New Motor for RF GT40

[Jac Mac]

Hi Ron. Ford had a manifold similar to a tunnel ram back in the 302 boss era which used two 4500 holleys in I/R configuration.Initially they had no shared plenum,but later production models had a passage approx .75"dia between each pair of runners[1/6,2/5,3/8,4/7]. At 1050cfm{assuming checked @ same pressure drop } that would rate each barrel at 262cfm. Regards Jac Mac