351W police or HO block casting #\'s
As far as "factory" 351 windsor blocks go, I've never seen a bad one or a special one? They are all good, they are much stronger than the 289 - 302. The only differences that I know about are the standard block, the late model roller lifter block and the after market block (SVO, Dart/World Products).
SVO has several blocks, the one you may be looking at is a two bolt main, high nickle block supposedly meant for "claim racers" in oval tracks. It was not a factory piece, it was from FMS/SVO. Others had raised decks, siamiesed cylinders, etc. If you look in any recent Ford motorsprot catalog you will find methods to identify the blocks as well as part numbers.
That is assuming it is a motorsport block, if its Dart/World Products...then I have no idea of how to I.D. it. Maybe some of the stroker guys have better info?
The part number you offered is a factory part number, probably 1987? Other than that, I can't see how it would be "special". I'd like to know more about any factory special 351 blocks if anyone has additional info.
[ This Message was edited by: beoweolf on 12/5/03 8:30am ]