Quote:
Originally posted by glxstang
I just pulled my intake manifold to see what numbers were cast in the lifter valley. I thought all 302's had just that casted in the valley. Mine actually has three XXX's on either side and the ford emblem with a "SB".
Anyone have any clues to what the three XXX's are? Is it not a 302 block?
Thanks again....
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The SB most likely stands for 'special block'. The X's are stamped in for quick and easy identification that these are special blocks. Most often a special block is marked when different casting procedures are tried, or different metal compositions.