Mystery block
#1
Mystery block
I need help identifying an Olds block. I thought at first it was a 72 350 because it had 7A heads. (I had forgotten about the later 7A heads that had the "A" in a different position) The EGR valve also gave it away as not being a 72. The numbers behind the water pump really confused me but they are probably wrong anyway. I did my best to scoop away the grime but this is the number I got: 4790GM5-OLG...? upon researching the closest number I found was 554990 which was a '77 403. Any ideas?
#2
Im thinking its a 307. On the side of the block below the center freeze plug, it should say what size the engine is. If it is a 307 it will say 5L, it will have the cubic inches for a 350 and 403. Where did this engine come from?
#4
It was in a Cutlass G body. but the guy said it was not original.
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