Leslie, Since no one answered, I thought I would give you what I know. 4006630 Is a 440 slated for 1978 production. I am not sure how long they put 440's in motor homes, but the letters do match up with your guess. Earl I have a 4006630-440-4, 10-7-76 cast on block and 7T440 11 302 stamped on boss behind water pump. I understand the block casting number but the stamping has me puzzled. Could it be an 82 model motor home? Anybody want to comment? Thanks [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.