Olds 403 code
 

I bought an Olds engine to rebuild, and I am trying to decode it. The pad under the big 4A on the drivers side is 29L157179. I know the 2 means it was put in a Pontiac, and the 9 is the year 1979, and the 157179 is vin # of car it came from, but what I don't know is what the L means. It is supposed to be where manufactured, but the choices I was able to find online were, M for Lansing, B for Baltimore, X for Kansas City, and Z for Freemont. What would L mean? Could it also mean Lansing? Would make more sense than using a M.
Thanks

L is Van Nuys Ca, likely a Firebird line

Thank you Aus78 Formula

The guy I bought this engine from said it was a virgin block with only 42,000 miles. If it is, then it must have still had the factory oil.

http://i675.photobucket.com/albums/v...psfue730mj.jpg

Haha yeah they tend to look like that without regular oil changes or maintenance, combined with exhaust crossover baking any oil residue near the intake into a crusty mess. That one looks extra dry and gunky though.