jet sizes for 602

[JAMESGANGRACING]

have a 80541 650 hp carb, what jet sizes would be good starting point?

[zlssefi]

What fuel?

It all depends what fuel your running. Could be anywhere from 68 to 80

[JAMESGANGRACING]

92 Pump clear

[zlssefi]

I would start with 73 all the way around. I run a high banked 5/8 track and find that on pump gas a little more jet keeps the engine cooler on the long straights. if you run a real short track you could prob go down to around 71.

[kevind19]

Not to hyjack the thread but with the 650 HP do you leave the drilled throttle plates on it? Also do you leave both power valves at a 65?