holley red and blue whats the difference?
 

whats the difference with red and blue fuel pumps

? anyone

flow and prssure. Red is less on both. You dont need the blue unless oyu plan on using a holley carb (or possibly another aftermarket carb). The red is more than enough pressure and flow for a nikki (stock carb). Make sure you buy a good fuel pressure regulator and a fuel pressure gauge. 2.5 to 3 PSI seems to be the norm for the nikki.

can i use the red on a holley carb from racing beat or is blue betterracing beat told me to get a fuel pump at 10psi