow was 292cfm @ .570 lift, flow dropped at lifts beyond .570. The heads stalled at .570

The numbers are fairly close, maybe with in the "difference of flow benches" on the intake except for the .600 numbers. The numbers we got were about 96 percent of TEA stated numbers. SRP was able to duplicate the TEA intake numbers almost perfectly (within 1 cfm except for the .600 ones) by not using the bench's correction factor.

Now the exhaust

lift Exhaust TEA pipe Exhaust SRP no pipe Difference
.200 109 102.7 6.3cfm
.300 165 143.4 21.6cfm
.400 207 171.5 35.5cfm
.500 235 191.3 43.7cfm
.550 248 195.2 52.8cfm
.660 255 200.9 54.1cfm

My exhaust only flows about 79 percent of the TEA claimed cfm. This more than a 20 percent difference. SRP findings appeared consistent with Topfig's ( https://ls1tech.com/ubb/ultimatebb.p...c;f=1;t=008327 ) for .600 lift. SRP commented the exhaust ports looked almost untouched. SRP's the measurements taken confirmed their observations on the exhaust ports. This agreed with the exhaust flow numbers.

The exhaust flow numbers were way different. I don't see how pipe on exhaust could make 50cfm or more difference.

SRP Percentage exhaust flow to intake flow

.200 72.4
.300 72.4
.400 69.7
.500 68.1
.550 67.3
.600 71.5

The intake/exhaust percentage was in the 80+ range based on the TEA numbers, not the low 70's & high 60's. TEA's excellent exhaust flow had been the corner stone of the my heads and cam package. I thought the TEA exhaust numbers were a little high and maybe 10-15cfm higher than what SRP would find but not over 50cfm too higher! I selected the TEA because I wanted to try a medium reverse split (224/220 or 226/222) cam.

I used the heads "as is" and went single pattern, but I think conventional split to crutch the exhaust flow would have helped my car with the heads I have. I know others find ~230cfm on exhaust without a pipe...but that's not what my heads did.

Reverse split for my car pretty much went out the window based on the data. I didn't have the $$$ at the time to get SRP to touch my exhaust ports.

I can also dig up some flow numbers with the LS6 intake in place if anyone wants to hash on that too.

ne14a6t9

99balckbird. great post. who is srp? what flow bench do they have? it doesnt look like your heads are as bad as other's that had thers flowed on an independant bench. do you agree that TEA should be truthfull about there flow numbers so people can properly match there cam to them

98TAauto

iTrader: (2)

Mike M, i know that TEA's are flowing lower than expected on other benches and that Brent/Brain tell people that also. But also you have to keep in mine GTP, MTI and other heads have flowed lower on different benches also. Its not just TEA here guys I think everyone likes pickin on TEA cause they sell heads for 1000 less than most other brands and there must be a reason they are 1000 cheaper to them.....

Fireballs car flowed in the 310's I think on one bench, then 280-290 on another(cant remember exact details). But those were GTP's I believe. So there upper lift was off 20 or so!

mine peaked 302 and 265 but that really means squat to me cause ill never see .600 lift. The only thing that does mean anything to me is knowing ive gotten a set of track proven heads and hoping I see sub 11.2's NA this fall

H82BBad

let me guess they were flowed by a company that wanted to do him up a new set right


lets see Mike you also say you run 10.7 with a good shortblock,AS heads and cam and a superchager.! damn 124 mph even! wow 4 mph more than my heads and cam setup. Is it your supercharger slowing you down or your heads?Or your tune etc.Seems to me as if you are bashing the wrong head porter

99 Black Bird T/A

iTrader: (4)

SRP is a small shop in North Carolina that has extensive experience with LS1 engines.

Please lay off of bashing TEA, we can discuss facts and data without bashing.

99 Black Bird T/A

iTrader: (4)

BTW the only intake flow numbers that actually matter are the ones with the intake in place and NO ONE give those out because they aren't impressive. Who cares what it flows without the intake. When the heads are on the car running, the air will be passing thru the intake.

H82BBad

what happens when they release a new intake
will the heads that perform well with a marginal intake do the same with a killer intake in place?

mike m

iTrader: (6)

hey h82bbad are you a lil slow? can you read? if you took the 2 seconds it takes to read my sig you would have understood that the 10.74 was @ 3800 lbs and was with an old set of jpr heads. my car has not been to the track yet with the AS heads, rain is holding me back here. and my car has gone 128 mhp. as for my built short block its still a 346 with some heavy duty parts. so tell me h82bbad whats up with your old setup? 3400 lbs you better have been a cam only car.

H82BBad

hey Mike M are you a lil slow? can you read? if you took the 2 seconds it takes to read my sig you would have understood that the 11.31 came from a raceweight of 3400 lbs with a 216/220 cam and 3.23 gears.

also da at time of my runs ranged from 900 to a best of 780 that day.Now correct them down to the -1500 feet DA's some people have gotten there best times at. Hmm

Notice I had no power adder.....must be a big supercharger to add so much weight

so your only changes have been a beefed up short block and heads now?were the JPR heads stage 2? same cam. I can understand you being angry. If I had a supercharged heads and cam car that went 10.70'sat only 126 I would be pissed too
Bone stock my car weighed around 3520 with me in it.

BTW your sig doesnt state with an old set of JPR heads.

mike m

iTrader: (6)

i have the same lil 216-220 cam as you. and i was the fastset vortech supercharged car for a year hmm oh wait i still am. why dont you go get yourself a vortech or a 150 shot and bring some $$$$ and try me out. have you weighed a stock trans am full interior roll cage 12 bolt, vortech weighs almost 80lbs. nothing from my car gets removed to race. its a street car not a gutted out waste. and im sure my car could have easily been a 10.50 car if i wasnt running soo lean to break a chunk out of a piston and bend a rod. yes there was problems with my tuning. thansk for pointing it out. but this was also a year ago when there was alot less r&d on these cars. and for a 120lb guy you talk pretty tough. you should change your race weight to 3520 in your sig. its decieving. as for my old jpr heads they were very mild. as for it was his 1st set of forced induction heads on a ls1. Im sure right now he could do a sick set compared to the last ones. and why would i want to put what all of my old stuff is in my sig. and i ran my car on a high 70 degree day with a crappy da. it was around 1500+

Phil99vette

iTrader: (11)

Not to add fuel to the fire but my Corvette in full weight, pump gas and 100 shot went 10.8 @ 134 with a measley 1.63 60' in 1500'. Oh that was with Total Engine Airflow heads and short shifting. The car has at least .3-.6 left from driving and tuning.
Phillip

H82BBad

wow 134 mph thats what I am talking about.and on motor you almost have the same mph as him with heads cam and a supercharger! ROFL
BTW I don't weigh 120 I weigh 217.
My car was 3400 with me in it at N vs S shootout.that was after adding a tubular front suspension. It less now no doubt as I have added some monocoque rims all the way around. I have full interior also.and all factory options ie ac heater,aibags etc.I guess i just have a light car.

mike m

iTrader: (6)

hey phill you have a stick right? ok different story, h82bbad enough talk, this was my old setup with a major tuning porblem running lean, i borke the motor casue of it. lesson learned in my part, but i guess its the only edge you got to talk about my OLD setup, my car is a totally different car now. so if you wanna talk about the past thats fine. go get your car done put the biggest shot on it your car can handle and we'll meet up some time.

Phil99vette

iTrader: (11)

I wasn't trying to stir the kool-aide but I guess you took it that way. When my car was going consistent 10.8s I had a master cylinder problem but hey I aint bitching. The air quality was bad and the track prep sucked. I dont need a big shot of nitrous my 100 shot will be fine. Expect 140mph traps out of my new setup and 1.4 60's on a prepped track. Oh this is using a set of sub-par Total Engine Airflow heads. TIA
Phillip <== cause I have no hard feelings :yesnod:

Phil99vette

iTrader: (11)

bodhi,
Sorry you thread is has gotten off topic, I suggest get whichever heads AS or TEA(whichever is cheaper) and run the correct cam. I would suggest a reverse split with the TEA since I have experience. Good Luck.

99 Black Bird T/A

iTrader: (4)

I hope they do a lot better with a killer intake than the 250 cfm they did with my LS6 intake for sure.

ne14a6t9

damn they only flow 250 cfm through an ls6 intake, does anyone know what the better stg2 heads flow with an ls6 intake

after reviewing this thread and a few others I remember, I dont feel that tea is lying about there flows, I just think there flow bench is 20-25 cfm lower than a superflow bench, thats the way it seems. tea is advertising what there bench reads, there dyno's seem to be on the low side compared to others but so is there flows on a superflow bench. All in all, it seems that guys are a little dissapointed but happy with there heads and service that TEA provide. and I take back what I said about them lying.

H82BBad

Have you seen the flow comparrison between gtp and tea done up top? at .550 lift he said there was a 1.2 cfm difference between the two heads.
Now when there is only a 1.2 cfm difference between 2 heads that could be the leakage or whatever. TEA doesn't flub there numbers. I know this for a fact.

LS1derfull

I have tested my port work with intake manifolds attached, i would be happy to share results.What i think would be most usefull to you guys is that i have ported LS1 heads to different flow levels, when LS6 intake was bolted in place, most of those gains were moot. Next i have customers who have dyno tested these different levels of flow, and they are all within 5 to 10 rwhp of each other.Some even have more cam than others.LS6 intake is capping flow of heads around 280cfm at peak, this really seems to equalize power levels of the different heads. Tuning, compression, and combo choices will make greater difference than choosing best flow head from any of sponsors on here.When better aftermarket intakes become popular than this will change some.Head velocity would be a consideration between competing heads on this board,accelleration of car is a variable that would show up between different approaches in head porting with similar total flow numbers. I hope this helps, i would be happy to flow test unbiasedly anyones heads on here, i can arrange as many as maybe 6 board members to witness it also.