New Zealand Datsun Club

while working on the bluebird, brendan noticed the head casting number was different to his one.
my head is V91.
brendans head is U67, common L20b head.

i was just curious as to what the differences may be between all the different heads that the L series came out with.

i edited a few things above

my guess would be that you have a late model L20b head(1984 910), it may have bigger valves, higher compression combustion chambers, i would think the ports would be the same as any other L20b head though.

your head probably allows for better skids than my 910.