B20 Engine No sequence

Massey165

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Try to work out which engine came from what. 1800Philes website see above has a detail list of all engine numbers but non match my numbers. see photos Appreciate any assistance

Roinik

Aren't the one that start with 8 from 1974 as the 8-bolt crank?

timbo

In the first picture is there a 4969 casting before the 42?

4969-42 would be a 69+ b20-e

Massey165

Thanks tim, so obvious when you have it explained. Only problem is that there is no 49 before the 69

I have 2 blocks with the 69

Massey165

The 42 block is the only one where I know where it came from 1972 P1800E

Major Ledfoot

Type 496905 is a 140 B20B engine from a 140.

Massey165

Thanks Guys, anyone know what was the engine No. when these caps started to be used?