[Aerocoupe]

greenhornet347,

What 351W block are you intending to you use? This will play a major role in giving you a ball park idea as to what the limitations of the block will be. As BHAM stated the whole combo will play into the horsepower limitation. You could just say for arguments sake that the internals will survive well past the block's limitations. With that you could also ask what a non-roller block (list specific years as we all know the casting technology and metallurgy all play a roll in this through the years), a stock roller block, and for shits and grins you could also ask what the man-o-war blocks and Dart blocks' limitations are as well. Searching the net will provide most of these answers though. Another thing you need to think about is RPM, this is also a limitation of certain blocks. You also need to zero balance the rotating assembly with the larger cubic inch motors as a rule of thumb. Not 100% necessary but it will definitely help.

Darren