Kb356 pistons

Adam, Those are step/dish pistons for 4" stroker motors (408 cid). With the step at zero deck you will be less than 10:1 assuming 64cc for a magnum had.

Also, If you are using LA rods you will have to have the small end narrowed to 1" to fit the piston. It was for this reason I stayed away from the step/dish pistons that KB has for magnum heads, I didn't want to add cost to reworking stock rods or have to machine the brand new Eagle rods that I wound up purchasing.

If you are thinking of going this way I recently picked up a complete magnum engine that I will sell you the rods for $50 for the set if you are considering going that way.