Would be going with a 4.900 bore space with 10.00 deck height,The 4032 alloy has less thermal expansion than the 7075
I assuming you would temper the 7075 to T6?
You mentioned 4.25" bore.
Will the bore spacing stay at 4.480"?
Will this be a cast iron block?
Will you improve cylinder head sealing by going to a six bolt pattern around the cylinders rather than the present four bolt?
Four bolt or Cross bolted main caps?
Aluminum
6 bolts for the head has been entertained as i did have an issue a years back
I entertained the idea of having standard caps with a 6 bolt cradle with windage cover
For oiling have the pump run off the crank rather than the cam
Tiple pattern flange on the rear to accept sbf, bbf, and diesel pattern transmissions
Maybe a slot for a high pressure fuel pump and low pressure carb pump
Leaning towards running a timing chain that is thick or running gears all the way up like the cosworth DFV to drive the cam
Cam drive at the front like the smaller 6s so you have the choice to run a distributor
Dedicated oil cooler lines that exit the motor and could be used in a turbo application
Oil squirters that mount from the block rather than run through the rods
Dont really have anything else that i could think of needing to change but if it comes up will be worked on