Holley 36-378 Carburetor Installation and Tuning DVD Virtual tour of 4160 vacuum secondary carburetor, 4150 vacuum and mechanical secondary, 4165 and 4175 spread bores Covers various throttle hook-ups, transmission kickdowns, chokes, quick start tuning initial settings and manifold compatibility Trouble shooting section to help with bogs, hesitations, cold and hot starting, flooding, missing and much more Glossary section of terms and tools for easy installation Warranty procedures and product registration section