I have a 1967 buick 430,360 horsepower,stock,complete carb to pan,it has the big port heads,it has the good flowing 67 exhaust manifolds,had 65,000 miles on it when taken out,stored inside,you can pick it up from stevens point,wisconsin $650 OBO
I put a 67 430 with low miles in my 67 gs conv. and UNBELIEVABLE performance with the 400 and posiou: good luck with sale
the motor spins freely,I just checked it,both hands on lower pulley,has normal resistance,did not need to break it loose with a tool,been stored inside for about 25 years