fastmark
Well-Known Member
Looks like you have some good parts anyway. Finding a 70 hp block that will run at std is rare. That means it did not have many miles on it when retired. But you have an excellent starting point. Those 2266 pistons are for a 69 compression height. That’s why they have those closed chamber heads installed. You put the 2355 pistons in and you better check the head to piston clearance. Chances are it won’t work even with that thick head gasket. With todays gas and iron heads, over 10.0 compression can cause detonation. It still looks like it has non hp rods and a 70 hp balancer. It will vibrate. Is the flywheel neutral balance. Did it come with the motor?