Holley jet size

[jbrowngunmaker]

Fellers,
I got my 472 in the Fiat Topolino running!  With my weird Lunati cam and the tunnelram with the two Holleys, it was an experience.  I have a tech question.  The front jets in the Holleys (4224 660cfm center squirters) are #76.  Does that seem right?  It seems a bit rich.  It's gonna have to have a higher stall converter than the 2500 I have though.  The cam is awesome!  I may have over egged the puddin'.
Jackie

 

[cadillac512]

Jackie-

  #76 is the factory jet for those carbs.Do those carbs have power valves? Maybe drop down a couple steps on power valve size if they do. If not,drop a couple jet sizes and see how it acts.
  I remember that cam.....lots of eggs in that puddin',lol.That light car would like a lot more converter I think.Nothing less than a 3500 advertised stall,maybe even 4000.  :twocents:

  Terry

 

[jbrowngunmaker]

Thanks Terry,
Knowing the 76's are standard makes me feel better.  I'm not sure it'll be too rich because I haven't done any final tuning with the timing.  You're sure right about the need for a higher stall converter.  I used the 2500 stall because I had it knowing it wouldn't be enough.  Either engine dies or wheels spin.  LOL  The wheels have no problem spinning though.  Thanks again,
Jackie