Fueling & Injection - Dual inline pumps Series or Parallel

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Alvin

11-02-2008, 10:48 AM

I have two 255 lph pumps. One has been on the car for quite a while.. the other I just got free. Its the exact same brand and type just one is about 4 years older.

Should I replace one with the other, run them in parallel or what? I have a stock intake pump now but plan on going with a racetronix LT1 setup. Car is a 355 LT1 supercharged and I hope to make around 550 RWHP with it or so when I'm finished.

Nasty N8

11-03-2008, 10:16 AM

No need with the correct setup one single Walbro pump could support your 550rwhp.

Nate

RAACCR

11-03-2008, 11:27 AM

Nate,
Depending on the set-up he's got, he may be running an old school rising rate of gain regulator on that LT1 (those were pretty popular back in the day). If so, and he needs a lot of pressure...that might compromise volume on a single 255. Maybe the OP could post more specifics?