The only reason to consider this is to use some valuable parts in a new application.
I am going to use the crank and intake from the 550 megablock motor in a new BMP Aluminum block.
So what I want to do with the heads, valvetrain , pistons, rings and block left over from previous build is to put a stroker crank in it and lower the compression to a liveable level for the 440-1 heads. My Cp pistons have a pin height of 1.662.
To get compression down to 11/1 with all this I would need to run a 6.700 rod on a 4.5 crank a friend has for sale. That ends up at 1.4888 rod ratio. Not too terrible, but there is also a 4.75 crank available which would need a 6.535 rod, which is 1.37. since this motor will be aimed at a power band of under 6500 rpm, maybe even below 6,000 rpm side loading will be somewhat less than a 7500 rpm race motor.
So let's hear what you think. By being able to reuse the original heads, pistons, rings, and block the cost of this build would be pretty low. And the 4.75" crank would make good use of the fully ported -1 heads I have also, and at low rpm