fuel problems

[Grant Bowker]

I have just searched Macs Auto Parts web site for "fuel pump push rod" - they list 4 lengths:
60 HP Aluminum intake 5-3/8"
60 HP Iron intake 6-3/8"
All other V8 Aluminum intake 7.87"
All other V8 Iron intake 8.87"
Since the 60HP are measured in fractional inches, I wonder if the others are a truncated measurement since 7/8"=.875".
This should give something to compare your pushrod to to see if it is worn.