just got my new block from the machinist today. i cant seem to decode my block #'s using nay resource. some one help please. the 3's on the head pad are 16B420175 K09 08 CMJ

and the trans flage #'s are GM 3970010



can some one decode this for me please ?:bowtie:

K09 08 CMJ

K = St. Catherines, Ontario
09 = Sept.
08 = 8th day
CMJ = 1974 350 t4OO police - 4 full size
CMJ = 1980 305 automatic trans. H - - full size/Camaro

http://www.nastyz28.com/chevy-engine-code-stampings.php

3970010=
1968 327 - - 2 A
1969-79 350 185 370 2 or 4 car, truck, Vette

http://www.nastyz28.com/sbchevy/sblock.php

thanks for the help. dunno why i couldnt find it earlier..

16B420175 VIN derivative from the original car this engine was in. Federally mandated to be stamped at final assembly plant to be able to track the motor back to original car. (theft etc).

1 - Chevrolet
6 - 1976 Model Year
B - Car built at Baltimore Assembly (No Camaro's built there)
420175 - Last 6 from the cars VIN


CMJ - L65 350-145 hp with TH350 trans and 2-bbl carb, its a 1976 Chevelle engine as that was the only Chevy in production at Baltimore GMAD plant in 1976.


3970010 is a common engine casting in use for over 10 yrs. Millions used in all Chevy cars and trucks.