Dual In-Tank Pump System, G7X Turbo Buick, G-Body 1050LPH
Dual In-Tank Pump System, G7X Turbo Buick, G-Body 1050LPH
1050 LPH E100 Dual In-Tank Fuel System, 1984-87 Turbo Buick
- CnC Billet T6 Aluminum Modular Dual Fuel Pump Hanger
- Patented "Pump Stacking" Modular Design for easy installation
- 2 x Walbro F90000285 525 LPH (Hellcat) Fuel Pumps
- Weatherproof 100% plug & play heavy-duty wiring harness
- Massive -10 AN ORB outlet, -6 AN ORB return ports
- Dedicated pump circuits with new 6-way bulkhead connector
- Includes a new stainless-steel locking ring, OE-type tank gasket
- 90 ohm ceramic level sender resistor (analog dash - standard)
- 120 ohm ceramic level sender resistor (digital dash - optional)
- Multiple optional feed & return port configurations
*SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
For the majority of builds, the Racetronix FLK-G7B5 PTFE kit (-8 feed / -6 return) provides more than enough volume to outperform any standard dual-pump setup. However, to unlock the "extreme edge" potential of the 1050 LPH configuration (typically required for maximum effort E85 builds), an upgrade to a -10 PTFE feed line is required. This larger line helps eliminate line-side restriction, offering an additional 150 to 200 HP of stable fuel pressure headroom.
THIS SYSTEM CANNOT BE USED WITH FACTORY FUEL LINES PERIOD!
Upgraded plumbing is mandatory. The use of barb adapters to interface with factory fuel lines is strictly prohibited.
For more information on custom custom hose options, rail configurations, and direct ORB fittings, please refer to Question 18 in the Technical Q&A section below.
- Plug & Play (no cutting or splicing required)
- Weatherproof factory connectors
- Heavy-gauge automotive-grade copper wire on main power feeds and intermediate harness
- Heavy-duty weatherproof relays mount behind fuel tank (no under-hood clutter)
- Weatherproof dual fuse holder with stainless bracket (mounts on back of alternator)
- Pump power indicator lamp outputs
- Swap-able primary / secondary pump ground control connectors
- Alternator-direct power for maximum pump performance
- Silicon grease, spare fuse, wire ties included
- Stainless steel mounting hardware
- 15 PSI Hobbs pressure standard switch with interface harness (optional 4, 7 and 10PSI)
- Body ground upgrade with battery nuts (included)
* This DPWH-G77 HD DP harness is an upgraded version of our FPWH-021HD harness only sold with our new 500/700/900/1050 DP senders.
A. A 15 PSI Hobbs pressure switch and interface harness are included with the system as standard equipment. 15PSI is the best pressure at which to activate the secondary fuel pump in most Turbo Buicks. Ideally the secondary pump should be activated approximately 100HP shy of the primary pump running out of fuel to prevent pressure spikes or lean conditions. We recommend using either your computer or our Hobbs switch to control the secondary pump. This reduces the electrical load, fuel heating and wear on the secondary pump.
A. This hanger can accommodate any 38mm body pump such as a 255, 340, 450 or 525LPH pump in single or dual configuration. Currently we are only offering this system with 2 x Walbro F90000274 or 2 x F90000285 pumps. NOTE: WE DO NOT ACCEPT CUSTOMER-SUPPLIED PUMPS TO BE INCORPORATED INTO OUR DP SYSTEM PERIOD!
A. The DPFS-G71050 DP hanger uses Walbro F90000285 pumps which are 100% Ethanol compatible. Fuel system health will impact pump life.
A. We DO NOT offer this item as a D-I-Y kit.
A. NOTE: ALL DP SYSTEMS ARE SOLD AS COMPLETE TESTED SYSTEMS. WE DO NOT ACCEPT CUSTOMER-SUPPLIED PUMPS.
A. Yes, please specify the digital dash level sender option when ordering your system.
A. For most users, our FLK-G7B5 (-8 PTFE feed / -6 PTFE return) is the ideal balance of performance and ease of installation. Even with -8 lines, this 1050 system provides significantly more flow than the 900 model. Only builds operating on the extreme edge (max effort E85) should consider a -10 PTFE feed line.
A. The factory steel lines running up the front of the motor.
A. Yes, we recommend a voltage booster for increased system voltage which benefits pump performance under WOT only.
A. Racetronix REG-G7B1 (factory location / side port) or Racetronix REG-FI886BS universal with aftermarket rails.
A. All technical and warranty support is now provided by your Racetronix dealer ONLY!
A. Typical test bench specs with 2 x F90000285 pumps:
• 1040 LPH @ 43.5psi @ 14.0v @ 41.6A
• 1210 LPH @ 43.5psi @ 16.0v @ 46.2A
• 840 LPH @ 80.0psi @ 14.0v @ 51.0A
• 1000 LPH @ 80.0psi @ 16.0v @ 56.4A
A. Multiply HP by 0.42 for fuel in LPH with a 20% safety margin. Use the flow data above to confirm output at your maximum boost pressure. Note that line restriction must be factored in; for maximum stability at extreme HP, a -10 feed line is necessary.
A. The Walbro 525 (Hellcat) pumps are the highest-flowing pumps available for this modular hanger.
A. Older kits with 45° JIC fittings are not compatible. Adapt them by replacing heads with straight male ORBs: FIT-680706 (-6) or FIT-680708 (-8).
A. Yes, to unlock the final 150-200 HP of headroom. However, routing a -10 line is a custom technical task, as there is no simple route through the factory frame rails.
A. Not currently. Custom routing is required, including passage through the seat frame brace elliptical hole. We offer all necessary components for those with the technical capability to assemble their own -10 system.
A. For maximum flow, use direct ORB straight hose fittings. These screw directly into the hanger and maintain a full-bore flow path without the restriction of a JIC flare:
- -10 Feed Fitting: FIT-680710 (Direct -10 ORB to -10 PTFE Hose)
- -8 Feed Fitting: FIT-P8RM10 (Direct -10 ORB to -8 PTFE Hose)
- -6 Return Fitting: FIT-680706 (Direct -6 ORB to -6 PTFE Hose)
- High-Quality Hose (-10): TFT-1170-10B (Static-dissipative PTFE with Hytrel® coating)
- High-Quality Hose (-8): TFT-1170-08B (Static-dissipative PTFE with Hytrel® coating)
- High-Quality Hose (-6): TFT-1170-06B (Static-dissipative PTFE with Hytrel® coating)
Rail Plumbing: Whether using the side-port REG-G7B1 or universal REG-FI886BS, several routing methods are valid. The critical factor for high-flow stability is a high-quality crossover line to ensure pressure balance between the rails.
