Motor Casting "Family Code"

[Mopar4Play]

When decoding the casting number on the block it say the Family code is LA can anyone tell me what that means?

 

[wish4hemi]

LA is a term used for these engines:
'64-'69 273
'67-later 318
'68-'73 340
'71-later 360
There is also the B series (350,361,'61-up 383,400) and the RB series ('59-'60 383,413,426,440).

 

[moper]

Its from California .
jk...
Like Wish noted...LA means it is the "normal" small block Mopar as opposed to the 318 Poly and later Magnum versions.

 

[stevedemon340]

I believe it stood for Lite Alloy..I remember reading that they were lighter than the old "Poly" 318 "A" and were referred as "LA"

 

[65Val]

I believe it stood for Lite Alloy..I remember reading that they were lighter than the old "Poly" 318 "A" and were referred as "LA"

I always thought it stood for "Late A" engine. The poly engines were referred to as "A" engines, so the later block was the "Late A" block.

 

[Oklacarcollecto]

If you have a casting number I have a casting book that goes from 1974 (I think) back. I will look up the numbers for you.