deadkelly

if you have ported 360 heads ? i would go to a edelbrock rpm or a mopar single plane manifold . 6oo carb will work fine . the thing you must under stand is when you go bigger in the heads you loose bottom end . but a 318 makes its power higher in the rpms anyway . i recommend using a bigger cam then the one you listed , because it costs the same or not much more but it will be a big difference in the end.the name of the game is matching all the parts so they all work together. if you are not using arp rod bolts plan every thing for 6000 rpms max , remember you only ever rev that hard when racing or doing burn outs and only for a couple of seconds . ok i would use a cam around 468-478'' lift & 235 - 245* duration/@ .050 ( hyd) shop around call up some engine builders tell them what you want they will help you . use a 3000 rpm stall it sounds big but it will still drive under that rpm its just using those heads cam and carb & extractors & manifold it will be the icing on the cake . you may also want to use electronic ignition & have about 9.0 to 1 compression ratio . with 3.23 - 3.5 diff gears you should run around or under 14 sec - 13.7 sec 1/4 mile & be in the ball park of 300 hp + . i was going to build a engine the same as this for my Australian 1969 dart utility , i priced it at around $4500 -$ 5000 aus ( $4200 us$ ish ) but i found a reco mild 383 b motor on ebay for $3500 au with 727 auto now thats what i have in there. still need a tail shaft i will have that in 2 weeks ok mate good luck .

deadkelly

i believe 68 318 2 bbl cam specs are .373 in/400 ex lift 240in/248ex duration part number 2899144 hope that's some help