Good cam size for stock 318 bottom on boost
What fuel? Intercooler? Meth injection?
I run it on LPG (Propane) blow through. Propane is quite popular in australia and its quite easy to setup and cheaper to setup compared to a Petrol (gas) setup.
I run an ebay 600x300x100mm intercooler, 3" in/out
I have also just fitted water injection not to cool down intake temp but to reduce cylinder chamber temp. LPG (propane) burns hotter in the chamber then Petrol as it has no cooling effect, so im going to use the water injection to cool down the chamber. Basically just to help the stock cast pistons survive.
It would run better with 3.25 or 3.0 gears in the rear for sure, its what was in there to start with and so far its going fine. The only issue i can see with running 3.0 gears is loading the engine up too much at low/er rpm which may cause stock parts to expire sooner.
BigTommy click the link i posted earlier, you're not going to find anything better for what you're after off the shelf. The only other cam i would consider off the shelf would be this.
http://www.summitracing.com/int/parts/sum-1798/overview/make/chrysler
Keep things simple dont over complicate it. Standard rocker arms are light and strong, so are stock pushrods. Run a good single spring with a damper and you'll be fine to 5500rpm, theres no need to turn it any higher with the amount of power you're chasing you'll just end up braking stuff. It is only standard stuff at the end of the day
