The flow bench testing I did showed that the Rochester carbs are the cork in the system. A
slightly reworked 1966 manifold with 3 holleys
allowed a basic 455 station wagon (weighing 4400 lbs) to run 12.06 at 112 mph.
If we could get the manifold to flow around 280
at 28" that would be over 550 hp on a street type
manifold. Tom V.
