I have an -69 Z-11 Camaro with an L-48 engine. The cast # on the block is 3970014 (4-bolt) and the datecode is 0707CRE is there, but there is no VIN # on the block. The intake (and carb.) is right 3927184, and the heads says 3947041 dated 1970. I have litle info. on the car, but could this be a replasement engine ? (longblock ). I bought the car on internet from a women in Bakerfield CA. Anyway what is the right cast # for a -69 L-48 block ? My car is produced in Mars week 2(03B) (Sorry for my bad english I live in Norway, EU)