4 cyl to 418 stroker needs help

[420nitro]

Price is good!
Mine is close to that combo. Sounds like you are going to run a solid roller...Duration at .050 is going to be at least 250+ so that means the speed demon is out of the question. Mighty Demon is what I have and sounds like that is what you will most likey need or a Race Demon. 850 cfm is about what I would say to run too. Not any bigger. If Holley carb... a 950hp or 1050hp would be in order.
As goes for traction....how much of a power adder are you thinking about,... if any?
Anything more then a 275 shot?
If so you might want to consider a glide due to traction issues! If you do hook (very possiable) with a C-4...you will be fighting to keep the front tires as close to the ground as possiable! Other wise the back bumper might get some scratches.