We've just put a rebuilt 460 (9.2:1 compresion with a mild performance cam) into our '76 4 x 4 and are using a Holley 750 cfm Vac. seconday carb (that's what was lying around in the shop at the time) that was previously jetted for a race application.
Can anyone recommend a good starting point for primary and secondary jetting?

Thanks, Dave
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If It's a Vac Secondary(list number 3310) you wont have any jets for the secondarys unless you have done some mods to the carb. I forget what jets I have in mine on my 351w. I'll have to rebuild it before race season next year now. Thanks for reminding me!

 

72,s in the front @ 82,s in the back is a good place to start. 6.5 power valve.
is a good place to start.
I hope this helps HOTWRENCH