604 Jetting

[RacerX10]

Can anybody suggest a good starting point on jetting a 604 ?

Race Demon 750 carb.

I can read plugs, just need to know where to start.

Thanks !

[RacerX10]

88 views and nobody has any idea on jetting a 604 ?

I stuck a 76 in the primaries and 77 in the secondaries, is that an ok starting point ?

[50j]

Nobody I know of uses them on 604 motors so that's probably why you haven't gotten responses, but the stock jetting is #75 and #75, 6.5 power valves.

[RacerX10]

Nobody I know of uses them on 604 motors so that's probably why you haven't gotten responses, but the stock jetting is #75 and #75, 6.5 power valves.

Thanks 50j, that's close enough that I know I won't be too far off to start with.

[car23]

i have a worked 650 holley and i am on 69s now. would prob be a safe starting point for a 750. depends on fuel type also

[Lazer-10]

Dont have an answer for you but I would like to know how you make out with the 750 as I have been thinking about putting one on my 604. Please let us know how it works and I ran the 750 demon on an IMCA motor with 73 front ant 78 rear with great results.