6 pack, or 4bbl?
The port cross sectional area on as-cast small block six pack manifolds are pretty small, I've got one here that I'm thinking about porting heavily and also modifying to increase the radius and raise the runner height where the runner meets the plenum on the low plane.
here's a picture that might help get the idea across. I have no idea how well it will work, but I can't imagine it could do any harm.
The horizontal lines represent approximately the height at which I want to raise the runner.
Hopefully this plus porting would bring it to be on par with other modern dual plane manifolds.
The port cross sectional area on as-cast small block six pack manifolds are pretty small, I've got one here that I'm thinking about porting heavily and also modifying to increase the radius and raise the runner height where the runner meets the plenum on the low plane.
here's a picture that might help get the idea across. I have no idea how well it will work, but I can't imagine it could do any harm.
The horizontal lines represent approximately the height at which I want to raise the runner.
Hopefully this plus porting would bring it to be on par with other modern dual plane manifolds.
