Decoding general motors vin, trim tags, engine, transmission and drivetrain codes & paint codes Just bougt a fixed up 350 with casting nr 3970010 with 4 bolt mains, is this a lm1 or something else, mikes page says a lm1 with casting number 3970010 os only a 2 bolt main This page has basic information on it, but it's a portion of the small block chevy numbers information
The Nasty Girl (1990)
The engine code page is where this topic is further detailed
Numbers matching this is my opinion, and the generally accepted norm:
Learn to decode small block chevy engine suffix codes, stamped numbers, and their applications with detailed information from dtr to hq. Decoding small block chevy engine suffix codes and stamped numbers, covering tbt to tjs for enthusiasts and restorers. This page itemizes and elaborates on the specific contents of the various rpo (regular production option) codes that were used over the years It shows evolution of options or will link to the specific details for that option
In addition, it will also elaborate on the camaro models Many options were packaged together and offered as standard equipment on various upgraded camaro models. Tips 'n' tricks topic useful tips & tricks to make working on your camaro easier.
