Quote:

[quoteyou're correct on size. the 950cfm rating is bogus.



Or is the 850cfm rating bogus? Or is the 1000 cfm rating bogus on the HP carbs which have the same size venturis and throttle plates as the 4781 850s??

Or should all CFM ratings be taken with a grain of salt?

The 950 PF main body venturis are smaller than the Holley 950 main body.

i believe all the HP ratings are inflated. the older vacuum secondary and double pumpers are closer to their ratings. i don't pay much attention to cfm ratings. it's just a marketing ploy that the buying public has taken hook, line, & sinker. it's easier for most people to take the manufacturer's rating as gospel than to dig into the statistics of the product and make an informed decision.