More 840 head questions...

[GMH454]

Can't help you BUT, you might have answered something that has puzzled me for a long time. Had a 435hp roadster for a while with a factory build date of early July 1969, and you can probably guess that it had one of each head. Never seemed to worry it as it could spin the 10" tyres effortlessly, but it sure had me perplexed. The head dates from memory were about 3 weeks apart. Car had been in Australia since early 1970 and the engine apart from loosing the tripower at some time had not been messed with. I figured that the 291 was a warranty replacement but now......
Terry from the land of OZ