What are these 455 blocks out of?

Organizing the garage and moving spare parts around.
I have 2 spare blocks
One is punched WG on the block (I think it was from a 1972 225)
Does that sound correct?

The second i bought as a complete, punched SR with small diameter oil pickup.
1970 full size?

Thanks
Allen

 

I think the SR engine is a Riv engine.

 

SR = 70 GS 455 non stage as I recall


WG = ??

 

Found on buick.net


YEAR ENGINE TYPE CODE VIN

1972 V-8 350 2bbl WC H
V-8 350 4bbl single exhaust WB J
V-8 350 4bbl dual exhaust WB K
V-8 455 4bbl single exhaust WF T
V-8 455 4bbl dual exhaust WF U
V-8 455 4bbl, Stage I WS V
V-8 455 4bbl WA W Riv GS


I must have read the punch wrong, will check again tomarrow
My G must actually be a F.
Time for better lighting or new lenses in my glasses.

 

Yes - and the other large cars.

 

1970 SR = GS A body 455, and SF = all the rest... i.e. the big cars 455

 

thanks for the response

Allen