Good to hear, but what the problem was, if it's happened on other heads, and the steps to solve the issue would be things I'd want to know.
Hopefully it's just a freak deal and other customers don't have to anticipate teardowns & repairs.

I received a call from Trick Flow and the final inspection of my cylinder heads showed valve float as the cause of my sealing issue. He told me the seats, keepers and locks were beat up, BUT, not on all the cylinders only a few. The remedy is installing titanium retainers and adding some shim to increase the spring pressure to help the spring control the valve. They replaced all the valves, resurfaced the heads, touched up the seats and are installing the titanium retainers. He is thinking the cam may have aggressive opening and or closing ramps that the spring was not able to control.

So, the obvious question at this point is……what’s the cam?
And what rocker ratio are you running?

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It's a .030 over , stock stroke 440. 11.7 to 1 cr. 260/264 Hughes engine cam. 1.6 rockers. 2" hooker headers .

This is from the Huges site.

Thanks Doug.

Fast rate .904 cam with 1.6 rockers.
Not a match made in heaven for high rpm stability.

The cam I have has a different part #
What would you do to improve the stability? I really would like to not have to deal with this again anytime soon!

Flat tappet valve float didn't knock your seats out of whack. They probably weren't installed just right and moved.

That picture above has a spring error on it DVW's looks right.

1128 has a 146lb seat pressure. at 1.87 (supposedly pac)

and closest pac is a 1924 which is spec'd by them at 144 at 1.900

Yes, I'm inclined to agree with you. There were signs of valve float like an X wear pattern on the valve tips and the retainer and keepers were super difficult to remove. But was it enough float to create seat damage? I don't know. I can only go by what I was told. If float is the cause it happened very quickly, as there is only 45 passes on the heads. On the bright side Trick flow repaired them at their expense and I'm very pleased with that.

The card that came with the cam has different spring specs than the cards for the same cam on the Hughes website, I'm going to call Dave and get his take on what to use with his cam and Trick flow's evaluation. Which should prove to be an interesting conversation.
Even the trick flow spring specs are different from what is listed on the cylinder head instruction sheet and what the spring part # list in their catalog. The numbers are all over the place. What do you trust???
To know what you are getting you have to check everything yourself, which mean buying spring checking tools, fun stuff !!

The TFS-16094 spring that comes on those heads is a PAC-1294.
In the paperwork that comes with the heads, the specs for that spring are incorrect.
However, they are correct in the TFS spring chart(specs the same as the PAC catalog).

If the lobe profile isn’t stable enough to allow the springs to maintain control without excessive force, that’s when the tough decisions get made.
Don’t rev it as high, add spring force and hope for the best, change the cam, etc.

The spring has a rate of 427lbs/in, so with .650 net lift, you’re going to have 277lbs on top of the seated force.(such as 155+277= 432).
It’s a lot of force for a cast cam and lifters.

Thanks for your input it is helpful and appreciated.

The comp 928 spring with installed height 1.87 to 1.900 is my choice