he said it was out of a very hopped up 428 he bought years ago and when he sold it he took the performance parts off and sold it stock and kept the performance parts and this is the only thing left from it other than that he has no idea but when i was looking in my big block ford engines book it said side oiler 427's were the only engines to have the grooves in the #2 and 4 cam journals so i dont know anymore info on it, should i junk it or what should i do i dont know if its worth anything to sell but i know it has alot more lift then the stock 390 cam i have.