Clarification of Carb Rules - Prep 2
#27301 from Production Committee · Rule change · TB 19-09 (2019-09 Fastrack)
In Production GCR section 9.1.5.E.2.b.1., make changes as follows:
9.1.5.E.2.b.1., – Drive Train Level 2, Induction System
“All inducted air must pass through the venturi(s) of the car’s carburetor(s). Carburetor jets, jet needles,
metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables,
wires, or hoses can be removed. The number of carburetors must not be changed from stock, unless
otherwise specified by the vehicles spec line. All single carbureted cars may fit a permitted optional
carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is specified, a permitted optional
carburetor may be substituted. Permitted optional carburetors are:
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1. Weber 32 DGV/DGAV/DGEV
2. Weber 32/36 DGV/DGAV/DGEV
3. Weber 32/36 DFV/DFAV/DFEV
4. Weber 34 DAT/DATR/DATRA/DMTR
5. Holley-Weber 5200.The stock or permitted alternate carburetor must not be modified. Carburetor jets, jet needles,metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables,wires, or hoses can be removed. The number of carburetors must not be changed from stock.
Where Weber carburetors are specified, a permitted Weber type carburetor can be substituted.
Permitted Weber type carburetors are:
A specification table follows in the original; it is not shown here.