Does anyone have an idea of when the injectors would need to be changed from the stock injector to say a 30 lb or a 35 lb injector? Is there sufficient capacity in the stock injectors to cover the larger cams and other modifications that make up to 400 Hp or over?
Thanks for your help.....

 

most all heads and cam builds can use the stock injectors/pump but a larger disp. engine or a power adder over 4psi will need 30 or higher.

 

Thanks for the input. I bought a set of 30 lb. I had read that it is not good to go in excess of 80% of the rated rate as a safety margin. That would be 24 lb for a 30 lb injector. I will have to calculate where that might put things.