440 or 434

[Moparkido]

What big bore kit should I get? I ride motocross so I need something good for that

[cataway]

440











then +4 the crank and RHC cams

[cjmadison9]

i got a 434 kit an i race b class, i have no problem with power honestly, it also does real good on starts the wheels spin less than the 450 do it hooks up better, but 440 would be nice to