[Chuck78]

Another thread diversion - if swapping the Magnum top end onto a 305 block, are the larger Magnum head and manifold intake ports going to cause less desirable low end throttle response?
Generally speaking, in the hot rod community, larger intake runners will give you the bonus of better high rpm operation in conjunction with a bigger cam and carb, but for a street engine, the larger ports will cause a bit of loss in the crispness of throttle response down low, as it takes a moment more to fill a larger port with air/fuel charge.
The larger displacement of the 351M would very likely offset this effect, but I was curious about the 305's reaction to a magnum top end, especially since we will not be revving these engines any higher than stock ever.

Can anyone confirm the success and behavior of a Magnum top end added to a 305????