gomer

iTrader: (13)

I don't get on here alot anymore, but I just had to let you guys know how my brothers LE Trick Flow heads turned out. I took the LE Trick Flow heads I just got back from LE down to Patriot Performance and had them flowed. Superflow bench, 4.030 bore, and exhaust was without a pipe. The before numbers were 249 intake, needless to say, I'm HIGHLY impressed. I'll post up all the before numbers tomorrow when I get into work. I want to give a BIG thanks to Gunnar at Patriot for doing the before and after flowing for me

lift____int____exh
100___72.4___63.6
200__135.2__113.5
300__190.1__150.1
400__239.3__183.1
500__275.3__204.2
550__288.2__213.0
600__296.0__220.4
650__300.3__226.3
700__303.5__226.8

Gunnar@Patriot

iTrader: (20)

Not a problem Scott. These heads look great and flow even better.

MrBill97396

iTrader: (10)

What size valve is that on ?

T/A KID

iTrader: (12)

2.08 and 1.625

Old SStroker

Here's a link to Lloyd Elliott's comments on these:

http://web.camaross.com/forums/showp...42&postcount=6

MrBill97396

iTrader: (10)

So let me ask aren't you ahead of the game if you get the same numbers with like say a 2.02 valve ? And you have a good port design. Also the indusrty standard is 28" of water correct? So why are you going to flow them at a higher number ? Just to get better numbers? I have seen people advertise at 40" and throw out great numbers but the head is junk. Like a wise man told me before " you want to make a bad head look good, put it on a big motor". I don't think I can put more questions into one reply HAHA

SStrokerAce

iTrader: (2)

Well consider the motor can see over 100" at max lift and maybe 200+" at low lift, maybe flowing them to see what they do in real life and how they act is important? You don't quote these numbers to customer but you should test the heads there.

With a smaller valve you might have a higher velocity thru the venturi and a higher discharge coef (more flow thru a smaller hole) but can have worse perfromance since you don't have enough curtain area.

That line in my sig is there for a reason.

BTW

"Like a wise man told me before " you want to make a bad head look good, put it on a big motor".

To me that's a fast way to make a bad head look even worse.

Bret

RealQuick

iTrader: (14)

There is always controversy over flow numbers. Just remember guys/gals...with trickflow or AFR stuff from LE, you should expect a 30cfm gain over his LT1 stock casting heads he ports . Doesnt matter what some people think are true flow numbers or not. Lloyd's stuff is making great power (400+rwhp with LT1 heads/cam) so you can imagine how good the AFR and TFS stuff from him is.

Good work Lloyd.

Jonathan Bellas (3 sets of heads sent thru LE)...

Old SStroker

Eliott's numbers are @ 28 in. on his bench.

Flowing at higher depressions may tell you more of what happens in the engine. If the port gets "noisy" at higher depressions, it probably indicates that the quality of the flow may not be good. Ports that stay quiet at high flowbench depressions seem to make more power.

Here's another link. Larry Meaux (maxracesoftware) has some interesting input on this topic.

http://speedtalk.com/forum/viewtopic.php?t=2161

MrBill97396

iTrader: (10)

Not contreversy, I was just curious. I know LE is badass

Steve40th

Well, the only way to really test heads is on a engine only dyno. Tell the head porting guy the cam and the rest of the data of the engine, then have him port the heads accordingly, then dyno all the different heads sent on the same short block/induction exhaust etc. Flow numbers dont mean anything. The entire package with experience counts.
This will tell you the potential of these heads.
A drag strip has to many variables, and flow benches and operators of these flow benches have too many variables.
Just my opinion.

Old SStroker

Another option might be to match a cam to the ported heads as well as to the rest of the engine, vehicle weight, driveline, traction and the vehicle owner's desires, build them, engine and chassis dyno them, then tweak the porting and cams in a continuous improvement program. You might drag race some of them to add another metric to the system.

As you said, the package counts, so just changing the head flow without complimenting it with intake, exhaust and valve timing might not give you the true potential of a set of heads.

If the cars get quicker and faster and the area under the dyno torque and hp curves keeps increasing incrementally, you are probably on the right track.

My $.02