opps :shock:
4 inch bore on tall deck block slightly more cubic inches
motor is my brothers he told me 7:1 but looking at the pistons (flattops) and the build sheet machinist figure say 9:1
btw the primary headers are 2" so it got enough for breathing room.
he will be mostly using it on the street but tends to drive em hard.
he will be running off Sunoco Supreme NOS 117 but im sure the ocasional 93 octane aswell.
im thinking 5 pounds max for that motor
sorry for the confusion