Quote:
Originally Posted by James L Miller
I'm looking at building a "killer?" 318 2bbl combo with the 302 swirl port heads. It sounds like I can use a bowl hog and go all the way down to the valve guides as part of the valve job? Or maybe use a Serdi type cutter with a radius at the bottom of the cutter to open up the bowl as long as it's done all the way around?
When did they get rid of the .250" depth cut limitations? I guess I haven't been paying attention to the rules.
I also saw the 308 360 head was legal but needs to have the smaller 318 valves put into it. I guess with the VJ changes that opens up another possibility with new seats and whatever VJ works. It may not make much difference with the tiny BBD 2bbl carb?
|
You just may find that when dealing with seriously restricted combos(I think that a 2V 318 qualifies even though that carb flows more than what I'm used to) you might want to be looking for the smallest runners. Velocity is your friend not necessarily volume. The manufacturers didn't spend lots of time and money coming up with those swirl port heads just as an engineering exercise.