Larger valves 12v head?

[dodgedsl]

Does anyone know if putting .100 larger valves in a 12v head for a pulling truck help or hurt the engine performance?

 

[lenahan05]

it helps dramatically. from a stock head with stock valve that flows 125cfm to a .100 bigger valve in a stock bore with a fully ported head you can gain approximately 90cfm over stock flow numbers. it's going to be around 85% more air than stock. heck yes it will help performance and will not hurt the engine at all. assuming it's strong enough to handle the power of course.

 

[1/2TONCUMMINS]

Does anyone know if putting .100 larger valves in a 12v head for a pulling truck help or hurt the engine performance?

What valve size and spring combination do you plan on running as i am interested myself. What brand of valve and where are you going to purchase valves from. Thanks for any info. Jimmy