1967 Fairlane Super Stock

[Dwight Southerland]

Rusty -
Defintiely get that cleared up from NHRA Tech Department. Reading the tech specs and the carb list in the approved products document, it is clear to me that the carb is a ~600 cfm Holley, not a ~780 cfm. The footnote on the 1968 Ford Tech Bulletin says the carb spec is 1.563"x1.563" throttle bores and 1.250"x1.313" venturis and the same specs are listed for a 390. There is no 780 size carb listed for a 390 in 1968. The 1966 and 1967 390 GT engines are allowed the 780 carb as a replacement, but not any other years.


When you ask for clarification from NHRA, note to them that the Approved Products document has a note beside the Quick Fuel SSR-585-VS carb that says it replaces the Holley 3245 and 3806 carbs, neither of which is listed in the Tech Specs for the 1968 Ford 302-230hp engine. While the original carb has the same throttle bore and venturi dimensions, their technical document does not specifically state that the QF carb is a legal replacement. That needs to be verified.