340 cam in a 318

Dan the man said

I have a question about putting a 340 cam in a 318. From what I've found out, the 340 cam has a ivc point of 69* and this brings down the dcr to like 6.63:1 ( 18 psi lower cylinder pressure than a stock 318 cam ). Wouldn't this hurt performance rather than help? I based this on a 1973 318 with a 8.6:1 cr. Did I figure something wrong or have the wrong information?

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I used to do it all the time. But, I also added milled 360 heads, TQ, intake, dual exhaust, changed the curve in the distributor, added a windage tray, high pressure oil pump spring, and upped the pressure in the trans. For some reason they'd run like a 72-73 340... There are better cams today, I usually run a custom Racer Brown solid cam. Nothing wrong with Isky cams. Never had a problem with one. Call a cam company, be honest with yourself, and give them "all" the info on your car and engine. It is what they do. We didn't play with programs, we just put different combinations together and ran them. Building a 318 using all the good 340 stuff was a no brainer, the outcome was known.