[SOCKS]

Can Someone Tell The Numbers On Back Of Engine By The Flywheel Is What Year Motor? Thanks Any Help I Would Be Glad-3999289gm T 14

 

[aukai]

mortec.com has all of the block#s listed

 

[Jim Mac]

you need the date code off the other side of the bell housing mount. it should be something like A 14 4. Jim

 

['69Brian]

3999289....454.......71-79...2 or 4 bolt, some "CE" replacement blocks had four bolt main caps