Dual In-Tank Pump System F99 1050LPH
Dual In-Tank Pump System F99 1050LPH
1999-2000 F-Body Camaro / Firebird Dual Fuel Pump System, 1,050 LPH, E85
A drop-in dual-pump in-tank system for 4th-gen F-Body cars: 2 x Walbro F90000285 (525/Hellcat) pumps in the factory tank, plug-and-play wiring, about 1,250 RWHP on gasoline.
- Every system is built for your order. We assemble it from parts we keep in stock, then test it before it ships. This typically takes 3-5 business days.
- “Out of stock” above does not mean unavailable. Whatever the store’s stock indicator shows, it does not reflect the parts we build from. You can order now.
- Need a firm delivery date? Email [email protected] before you order and we will confirm it.
- Feed, return and vent fittings are not included. You choose them to suit your car. We recommend our direct-fit quick-connect hose fittings: they are the simplest option and keep the profile low enough to clear the trunk or hatch floor. If your car already has lines, quick-connect EFI adapters are available too. Plumbing and port connections below shows which to add for each line; choose them under Add-ons at the bottom of this page.
The Racetronix QFPS-F99-1050 uses our patented pump interlock technology to fit multiple pumps in the factory tank with no modification: a “ship in a bottle” approach that allows up to four pumps and outlandish flow and horsepower. The design is simple to install and manage with moderate technical skills. It can be upgraded to three or four pumps later if you need more horsepower.
Key features
- 2 x Walbro F90000285 E85 (525/Hellcat pumps) on a billet CNC 6061-T6 aluminum staged drop-in hanger (upgradeable to three or four pumps).
- Fits the factory tank without modification, using our patented pump interlock technology.
- Ultra-low-profile manifold. The top hat is engineered to clear the minimal space between the top of the tank and the hatch/trunk floor in 4th-gen F-Body cars. Instead of ORB or JIC ports it uses EFI quick-connect ports (1/2-inch female for feed and return, 5/16-inch female for vent) to keep fitting diameter and deck height as low as possible while keeping full flow.
- Built for ethanol. Billet anodized 6061-T6 aluminum and 304 stainless steel throughout, with Viton (FKM) GF-600S seals for extra durability over standard Viton (FKM) with ethanol and oxygenated race fuels.
- 100% plug and play wiring with the factory harness; interfacing to an aftermarket engine management system is easy.
- Staged control: two dedicated 10-gauge pump circuits, each with its own 630-series 40-amp relay and fuse holder, each controlled independently. Two ground control jumpers switch primary and boost-staged pumps from pressure switches or pull-to-ground PCM outputs.
- Upgraded in-tank wiring: P.T.F.E. (Teflon) pump wiring and a 6-position bulkhead connector with dedicated power to each pump; high-current connectors with fuel-safe fluorosilicone seals.
Specifications and horsepower
| Part number | QFPS-F99-1050 |
| Fits | 1999-2000 4th-generation F-Body Camaro / Firebird |
| Pumps | 2 x Walbro F90000285 E85 (525/Hellcat pumps) |
| Flow | 940 LPH+ @ 58 psi @ 14.0 V (1,050 LPH nominal) |
| Power requirement | 14.0 V @ 40-55+ amps |
| Fuel types | Gasoline, E85, oxygenated race fuel |
| Pump circuits | Two (staged), 10-gauge, 40-amp 630-series relay and fuse each |
| Upgrade path | Three or four pumps |
Projected horsepower support
| Fuel | Projected support |
|---|---|
| Gasoline | Up to about 1,250 RWHP |
| E85 / ethanol blends | Up to about 1,000 HP |
E85 needs about 30% more fuel volume than gasoline, so it supports less power from the same flow. These figures assume properly sized fuel lines and high-flow components as listed under Requirements below.
How we estimate: each Walbro F90000285 flows about 470 LPH at 43.5 psi on our test bench at 13.5 V, and usually more. That is enough for about 500 flywheel horsepower on E85 per pump; the result depends on fuel pressure, target air-fuel ratio and BSFC. Many cars run a higher charging voltage, which raises flow and power support substantially.
Requirements and recommendations
- -8 AN P.T.F.E. feed line minimum (with direct hose fitting FIT-P8QDM12)
- -8 AN P.T.F.E. return line (with FIT-P8QDM12), or -6 AN P.T.F.E. return line (with adapter stack QDA-12M8 + ADF-497208)
- 10-micron or better high-flow fuel filter in a #12 filter housing
- Billet fuel rails with -8 AN ORB bore size
Recommendations
- High-current alternator (we highly recommend a Mechman 240/250-amp Elite Series high-output alternator)
- -10 AN P.T.F.E. feed line (with direct hose fitting FIT-P10QDM12) for max-effort twin-Hellcat configurations
- -8 AN P.T.F.E. return line
Fuel pump module features
- 2 x Walbro F90000285 E85 (525/Hellcat pumps)
- Billet CNC 6061-T6 aluminum high-flow manifold
- 1/2-inch female quick-connect discharge (feed) port
- 1/2-inch female quick-connect return port
- 5/16-inch female quick-connect tank vent port with an internal tip-over/check valve for the emissions (EVAP) system
- 6-conductor weatherproof bulkhead connector
- 6-conductor fluorosilicone-sealed in-tank electrical connector
- Upgraded, dedicated P.T.F.E. pump wiring (eliminates the Metri-Pack 280 connector for better reliability and less voltage loss)
- 304 stainless steel mounting shaft and level sensor mount with routing guide
- Nickel/bronze electrical grounding components
- Viton (FKM) GF-600S O-rings and seals for superior resistance to ethanol, race gas and similar fuels
- Nylon convoluted fuel tubes with 3/8" quick-connect fittings
- Factory-style ceramic level sensor for 1999-2002 F-Body cars (40-250 ohm)
- Optional 0-90 ohm level sensor for 3rd-generation F-Body cars retrofitted with a 1999-2000 plastic tank
Plumbing and port connections
Our direct-fit quick-connect hose fittings (marked Recommended) are the simplest way to plumb this system, and they keep the profile low enough to clear the trunk or hatch floor. The JIC adapters are for cars that already have lines with AN fittings. Fittings are not included; add them under Add-ons at the bottom of this page.
The quick-connect ports keep the manifold low. Add the fitting or adapter that matches each of your lines:
| Port | Your line | Add |
|---|---|---|
| Feed (1/2" female QC) | -8 AN P.T.F.E. hose | FIT-P8QDM12 direct hose fitting (Recommended) |
| -10 AN P.T.F.E. hose (max effort) | FIT-P10QDM12 direct hose fitting (Recommended) | |
| JIC male connection | QDA-12M8 (-8) or QDA-12M10 (-10) adapter | |
| Return (1/2" female QC) | -8 AN P.T.F.E. hose | FIT-P8QDM12 direct hose fitting (Recommended) |
| -6 AN P.T.F.E. hose | QDA-12M8 paired directly with ADF-497208 | |
| JIC male connection | QDA-12M8 (-8) or QDA-12M10 (-10) adapter | |
| Vent (5/16" female QC, tip-over/check valve) | 4th-gen chassis vent line | QDA-56M56 double-male adapter (snaps straight on) |
| 5/16" rubber hose (3rd-gen retrofit) | QDA-56M56 paired with QDA-56FHB56 hose barb adapter | |
| -6 AN P.T.F.E. hose | FIT-P6QDM56 direct hose fitting (Recommended) |
Photos
Questions and support
Not sure which system suits your build, or need a delivery date? Email [email protected] before you order.
Racetronix provides technical support to verified customers through our support forum. Please request forum access when you place your order so your account is approved before your parts arrive.
© 2026 Racetronix. All Rights Reserved. | Part No: QFPS-F99-1050 | Revision: Alpha
