Twin 340lph on E85 questions
I’m running a 6l with 20lbs of boost and E85, and my pressure has been dropping off at top end. I can get about 65 psi and then it drops hard. I had upgraded the pumps from 255’s thinking it would be enough but it looks like I may be wrong.
is anyone else running a similar setup that is taking these pumps to 800whp on E85?
Only reason I didn’t go with larger pumps was I’m limited on space. The larger frames won’t fit in my 96 impala tank.
I’m running a 6l with 20lbs of boost and E85, and my pressure has been dropping off at top end. I can get about 65 psi and then it drops hard. I had upgraded the pumps from 255’s thinking it would be enough but it looks like I may be wrong.
is anyone else running a similar setup that is taking these pumps to 800whp on E85?
Only reason I didn’t go with larger pumps was I’m limited on space. The larger frames won’t fit in my 96 impala tank.
I’m running a 6l with 20lbs of boost and E85, and my pressure has been dropping off at top end. I can get about 65 psi and then it drops hard. I had upgraded the pumps from 255’s thinking it would be enough but it looks like I may be wrong.
is anyone else running a similar setup that is taking these pumps to 800whp on E85?
Only reason I didn’t go with larger pumps was I’m limited on space. The larger frames won’t fit in my 96 impala tank.
The advertised flow of a fuel pump is usually at a specified psi. Usually around 40ish psi in my experience. Go over that and fuel flow will drop.
I have a stock 6L ls2 running 10 pounds on e85. I have 2 400lph pumps with 1000cc injectors making between 560-600rwhp. Originally I calculated that I would need about 450lph for that amount of power, so I got a second pump just in case. Overkill for sure.





