Quetion on valves and line

How much slower is 1/4 valves and line Vs. 3/8? Any examoles or vieos I can see, so I can tell the shop what I want to run.

I would go with the 3/8 rember you can always slow it down if it too fast for you but you can never speed it up

i want it slow tho. Just want to see a vid of a truck laying out on 1/4, thanks for the help tho.

get 3/8" with slow downs. you can adjust them to any speed you want.