quote:Most people aren't even aware there was a heavy duty 351C racing block in the US prior to the introduction of the Australian block (introduced circa 1976). The Australian blocks were cast because Bud Moore ran out of his US cast heavy duty blocks circa 1975.
George,
Is there anyway to identify the "Heavy Duty" and "Australian" blocks?
I ask because there was a recent post of an Australian block for sale. Are they 4-bolt blocks?
Steve