Trick flow 240s on milder builds versus Edelbrock RPMs

DC Dart said
So the trick flows perform the best even at the lower power levels. What are the thoughts on compression? The Edelbrocks would be around 10to1 and the trick flows would be around 10.5. 440 source list my pistons at -.025 in the hole being 10.4comp and 9.9 with 84cc. with .039 head gasket. I am down .008. Premium is 92 octane around here.
And I apologize for being one of the guys that asks questions with limited info. Cam is undecided but going roller. planning on sniper fuel injection with their distributer and TTI headers 1 3\4. Performer rpm intake. Have the heavy main 230 block with main studs yeah( typical core shift waah). Can get the Eddys for about $660. cheaper than trick flows. But if the compression is not to high would go trick flow.

Sounds like a bit of a pickle. Do you have a good engine shop in the local area who you can work with? If it was me I'd want to nail down the facts before I made another decision. You said pistons are down 0.025 but then you also said 0.008 so not sure which one you really have. On an engine like this you should pay attention to the quench distance which means you aren't going to be able to use a thick head gasket to lower the compression. Take some measurements, figure out what you have, calculate the compression ratio with the TF heads and then go from there. If the compression ratio is too high for pump gas then you'll either need to use the Edelbrock heads or you'll have to make some changes. You really don't want to put an engine together that you aren't going to enjoy using.
You don't need a lot of compression, or a big cam, to make 600 hp with the TF heads. The engines I've been working with lately are around 9.8 compression with hyd rollers in the high 230s or low 240 range and they make 600/600 with out of the box 240 heads. You don't want to use too big of a cam with the 240 heads on a street car since the high flow at low lift will blow the charge out the exhaust. Big cams are okay for race cars but not for street cars that have to cruise at 1800 rpm down the freeway.
I think in your first post you said you had an OD transmission with 3.55 gears? If so you'll want to go smaller on the cam. Otherwise you'll have a real problem ever using that OD.
I'm thinking that if you don't want to change pistons you should probably go with Edelbrock heads. If you want more power than cast heads then talk to Dwayne at Porter Racing Heads. Tell him what you're trying to do and he'll provide some cost effective port work, set up the heads and provide you with a custom cam profile that will fit your real needs. Be sure to tell him what you're really trying to accomplish. Saying you want 500 hp is meaningless. What you really want is a big round torque curve so you can cruise down the freeway in OD.