what to advace the timing to on a 4mm stroker

[banshee11]

i have a 4mm stroker with dune drag port and the timing is at 4 can it be bumped up more any ideas

[dajogejr]

Go to 6, then 8....and listen to your motor. Obviously, you're running race gas, 110 octane, right?
How much compression, what is your squish, what is your compression ratio???

[banshee11]

im running 110, the domes said .080 and i thought 19 cc does that sound right. i think i can also move my pilot jet to 52 from 55 to get a little bit more low end and my main from 165 to 162. does that sould about right.