340 Cam Comparison

In response to me being a 318 hater;
The biggest reason to start with a 360
is because it falls together at 10.7Scr with no machining; read cheap. No decking costs. no head milling, no intake shaving. Just boring. The machining costs that can be saved, together with not having to do a valve job on 30year old heads, can be put towards OOTB 63cc closed-chamber alloy-heads; and with the alloys, can be run an easy 20 or 30 more psi.
For me it was a natural. What I wouldn't know in 1999 was how powerful 185plus psi would feel. The scuttlebutt at the time was 9.5Scr was all you could run, and nobody was talking Dcr or psi, and there were no Dcr calculators at the time. So I had to figure it all out long-hand with hi-school math. Little did I know that 185psi would run WOT on 87E10 with full-timing.

Do you know;
what you have to do, to a 318 with a performance cam, to get it up to 185psi? With a middle of the road Ica of 64* and at 930 ft elevation where I live, it will take a Dcr of 9.0, and an Scr of 11.3
The thing of it is, to make 11.3Scr, the Total chamber volume has to be, at 3.94 bore, 64.3c........... Good luck with that. To use the .039FelPros, Everything will have to be machined.
I don't hate 318s; I'm a realist.
Does a 318 need 185 psi?
Well, no......
But I can practically guarantee you that if you ever get a chance to drive one, you will never go back to 150 psi; which is what you would have to do, to run open-chamber iron heads on 87E10 with full Power-Timing.
To run 150 psi with a 64*Ica and iron heads, the Scr would need to be 9.7, and the Total chamber volume would need to be ~75cc. yeah, good luck with that. There are no cheap parts that I know of, that fall together anywhere near that, adequate for a cam that sports an Ica of 64*...
I don't hate 318s; I'm a realist.
Do you need to run an Ica of 64*?
Well no, but
that's about what's on the 340 cam that everybody brags on.............. which I won't ever again stick in a 318.
64* is middle of the road;
54* is smallish for modest power with fuel economy, and
74* is flippin' huge for a streeter.