Carb question

[hipower17]

putting a 750 on a 604 can anyone give me a starting point on what jetting i should use?

[hpontap]

Nobody else?
My answer is still the same as last time.
#73 jets all around with a 4.5 power valve.
If you have any doubts, put a fresh set of plugs in it, hot lap the car and do a plug reading.

[usafracer]

Gas or alcohol?

[hipower17]

its gasoline

[50j]

Not all 750 carbs are built the same so jet size can be different from one to another. The fuel properties also affect jet size. Nobody can accurately answer the question without more info so be careful.

[brad hibbard]

very well said 50j
jet question is a daily phone call here and they all get the answer that you just provided

questions to ask--
what fuel?
what style and size booster?
what size orifice behind the power valve?
what size air bleeds?
what arrangement is the emulsion pack?
normal altitude ranges?
plug in these numbers and we can get close on jetting

Brad

https://www.race-1.com

[fastford]

start with the 72.s it probably came with and do what was suggested above , learn to read the plugs.......