Yes the exhaust numbers blow everyone else's out of the water, I looked at many heads and found these with the best flow numbers

 

I'm guessing it was either flowed with a pipe or wasnt on a standard Superflow bench.

FWIW my ported AFR 220s @ 227(which were not really ported with mid lift flow in mind) flowed 282/207 @ .500 without a pipe, on a 4.060 bore. Even with a pipe that would be, what, 230cfm? 243 is nuts!

 

Im not sure how they flowed them, but I agree 243 is nuts for a lt1 exhaust flow, I even looked at ur afr 227 and these outflowed it so yea its pretty crazy

 

It says right on their website that they're flowed on a 4.125" bore with a pipe on the exhaust. Still good exhaust numbers regardless.

 

guess i overlooked that part I was too excited on the specs haha

 

exactly mine flowed right around the same on a 4.030 bore with no plate and no pipe.....243 seems really inflated.....small ports like the exhuast side ~75-80cc's seem to increase alot when tested on a large bore......regardless they are a great head ive heard alot about TEA.....be curious to see how it runs!!

 

What are you doing with the old heads? have any flow numbers on them?

 

yea ill let ya know how it dyno's hopefully within a week...

already sold the lt1's that just came off it

 

Seems like a smoking deal for only $2k. Do you have the link handy?

 

sure do , here ya go
http://www.totalengineairflow.com/cn...eads/gm/lt1lt4

 

Figured I would give yall a update... Heads are on the car, gotta do some port work to the lt4 intake so everything lines up, header gasket and new injectors should be in tomorrow as well, so hopefully it should be ready to roll by the end of the week. Depending on the tuners schedule

 

Unfortunately, all of that is meaningless since the #'s aren't comparable.

For instance, IIRC the head the OP has was 2Xcfm down on the intake & 4Xcfm down on the exhaust when tested on my SBC LT test setup & flow bench. My bench isn't "low" or "stingy," it is just that flow #'s are for marketing. Buy useless marketing info at your own peril.

 

I posted those numbers to show what the popular head porters are getting on their own benches... which shows are far "superior" the TEA heads are on the exhaust side [/sarcasm]. My point was I don't think TEA has some secret porting knowledge that allows them to get numbers like that on the exhaust side if all benches were equal.

 

In hindsight wouldn't you question the integrity of a company who will go to such lengths to inflate marketing numbers as to "test" on a bore size not even available? I am aware of the GMPP prototypes and Jeff Green's self made Donovan LT1 conversions, but from a realistic standpoint there are no 4.125 bore LT1 blocks to be had.

Besides the already discussed tactics they used to inflate numbers how about the clay radius? Isn't it appropriate to post what the radius was? Otherwise hell it could be a velocity stack.

All that "trickery" sure does pay off though when people send them money because they have inflated numbers rather than honest ones.

 

You'd think an industry standard would be used, I realize that most people use a 28" bench, but even still you see some on different depressions.

 

IMO that is a matter of integrity. At least they admitted clearly it was a 4.125 bore I will give them credit for that.

 

Just for ***** and giggles lol, here are the SAME heads, but flowed by Tick Performance on a 4.030 bore and a 28" Bench with a 2.00"x4" stack on the exhaust side. Just to bring them down to another perspective...

http://www.tickperformance.com/produ...4-engines.html

 

this is where I first seen the heads at lol

 

Added a few pics for yall
everything off


Heads on the car

LT4 Intake ported

 

I hope you didn't pay for that intake "porting".