ep240 pump good enough?

[kipps]

I have an ACdelco ep240 pump, with only a few miles on it. This was installed as an upgraded TBI pump, but then I changed direction, and am going with a LS motor.

I've gotten conflicting data on whether the ep240 will support a stock(325-ish hp) LS motor long-term. Some folks say the ep240 will easily handle a LS, others say it won't.

Should I pony up the cash, and replace that pump with a ep381? Or would it be a waste of money?

[mongocanfly]

i used a walbro 255 on my lq9..makes 344hp..no issues
im not sure it compares to yours

[Wildkarde]

From what I can find, the ep240 only outputs ~51 psi, thats not enough for an ls, they need 58. You could probably make a 5.3 run on that pressure but it would need tuning work to do it. Cheaper to buy the higher pressure pump.

[mongocanfly]

I just found this on jegs...its says 94 max psi....http://www.jegs.com/i/ACDelco/065/EP240/10002/-1

[Wildkarde]

Well, max pressure isn't working pressure, who knows how little flow it would have at that pressure. Its also only rated at 15GPH flow rate, which is only good for ~180HP. Far too little for any ls engine.

[mongocanfly]

I had to go search what my walbro is cause I couldn't remember....its 67 gph