This is a reproduction of the New conditions letter that Pontiac circulated to all of their dealer mechanics in March 1957 about the introduction of the triple 2 barrel carburetor option. You will find detailed descriptions of how the Rochester triple-carb system works, step-by-step instructions for adjustment & overhaul, and specifications for both the standard & extra horsepower engines. You will also find articles on correct heater operation, product recalls, shift control adjustment procedures, and much more. Covers the tri-power available on the standard, 290 hp 347 c.i. engine, as well as the "extra horsepower" 317 hp engine. This is information you won't find in any manual, not even in the 1957 Pontiac shop manual. 16 pages, New condition! Buy now for this hard-to-find dealer info from Pontiac.
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