Looking at ordering a cam, springs etc; What would make the most power out of these...I have the L92 heads with 9.67 to 1 compression stock LY6 and I do not want to fly cut the pistons.

.610/.615
223/238
108+4
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.598/.610
231/239
110 LSA (109 CL)
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.639/.623
235-239
111 LSA (110 CL)
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.583 .600
227 238
108 116
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Don't think about it call a Cam person and worry out bumping up Compression or something else.
Look up Pat.G or Martin @ Tick there many others
The cam your looking @ will more than likely be the same $ as a custom 399 or better yet 450 fully customized to your engine

 

I pretty much have same set up as you an ill be running a 22×/23× .61×/.60× 113+4 cam. Might work for you too

 

Forgot to mention I am running a Th400 with a 4500 stall, 4.10 gears and I am going to run a Victor Jr. with a Pro-Systems Carb with the MSD 6LS2 6012 box.

 

The 223/238 108+4 cam will make the most power IMO.