318 Build suggestions

Blah, Blah, Blah get a 360. Your 318 will be fine. Do you really think 22 cu in matter if the rest of the motor is the same as a 340? 300 hp is a nice street motor. How did those old stock class racers ever get into the 12s with a low compression 318 and open chambered heads? They knew what they were doing. You never need a 360, and you could not give me one. Truth is you need air flow. I used to put 360/340 heads on 318s and even a 273. They all ran great, and you don't need as big a cam with the better heads so everything is more streetable. If you are worried about compression, have any 360 1.88 intake valve heads milled .040 and .038 on the intake side to get your chambers to 64ccs, get a great valve job, call some cam companies and get their recommendations, and go for one. I personally use a 340 cam or an updated grind on a MOPAR lobe in the same range, 268 duration and .450 lift, for a 318. Get the right springs to go with the cam and don't forget to use a good double roller timing chain setup. You already have a large port dual plane intake, maybe try a 625 Street Demon carb. Talk to Justin, Moparofficial, about heads and recommendations. Talk to Hallifaxhops and get a good distributor with a quick advance curve. Use what you have, with a few parts you can have a great running car. No math needed.