What Fuel Pump for 700whp E85 NA Motor?
Hi all
Looking for recommendations for a fuel pump for a up-to-700whp NA motor running E85. Stock Z06 pump can't keep up. I have come across DW external pumps and Racetronix / Walbro in-tank options, but what's working based on actual experience? |
We used the following on our 500 cubic inch LS that made 675rwhp on 93:
LPE L710140105 Racetronix FPWH-008 Racetronix IPH-008 You can also add a voltage booster if you would like, but likely not needed. |
With 1050X injectors, I'm running the Walbro 450 with Racetronix Hotwire kit. Worth noting I also run a DC Power billet alternator to make sure I've got adequate amperage at high RPM to the pump as well.
I also have a mechanical fuel pressure gauge at the rails to confirm 60+ psi at 7800 RPM. 700 +/- 10 RWHP on E. |
A walbro 450 should do it. I ran a Walbro 525 and had some pressure drop issues at higher RPM. I also ran the hot wire kit and 8an feed line. The 525 flows too much for the stock hat. I made 707whp, NA.
My new engine should make close to 800whp. I modified the stock hat and run the Racetronix dual 340lph pumps, now. |
Originally Posted by FNBADAZ06
(Post 1606924782)
With 1050X injectors, I'm running the Walbro 450 with Racetronix Hotwire kit. Worth noting I also run a DC Power billet alternator to make sure I've got adequate amperage at high RPM to the pump as well.
I also have a mechanical fuel pressure gauge at the rails to confirm 60+ psi at 7800 RPM. 700 +/- 10 RWHP on E. |
This is what is replacing the noisy aeromotive very difficult to install though.
https://cimg1.ibsrv.net/gimg/www.cor...be111eb57.jpeg |
Originally Posted by Farmvette
(Post 1606925538)
Is that using the Racetronix C6 Fuel Pump Module with the Walbro 450 pump, or an external Walbro 450 pump?
They didn't offer a complete kit back when I did mine. |
I could be wrong, but I believe the lingenfelter and racetronix modules use the same walbro 274 fuel pump. I have the lingenfelter kit to install if e85 kills my stock pump. So far it's keeping up at 40% e
|
Hi all
Thanks for your inputs. I went with the Racetronix TU475-450 LPH in-tank pump module with the Walbro 450 and wiring harness upgrades, and it's running fine; car made ~670whp on E85 and holding 58-61psi fuel pressure. |
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