engine stamp # CH41K9C152409 is the VIN # of the car the engine was originally out of, Cast # 2536430-6 is just the casting # that all 440's have. Neither of these numbers will tell you anything. The numbers you need are on a pad just in front of the intake manifold. Follow this link, I have posted a picture of one of my 440's with an arrow pointing to the pad that you need the numbers from. You will most likely have to scrape the grease off it to find the numbers. The number will include 440 in the number if it truly is a 440. http://www.users.qwest.net/~tapril1/68440.jpg ----- Original Message ----- From: "dave sankey" <wedgehead413@xxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Monday, June 24, 2002 6:18 AM Subject: IML: Deciphering Engine Tranny Casting Numbers > Greetings list, > > I am considering purchasing a used 440/tranny combo to > rebuild and recieved the following numbers from the > current owner. I was hoping one of you list members > with the engine code cracking books could decipher > them for me. > > engine stamp # CH41K9C152409 Cast # 2536430-6 > > Head # ' s are 3769975 400645 2 > 30 F 6 > > > Private e-mail off the list is okay, if this isn't > Imperial related enough to be of interest to the whole > list. wedgehead413@xxxxxxxxx