If you are using a factory gas tank, the return line should be as far away from the pickup as possible to prevent the returning fuel from frothing and disturbing suction. All that fuel going to the pump has to be replaced with air in the tank, so it needs a suitably sized vent with some kind of filter attached or fuel will stop flowing. This is a BG King Enduro that is designed for a 2,000hp dead-head systemthat will see a lot of street time. It uses a heat sink (shown at right) to coolthe fuel and an internal bypass to eliminate the problems created by astandard dead-head pump and regulator. There is also a new Speed Endurothat feeds up to 500 hp for regular guys like us. This is a BG King Enduro that is designed for a 2,000hp dead-head systemthat will see a lo Holley also has an internally regulated pump for street use. The HP 125is a gerotor-style pump, so it's quiet, and it can feed up to 650 hp. Holley also has an internally regulated pump for street use. The HP 125is a gerotor-style WiringThis is easy. You'll need to run a minimum 12-gauge or preferably 10-gauge wire from a battery source to the fuel pump using a relay, and then switch the relay on and off using a 12-volt source from the ignition key or, in some cases, a toggle switch. Since fuel pumps are simply electric motors, the amount of current supplied can affect the speed, and therefore the efficiency, of the pump. Ever had a low battery or a bad connection and had your starter spin really slowly, barely turning over the engine? Same thing. The minimum voltage you should deliver to the pump is 13.2 volts, but companies like Mallory advertise the maximum pump gph rating at 14 volts, so the closer you can get to the ideal between 13.5 and 14.2 volts, the better. Just as the power wire is important, the ground wire needs to also be 12 gauge or larger and attached to a clean portion of the frame near the pump. If the pump is straining or getting hot, check the ground circuit first. PARTS LIST DESCRIPTION PN SOURCE PRICE Autogage fuel-pressure gauge ATM-2180 Summit Racing $31.95 BG 220HR fuel pump 170013 Jegs High Performance 249.99 BG King Enduro fuel pump 170044 Jegs High Performance 515.99 BG diaphragm bypass 171021 Jegs High Performance 69.99 BG fuel-cell-to-pump kit 152387 Jegs High Performance 141.99 BG pump-bypass to return-line kit 150187 Jegs High Performance 66.99 BG fuel-pump-to-regulator kit 150287 Jegs High Performance 195.99 BG regulator-to-dual-carb kit 151587-6 Jegs High Performance 183.09 BG regulator-to single-carb kit 151687-6 Jegs High Performance 94.50 Competition Engineering fuel-tank sump kit C4040 Summit Racing 61.88 Mighty Demon TR 650 carbs, each 5282010GC Jegs High Performance 549.99 Edelbrock mechanical fuel pump 1721 Summit Racing 85.88 Edelbrock electric fuel pump 1791 Summit Racing 145.88 Hogan's Racing Manifolds tunnel-ram N/A Hogan's Racing Call Holley HP125 fuel pump 12-125 Summit Racing 179.95 Weiand tunnel-ram linkage kit WND-4032 Summit Racing 165.95 Summit Racing aluminum fuel cell 291220-SC Summit Racing 314.95 SOURCES Aeromotive Inc. 7805 Barton St. Lenexa KS 66214 Holley Performance Products 1801 Russellville Rd. Bowling Green, KY 42101 KY 42101 270-782-2900 www.holley.com Barry Grant Fuel Systems Dahlonega GA 7-06/-864-8544 barrygrant.com Jegs High Performance Delaware OH N/A www.jegs.com COMP Cams Rick's Hot Rod Shop El Paso TX 9-15/-760-4388 rickshotrodshop.com Competition Engineering Guilford CT 2-03/-453-6571 moroso.com Summit Racing Equipment P.O. Box 909 Akron OH 44309 Hogan's Racing Manifolds Santa Maria CA 8-05/-928-8483 hogansracingmanifolds.com « | 1 | 2 | 3 | 4 | View Full Article By Barry Grant Fuel Systems Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!