Timing on a 421 cub

[badshee]

Need opinions of timing for my 421 cub, i was told to go to +8 but then was told to go back down to +4..

just shoot me some of your opinions and experiences with this motor.. thanks

[r/atvshee]

i've ran my 421 cub with the timing plate maxed out, also 18cc domes and 50/50 race/pump gas. if that helps

[Bansh-eman]

cubs love timing and compression. id go +7 and some 18 domes...

[locogato11283]

+7 here..

[rocketboy]

cubs perform best with high timing and huge carbs . on a 421 i would run 20cc domes with dual 39pwks with atleast +7 timing could even go +10...you will need high octane fuel over 100+ BTW