(Quote} When i rock the pistons like that they all seem to be the same but they do possibly stick up above the deck surface a hair. They are basically all at o when they are flat. They dont rock much in the hole. [/quote]
Your thinking is normal before you measure them, .003 to even as much as .010 is hard to see and feel. To get actual results between them you need to measure them with depth mike, maybe even a set of dial calipers if your real careful using them or a dial indicator on the edges.
I've learn to many stupid lessons on Hi Po motors by NOT making sure on measurements like these
Be safe and make sure your good before taking any chances

Your thinking is normal before you measure them, .003 to even as much as .010 is hard to see and feel. To get actual results between them you need to measure them with depth mike, maybe even a set of dial calipers if your real careful using them or a dial indicator on the edges.
I've learn to many stupid lessons on Hi Po motors by NOT making sure on measurements like these
Be safe and make sure your good before taking any chances [/quote]

If this was a issue wouldn't I have had a problem with my old closed chamber stage VI heads? They actually had a smaller combustion chamber then the Trick Flows.

So looking at the differences between heads could anyone tell me if it worth the extra money to go to the Titanium retainers? Also could anyone tell me if my cam says .660 lift with 1.5 rockers what it would be with 1.6 or 1.7? Also the differences in the springs go from 1.55 Dia. and say good for .680 lift and the 1.56 dia springs say good for .700 lift. and the tech said that was for solid roller cams.

Only buy the more expensive TrickFlow head option if the valve springs that come with that option are right for your cam.
The cost is the springs & retainers they are providing.
This is not a 5 minute exercise, your exact cam grind and spring requirements need to be used. Spring installed height, etc.
You can find the PAC for Trickflow valve spring chart and the springs that come with each option to make a determination.
Attached is a screen shot of the spring chart (PDF).

Link to Trick Flow web site for valve springs.
Trick Flow valve springs by PAC

0.660 lift with 1.50 is 0.704 with 1.60 and 0.748 with 1.70. Should've paid attention on math class the day when they did ratios and proportions!

Im not going to lie I am no math wiz! I do really appreciate the help. Thank you
I wonder if I could put these heads on right otb if they would work with my cam and 1.6 rockers.

https://www.summitracing.com/parts/tfs-6161t784-c01

I know there is better ways to do it but im not that smart.

If you are not sure of what you are doing then you should get an engine builder to help with the project. Race engines are touchy. Miss one critical item like valve to piston clearance and whole thing goes boom.

I have built a few, I always check the valve to piston clearance. One of the main problems is I have no cam card and don't know exactly what the cam is for sure. The info listed was the info I got when I bought the cam. I built this 500 and been running it for 9 years with one refresh a year ago. I wouldn't say i'm clueless but I am missing some info and some money so I don't have a lot to spend. I am very great full for all the great information. I guess I have been very lucky on the last few engines that they even ran!

Maybe i need to start with a new cam and bring the heads in and have them setup for the cam. Possibly mill them down to get a little more compression.

If you have a degree wheel and a mag based dial indicator you can figure out what the cam has at the lifters at .020 lifter rise and .050 as well as the lobe separation angles with a little work
PM me on here if you want some pointers on how to do this