What fuel pump should I use on my magnum 380 engine?

Question

right now I have 7.5 psi it seems to loose power at 5K rpm before I shift into 2nd gear, maybe lack of fuel? It has a 650 holley carb on it now. Thanks

Answer 1

Unless you have modified a 318 or 360, I have never heard of a 380. As far as the pump, if you think that is the problem, try an electric one.

Answer 2

a stock fuel pump will run any carburetor up to a 750 holley real good ,if you go to an electric one you,ll have to run a regulator on it other wise the pressure will be too much for the needle valve in the carb,and it will eventually cause a flooding condition on it,I'm running a 360 in  an old duster with and edelbrock 650 with electric pump cut down to 6.5 pounds of fuel pressure and it does good,but if you try and get above 7 pounds it tends to want to run rich on gas,and you cant keep the idle adjusted right,it sounds like you bought a crate engine,you might need to increase the size of the gas line coming from the gas tank on it, i had to do mine this way,the stock line was small,that may be the problem with it,either that or the timing is still a little off on it,good luck.

Answer 3

You need to increase the size of the fuel line from the fuel tank to the pump. If it's a 5/16 inch line go to 3/8's inch, if it's a 3/8's go to a 1/2 inch.

A 380 horse engine needs a lot of fuel at 5000 RPM and you don't want to be running it lean.