Anyone flowbench the trickflow 190 heads yet???

ou812 said

I only posted because I thought Kim's post was a bit misleading. I did post flow #'s on our facebook page, and they are very good, but what I see more and more is guys talking about flow #'s this and flow #'s that. What about POWER? To some extent, I don't care what a head flows, but it needs to make power. It needs to fill the cylinder as much as possible given the application.
The question you guys should be asking the people you plan to buy from is: does it make power????
So far the TrickFlow heads are proving to be a very well priced head that will make good power. It is what it is...

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I agree 100%. The flow bench is a wonderful tool, but just looking at flow numbers is a piss poor way to judge a cylinder head.

Many others have posted this same thing, but so few really even have a rudimentary grasp of cylinder head dynamics that all they can get is flow numbers.

I've had some pretty big name stuff go across my bench and the flow numbers were impressive. But power production was crapola. There are several reasons why a cylinder head may only make 1.4 HP/CFM and the same head may make 2.0 HP/CFM if ported correctly at the exact same CFM.

The ultimate indicator is a mechanical Trinity. The flow bench, the dyno and the time slip. All equally important. If one is reasonable with the data of all three, you can make great power where others fail.

Again, why did TF decide on a 2.02 intake and not bigger? And IIRC, they used a 1.58 exhaust valve.

HMmmmmmmmmmmm.


Edit: the exhaust valve is 1.570. My W2 engine will use a 1.550 exhaust and if I have any kind of luck, I may be able to get by with a 1.500 and that will make me giggle.