I am planning to have some where around 450 - 500 HP N/A to the wheels on my new 383 motor. I have 48# injectors and a aeromotive fuel pump 11103 (good for 700 hp) I am wondering if the fuel lines are going to be big enough? I have seen some LS1 cars running that much HP with stock lines and rails, but I just was not sure about the LT1. just for your information in the future when the car is a track/weekend car i am panning to make more HP (goel of 600 n/a) but that is about a year or so down the road. so even if I can handle 500hp, would I be able to handle 600hp? If not what would you suggest?

 

a buddy of mine has a turbo lt1 car and he is running stock lines and pushing right at about 700 rwhp. so yeah i would thing you are good.