NO the 396to454and 502 are all 9.800 the tall deck is the big truck block and only came as 366and 427 the tall deck blocks 10.200 deck all have four bolt mains mark 4 blocks have a 1/8 pipe plug up top of timing cover the deck is taller then the top water pump bolt by 5/16 or so and the 9.800 deck is 1/8