Q-Jet identification?
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The "4M" indicates that it's a quadrajet. This can be preceeded by nothing in the case of pre-1970 non-emissions carbs, "M" for post-1970 emissions, or "E" for CCC feedback units. The letter following the 4M indicates the type of choke, "C" for hot air, "V" for divorced coil, or "E" for electric. There can also be other letters following the choke type to indicate options like altitude compensation, double-capacity accelerator pumps, etc.
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