Quote:
Originally Posted by hardtimes
Hm, regarding running B zeniths or most single throat down draft carbs....guys mill out runners to size on both carbs and blocks..no  |
It may not be as small as it looks in the pictures.. Yes manifolds and blocks can be milled. Measurments would tell the story of how far it could be enlarged . Cast iron is a real plus. Aluminum manifolds are weaker and can't be milled much and still support cast iron carbs. The Vortex was suppose to have B size runners but ended up model A size, I think that is the reason that it showed no difference in the dyno tests whether A or B carbs werre used. I've got a vortex manifold in my collection but hesitate to ream the aluminum runners. If I ever use it I will likely run the lighter Marvel carbs. If I saw your manifold at a swap meet I would try to latch on to it if I could . I'm into dual updrafts .