[flatheadmurre]

Problem is if you alter the design nostalgic racing and the high buck motors are out of the equation.
Making an aluminum block sounds great to me...but how big is the market ?
Anyone involved in an adventure like this wants to at least break even in 3-5 years.
Get 100 paying customers to sign up for a block and then you can start thinking about it.
A prototype engine will not end up in the 20k range and for a small scale production to be within a reasonable cost you need templates and coreboxes to be made.
I have the furnace and will gladly poor your block if you fix the rest !!
But making the templates is not as easy as breaking a block apart and copying it.
You have to make compensation for shrinking.
Find out where to put the ingots and other things which will be different with aluminum.
You cant use coresupport rods the same way as in cast iron.
So will have to be some kind of wetsleeve engine.
Lots of small bits and pieces that ads up.
I said it before...i admire all the people doing stuff like this for the hobby...real labour of love!!!