Anyone that has gotten a set of ET's, have you had the heads flowed to verify what they are doing to what the advertised flow was? I am considering putting in an order for a set to go on my new 402 I'm in teh process of planning out, and would like to see some independant flow #'s, specificially for the 240 or larger size, as I figure that these would be the way to go on a 402.

thanks.

 

I don't know specific numbers but I do know of a shop that purchased heads from I want to say 13-14 companies and flow tested as well as engine dynoed every set.

The owner of the shop told me after his testing the only head he has used since have been ET heads.

 

BeardWS6 and BTL FED have both flow tested theirs. There were some other people that also posted up individual numbers and all of them have been spot on with the ET claimed numbers. Some a few higher, some a few lower, due to diffrent benches in diffrent air conditions.

 

Anyone flow more than one port to check for consistancy?

 

I had mine flowed (215's) and they flow better than advertised.

 

Me too!

No tricks or 4.125 bore testing either!

FWIW ... only AFR and ETP have been accurate in their numbers, at least from my testing...

Ed

 

CNC work should be fairly consistant.

 

Can you share the full flow numbers? And the numbers were on a 3.900 bore and 66cc heads right?

EDC can you post your 215 numbers too?

 

https://ls1tech.com/forums/generation-iii-internal-engine/380816-et-performance-flow-numbers-impressions.html

This is the set I bought (225s) and Force Fed High Performance flowed them on their bench.

 

Tony Mamo from AFR flowed some 240's and the numbers were virtually identical to ETP's advertised numbers.

And Fireball posted this.
Here's the two threads.
https://ls1tech.com/forums/generation-iii-internal-engine/317323-interesting-flow-data-long-thread.html
https://ls1tech.com/forums/generation-iii-internal-engine/470839-just-got-news-etp-225-flow-numbers-added-full-flow-numbers.html


The ETP 240's set a new peak record on Tony Mamo's flow bench!

These ETP heads look like they will give AFR a run for their money.

 

the exhaust port on the ET's is HUGE!!! No wonder that head likes bigger exhaust, guess if I go this route, it definately will only be a matter of time before the 1 3/4 qtp's come off for some 1 7/8's

Another thign I am hearing is that the fast intake, even after porting, is a restriction to the heads as well. If that is the case, then what is the option? I would say the edlebrock single plane, but I don't want to cut the cowl. I would make every attempt and try to have as much cut off the top of the intake on a plane, but it still leaves the question of what to do with an elblow, as that is supposedly a restriction for a n/a car. The 4150 style TB is nice, but I need to be able to run an air cleaner, and I'm not going to cut the entire cowl out to fit one on it, that's just not happening.

Carrie from ET suggested to me to go with the ls7 style head they are amking, the one for a 4 inch bore. I am not sure about the total cost, but I know that an ls7 intake, and a TB that will for for a cable driven car ( my transam) will be needed, ls7 rockers will also be needed, map sensor I think will need changing, fuel rails, and I understand the injector is different somehow. Now some of that doesn't matter, as I was planning on a fast 90/90 setup, as well as a set of 42 lb/hr injectors, but the added cost of a rocker set, and any other stuff, plus the price of the ls7 head is putting me over what I want to spend by a good amount of $ Originally, a set of AFR 225's was the route I was going to take, I cen justify the added cost of the heads, just not sure if I want to spend another 1500 in added parts.. this motor deal along with the trannys swap is adding up to enough as it is.

I wish I would have been able to have my old motor stay together for another year so I could have gotten the car itself finished first, but fate decided that to not be the way.. would have given all thsi new technology another year to settle out, prices to settle, availability, etc.etc.

And now, the 6.2 GM stuff is starting to surface..... AARRGGHH!

 

 

you would think

 

Ive seen cars with ETP 215s and they are very satisfied with results. ETP heads do perform as they say no doubt.

Now, getting a set this year is under speculation. LOL

 

I'm starting to wonder about the 225's for my 402, because if teh fast intake even after proting is a restriction, I wonder if any more head is even useful.

 

Need one of them babies

 

if I could wedge that in without butchering the cowl, I'd think about it. Only problem is I have been reading aroud, and it appears that people that were running fast 90/90 setups are having a hard time getting that setup to make equeal power, nevermind more. That worries me.... alot. That would mean the only other option, is a sheet metal, and I don't know if I want to spend 2k+ on an intake that is not gonna drive for **** on the street.. Sure, my car's headed for off road use only at a real quick rate, but still... I know how those thing are, anything under 4000 rpm and it drives like a 3 wheeled shopping cart in a snow filled parking lot.

 

No you are in the right direction with your build. 225s were designed for cubes bigger than 396ci.

 

The intake is a GMPP and can be setup for EFI very cheaply, the elbow will not hit the cowl and fit under stock hood. ~ 750 $$ with rails/elbow/intake
With the trq you'll make, part throttle effect will not even be noticed.

 

th GM is another option, and it is beign considered along with everything else under the sun, I'm in teh stages of putting the $$ together for the new motor, adn until I have it, I can pretty much contemplate at this point. Originally I was going to do AFR225 and a fast,. and have Tony port it to the heads over the winter, just run it out of the box at first.. but I started looking around, and teh added cost of the et's vs. the power I could make seemed attractive enough to entertain, but after finding out that the fast intake log jams the heads, then I am now looking at the other intake options for the heads, what it would take to get that working, then the possibility of the ls7 4 inch bore heads instead of the 240's... but knowing that I will be adding nitrous to the car, I'm back to thinking that the AFR 225's woudl be fine, with the DP kit All I'll have to do is jet it for a 150 instead of a 100, and I'm sure that 10.20 range of speed could be had with no issues, and the car should still be capable of running high 10's on motor. What i"m hoping for is 10.90 to 10.70 on motor, adn hit it with a 100 to 150, and get teh car to 10.00 to 10.20. I think that is about as fast as I want to go in this car, as any more then that and I think that any ability to rive it is gonna be gone. Car's always gonna be heavy, hell my 275 lb *** insures that, and teh iron block isn't gonna make it any easier. I just want to be able to take my car, with the a/c stereo and bumpers and leather seats to the track, run 10's and go home. Sure, a TH400 isn't what most consider streetable, but I look at it like this.. ton's of muscle cars came with them in the 60's, and they drove all over in them, so why can't I?

That beign said, maybe these heads are total overkill for what I want to do,maybe they aren't... the original point was to see if they are flowing teh advertised #'s, which apparently they are, which is good to know. Might still do them, might not. I wonder how the 225 ET's woudl be compared to teh 225 AFR's? I knwo plenty of people have had good luck with box stock AFR's on 402/208 motors, I wonder how the ET 225's would be in comparison?