Sbc Fuel Pressure: Edelbrock's Sweet Spot

Edelbrock carburetors are designed to work with a maximum fuel pressure of 6.5 psi. Higher fuel pressure can cause the carburetor to flood, leading to engine stalling and other issues. Edelbrock recommends using a fuel pressure regulator to maintain the optimal fuel pressure and prevent flooding.

Edelbrock carbs don't like more than 6psi

Edelbrock carburettors are designed to work with a maximum fuel pressure of 6.5 psi. Higher fuel pressure can cause the carburettor to flood, leading to poor performance and potential engine damage. Edelbrock carburettors are calibrated to work with a fuel pressure of 5.5 psi for optimal performance.

To avoid exceeding the maximum fuel pressure, it is recommended to use a fuel pressure regulator to maintain the desired fuel pressure. A fuel pressure gauge can also be installed to monitor the fuel pressure.

Edelbrock offers a range of fuel pumps, including the Performer RPM Series fuel pump, which is designed to work with their carburettors and provides a fuel pressure of 6 psi.

It is important to ensure that the fuel pressure does not exceed the recommended level to prevent flooding and potential engine damage.

Edelbrock sells a line kit for hard lines

Edelbrock does indeed sell a line kit for hard lines. These kits are designed for Edelbrock Performer Series carburetors and include a chromed or black anodized hard steel line and fuel filter (also available with a 3/8" barbed inlet for standard rubber fuel hose). The hard line kit can be matched with the Pre-Fitted Stainless or ProClassic Black fuel pump to fuel filter lines to connect the fuel filter to an Edelbrock street fuel pump or any pump with a 3/8" NPT outlet for an easy and professional-looking installation.

Edelbrock recommends a 2,500 stall speed torque converter with a Performer RPM camshaft

When it comes to fuel pressure, there are a few things to consider when using an Edelbrock carburettor. The Edelbrock Performer RPM Series fuel pump for Small-Block and "W Series" Chevrolet is designed for use with all Edelbrock carburettors used in Performer or Performer RPM applications. This fuel pump can support engines with up to 600 hp and does not require a regulator. It is important to note that the Edelbrock 1406 carburettor does not like more than around 6 psi of fuel pressure.

Now, regarding your camshaft and torque converter, Edelbrock recommends a 2,500 stall speed torque converter with a Performer RPM camshaft. This recommendation is based on the fact that the Performer RPM camshaft provides power from 1500 to 6500 rpm, and the 2,500 stall speed torque converter will complement this power band. It is worth noting that the Summit Racing tech department suggests starting with the starting rpm of the camshaft powerband and adding 500 rpm to create a starting point for choosing the optimal stall speed.

When choosing a camshaft and torque converter combination, it is crucial to match the camshaft powerband with the operating range of the rest of the vehicle's setup. All the components must complement each other for optimal output. Additionally, specific camshaft specifications, such as lift, duration, lobe separation, and centreline, play a significant role in determining the powerband of the camshaft. Therefore, it is always best to refer to the cam card for detailed specifications and to consult with camshaft and automotive experts for personalised advice.

Edelbrock Performer series carbs are calibrated lean for fuel economy

The Edelbrock Performer series carbs are calibrated lean for fuel economy and in most cases, will not function properly on Performer RPM and Torker style manifolds. Most people think that you can just change the calibration of the carburetor and turn it into one of the Edelbrock performance carbs. This is not the case as the Venturi boosters are also different and Edelbrock does not sell Venturi boosters separately. In most cases, when using one of the economy-style carbs on a Performer RPM or Torker-style intake, you will experience hesitations and surging in the lower RPM range.

The Edelbrock 1406 Performer Series 600 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. The first of several characteristics that make the 1406 Performer Series 600 CFM electric choke carburetor an outstanding street performer is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to "hold a tune", so once it is tuned, the carburetor stays tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that's reliable, user-friendly, and is easily tunable for miles and miles of trouble-free operation. This carburetor is not recommended for use on RPM or Torker II intake manifolds. Calibrated for fuel economy.

The Edelbrock 1411 Performer Series 750 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to "hold a tune", so once it is tuned, the carburetor stays tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that's reliable, user-friendly, and is easily tunable for miles and miles of trouble-free operation. This carburetor is not recommended for use on RPM or Torker II intake manifolds. Calibrated for fuel economy.

Edelbrock recommends using a 170°F thermostat with Pro-Flo 4

Edelbrock's Pro-Flo 4 EFI system is designed for a range of engines, from 280 to 565 cubic inches in displacement and supports power levels from 200 to 825 horsepower for naturally aspirated engines and up to 1000 horsepower for forced induction setups. It is a port-style fuel injection system that delivers sequential port injection, enhancing engine performance and drivability by reducing manifold wall wetting.

The Pro-Flo 4 system includes everything needed for installation, such as the intake manifold, throttle body, injectors, fuel rails, hoses, sensors, ECU, harnesses, distributor, wide-band O2 sensor, and installation instructions. However, a high-pressure EFI fuel system and an inductive ignition coil are required separately. Edelbrock recommends using a canister-style inductive coil, such as their #22746 coil.

Frequently asked questions