223 with a 450 economaster spreadbore 4bbl

[Anonymous]

does this sound like a good idea. i would be using an offy 4bbl intake (with spread bore adapter). since its vacuum regulated, i dont see why it wouldnt work.

 

[Colonel Flashman]

You'd probably be better off going w/ the 390cfm as oppossed to the 450cfm.
The 450cfm is rated @ 95% engine efficientcy to run best w/ a 309c.i.er to a 312 c.i.er engine.
Other wise you are just pouring fuel out the tailpipe.