- Home »
- Catalog »
- Air & Fuel Delivery »
- Fuel Regulators
Fuel Regulators
Pontiac V8 Fuel Regulators
Controlling the Pump — Fuel Regulators for Pontiac V8s
A fuel pressure regulator is what keeps the pump from overwhelming what it feeds. Too much pressure for a given needle and seat will flood a carburetor and cause drivability problems, and an EFI system will not run right unless base pressure is where the calibration expects it. On a Pontiac V8, this is the part that makes a big pump usable.
Butler stocks bypass and dead head regulators for carbureted engines and EFI regulators from Holley, Sniper, Rob Mc Performance, Edelbrock, FAST and Tanks Inc, plus complete fuel line kits with the regulator already matched to the system.
Browse Fuel Regulators Products
Items 1-16 of 16
Description: Carb/EFI
3/8" NPT Male to 3/8 Hose Barb
Black Anodized Fittings
Item #: BPI-3/8-HB-FITTING
Condition:
New
Price: $6.92
Description: We have packaged this regulator along with the ORB to -6AN adapter fittings needed to run -6AN fuel line. Also included in this kit is the plug so the regulator can be plumbed before or after the engine.
Item #: TAN-BYP7911-KIT
Condition:
New
Price: $149.95
Description: Adjustable pressure range of 5-10 PSI
-10 ORB Inlet and Outlet
-6 ORB Return
180 Gallons Per Hour
1/8" NPT Gauge Port
Vacuum Boost Port with 1:1 Boost/Vacuum Rise Ratio
Black Anodized
Item #: EDL-174053
Condition:
New
Price: $199.95
Description: We have packaged this regulator along with the ORB to -6AN adapter fittings needed to run -6AN fuel line. Also included in this kit is the plug so the regulator can be plumbed before or after the engine.
Item #: TAN-BYP7910-KIT
Condition:
New
Price: $149.95
Description: Fuel Pressure Regulator Kit
(2) -6 AN O-Ring Inlet
(1) -6 AN O-Ring Outlet
Adjustable From 30-70 PSI
Black Anodized
Item #: FAS-307030
Condition:
New
Price: $199.95
Description: Includes 25 feet of line and all or most of the fittings that you need to plumb your Carbureted fuel system
Item #: TAN-CARB-LINE-KIT45
Condition:
New
Price: $312.95
Description: Includes 25 feet of line and all or most of the fittings that you need to plumb your EFI fuel system
Item #: TAN-EFI-LINE-KIT45
Condition:
New
Price: $355.95
Description: Holley EFI universal bypass fuel pressure regulators are for use with fuel systems in street or track applications.
Item #: HLY-12-894KIT
Condition:
New
Price: $249.95
Description: Chrome Die Cast Fuel Regulator - 60 PSI
Item #: HLY-12-882
Condition:
New
Price: $103.95
Description: Street/Strip Carbureted Applications
Two Port
Adjustable from 4.5 to 9 PSI
Item #: HLY-12-803
Condition:
New
Price: $51.95
Description: Billet Sniper EFI Fuel Pressure Regulator with Bracket
Item #: HLY-19-392
Condition:
New
Price: $189.95
Description: Adjustable pressure range of 3-10 PSI
-10 ORB Inlet and Outlet
-6 ORB Return
300 Gallons Per Hour
1/8" NPT Gauge Port
Vacuum Bost Port with 1:1 Boost/Vacuum Rise Ratio
Made in the USA
Item #: RMC-1051
Condition:
New
Price: $184.95
Description: Dead–head (non–return) style regulator does not require a return line from the regulator
Made in the USA
Item #: RMC-1050
Condition:
New
Price: $167.95
Description: Adjustable pressure range of 10-80 PSI
-10 ORB Inlet and Outlet
-6 ORB Return
180 Gallons Per Hour
1/8" NPT Gauge Port
Vacuum Bost Port with 1:1 Boost/Vacuum Rise Ratio
Made in the USA
Item #: RMC-1047
Condition:
New
Price: $159.95
Description: Adapter, -6 Flare X 3/8 NPT, Black
Item #: RUS-660463
Condition:
New
Price: $5.95
Description: Adapter, -6 Flare X 3/8 NPT, Endura
Item #: RUS-660461
Condition:
New
Price: $5.95
Items 1-16 of 16
Popular Brands:
More About Fuel Regulators
1. Carbureted or EFI, and how far apart they are
The pressure ranges do not overlap, so this is the first thing to get right. A regulator built for one will not do the other's job.
| Carbureted | Single-digit psi. Butler's carbureted regulators cover roughly 3 to 10 psi depending on the unit, with the Holley HP billet adjustable from 4-1/2 to 9 psi and the Edelbrock, Tanks Inc and Rob Mc bypass units in the 3 to 10 psi range. |
| EFI | Much higher. Butler stocks EFI regulators adjustable from 10 to 80 psi, 15 to 90 psi, 30 to 70 psi, 35 to 90 psi and 40 to 130 psi, plus a fixed 60 psi die cast unit. |
| Convertible | The Tanks Inc carbureted bypass regulator can be converted to EFI pressures with a rebuild kit, and the EFI version can go the other way. |
| Required, not optional | Butler specifies the Edelbrock adjustable bypass regulator as necessary when running a PA series in-tank pump assembly on a carbureted engine. |
2. Bypass or dead head
This is the real decision in the category, and it changes what else the car needs.
| Bypass | Excess fuel returns to the tank through a return line. Rob Mc lists the advantages as eliminating pressure creep and vapor lock, decreasing pump noise and increasing pump efficiency compared with a dead head regulator. Bypass regulators require a return line from the regulator back to the tank or cell, and are for electric pumps only. |
| Dead head | No return line required. Butler stocks a Rob Mc billet dead head regulator listed for electric or mechanical low pressure pumps, adjusting from 3 to 10 psi and working with pumps up to 300 gph. It is specifically not for high pressure fuel injection pumps. |
| The pump decides | Rob Mc lists the dead head regulator as required when using their 1100 hp Six Valve mechanical pump. |
| Where the return goes | If you choose bypass and the tank has no return provision, a hi flow sending unit with a 1/2" return tube is how you add one without cutting the tank. |
3. Reading the specifications
Beyond the pressure range, four numbers separate these regulators, and they are all in Butler's product data.
| Flow capacity | The Edelbrock, Tanks Inc and Rob Mc EFI bypass regulators are rated at 180 gallons per hour. The Rob Mc carbureted bypass is rated at 300 gph. Match the regulator to the pump, not to the engine. |
| Port sizes | Several use -10 ORB inlet and outlet with a -6 ORB return. The Holley die cast unit uses 3/8" NPT inlet, outlet and return. The FAST unit has twin -6 feed ports and one -6 return. |
| Boost reference | Most of these carry a vacuum and boost port with a 1:1 rise ratio, which is what a blow-through or pressurized application needs. |
| Gauge port | Nearly all have a 1/8" NPT gauge port. Use it. A regulator you have never put a gauge on is a guess. |
| Internal orifice | Rob Mc calls out a .375" internal orifice and 50 percent less pressure drop at full throttle than other popular regulators of similar size. The Sniper EFI unit uses an oversized bypass orifice and a corrugated diaphragm for flow. |
4. Kits, fittings and fuel compatibility
Most regulators arrive needing fittings, and Butler stocks the kitted versions to save you sorting that out.
| Regulator kits | The Tanks Inc carbureted and EFI bypass regulators are packaged with the ORB to -6AN adapter fittings to run -6AN line, plus the plug so the regulator can be plumbed before or after the engine. |
| Complete line kits | Butler stocks fuel line kits for carbureted and EFI engines that include 25 feet of -6AN hose, the fittings, a filter and the matching Edelbrock bypass regulator. The carbureted kit is not recommended for pumps flowing over 255 lph. |
| Gauge included | The Holley EFI 15-90 psi kit includes a Holley fuel pressure gauge, mounting bracket and fittings. |
| Fittings sold separately | The FAST EFI regulator requires port fittings purchased separately, all three ports being -6 SAE o-ring type. |
| Fuel type | Several use a fluorosilicone diaphragm and are compatible with all grades of gasoline and with methanol or alcohol. Check the individual unit if you run anything but pump gas. |
Decide bypass or dead head first, then pressure range, then flow capacity against your pump. Put a gauge on it during the first start and set base pressure before you ever touch a jet or a tune.
Not sure what your Pontiac needs?
Call our tech team at 866-762-7527. Tell us your engine, heads, car, and power goal, and we will put the parts together as one combination that works.