 | Length measurement measures the threads only. Do not include the head. A- Bowl cover screw 10 x 32 x 5/8" 80-83 B- Pump diaphragm screw (4) 8 x 32 x 1/2 80-45 C- Choke Valve (2) S104 D- Fast idle (1) 6 x 32 x 5/8" E- Power valve cover (4) 6 x 32 x 1/2" 80-45 F- Thermostat cover (3) 8 x 32 x 3/8 80-43 G- Choke housing (3) |
Hose barb fitting for the 1/2 hole with inverted flare, 90-118:
85-48 Cleanout PlugThe Autolite 4100 carburetor comes with different venturi sizes depending on the specific model.
1.08 Venturi Version:
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- This version has 1.08 inches primary and secondary venturi diameters.
- It is typically rated at 480 CFM (Cubic Feet per Minute), which is the amount of air it can flow.
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1.12 Venturi Version:
- This version has 1.12 inches primary and secondary venturi diameters.
- It is typically rated at 600 CFM, making it suitable for higher-performance engines.
1.21 Venturi Version
- Rated at 351 CFM
- Typically found on the largest Ford engines that used the 2100 carb, such as the 390 and 428
The venturi size plays a role in the carburetor’s airflow capacity and overall performance. The 1.08 version is often used on smaller or less powerful engines, while the 1.12 version is intended for larger or more performance-oriented engines.
