Summit's new Street & Strip carburetor looks similar to other aftermarket performance carburetors; in fact, it closely resembles the Holley 4110 carburetor of the 1990s, a two-piece design that was a solid attempt at building a better street performance carburetor. Yet, Summit took a different approach by remedying many of the pesky carburetor issues we frequently complain about.
The Summit Street & Strip four-barrel is a performance enthusiast's carburetor. Available in 600-675-cfm configurations for approximately $250 and as 700-795-cfm versions for just a few bucks more (under $350, depending on how the carburetor is configured), the Summit Street & Strip is a great value with these features:
The Summit Street & Strip...
The Summit Street & Strip 600-cfm carburetor is an easy bolt-on for vintage small-block Ford engines. If you have a 351, it's suggested you go with 650-675 cfm for improved low- to mid-range torque. For FE big-blocks, step up to 700-750 cfm. Cobra Jets need 750-795 cfm.
- Solid aluminum casting-warp resistant for outstanding calibration.
- One-piece design eliminates traditional fuel leaks.
- 30cc accelerator pump; dual 30cc pumps for mechanical secondary versions.
- Interchangeable discharge nozzles and idle circuit restriction.
- Color-coded vacuum ports for easy installation.
- Extra thick base and gasket for better sealing.
- Externally adjustable center-pivot floats with clear sight-glass fuel bowls.
- High-flow power valve channel. Mechanical secondary carbs get two power valves.
- Easy electric choke adjustment.
- Each is wet-flow tested and ready-to-run right out of the box.
What's really cool about this carburetor is its use of Holley parts; it accepts virtually all Holley 4150/4160/1850 components. This means you can service the Summit Street & Strip carburetors with Holley power valves, accelerator pump diaphragms and cams, floats and float needle valves, main metering jets, choke assemblies, vacuum secondary springs and diaphragms, accelerator pump discharge nozzles, and linkage adaptors.
What we appreciate most about the Summit Street & Strip is its sweet compromise between the reliable Autolite 4100 and the traditional Holley 4150/4160/1850 carburetors.
The Street & Strip carbs use...
The Street & Strip carbs use an adjustable electric choke. You can wire it so it comes on when the ignition is switched on or you can go with a manual choke and dial in cold-start performance yourself.
Summit's Street & Strip carburetor...
Summit's Street & Strip carburetor presents some of the same challenges as a Holley when it comes to interaction with a classic Mustang. For example, throttle linkage is the same as a Holley, although Summit makes it easier with a throttle rod adaptor. If you don't use the Summit adaptor, use the small hole next to the large hole, then drill a small hole in the rod end and use a cotter pin for security just like you would with a Holley 4150/4160. All of the pieces are there for '69-'73 throttle cable.
The square-bore design is...
The square-bore design is compatible with just about any Ford four-barrel intake except the '71 spread-bore (Rochester Quadra-Jet) on the 429 (non-Cobra Jet).
Summit's procedure for float...
Summit's procedure for float adjustment is not new, but it's been effective for 50 years.
With the Summit carb, adjust...
With the Summit carb, adjust the float level up or down and watch the sight glass. There's no need to unscrew a sight plug.
Summit uses center-pivot Holley...
Summit uses center-pivot Holley floats and self-cleaning needle valves for reliable performance. The synthetic floats are ethanol resistant as well.
Blown power valves have always...
Blown power valves have always been a challenge with Holley and Autolite carburetors. Summit warranties its power valves for a million miles.
Vacuum-secondary Street &...
Vacuum-secondary Street & Strip carbs are fitted with a 30cc accelerator pump for just the right amount of fuel shot when the accelerator is pressed. With mechanical secondaries, a 30cc secondary accelerator pump is used for prompt power response when the pedal is mashed to the floor. Summit uses Holley accelerator pump cams. And if you must, you can step up to larger Holley accelerator pumps available from Summit.
Jet swaps happen without spilling...
Jet swaps happen without spilling fuel. Just remove the air horn and get after it. Because the floats are attached to the air horn, they don't get in the way. One challenge with air horn removal is that you must remove the choke assembly as well.
Booster venturis are traditional...
Booster venturis are traditional annular discharge types to spread the fuel mist evenly across each throttle bore. When the throttle is closed, fuel is metered via the idle circuit at the throttle plates.
Idle air/fuel adjustment is...
Idle air/fuel adjustment is in the traditional location, yet angled at 30 degrees for easy access. Because this is a pure aluminum carburetor body, the adjustment screws are less likely to wander out of adjustment over time.