Fits GM 2G carbs with 1 .438 Bores. ( About 1 7/16" ) Bolt pattern 1.87 x 3.25". Please check before buying Includes Studs, flanged lock nuts and 2 gaskets made from Quality Felpro material .5" Tall Check our other listings for a 2" 1.5" or 1." version Insulates carb from engine heat to stop vapor lock for better starting and drivability Longer runners make more power. Every one is inspected and surfaced on both sides before shipping Includes high quality gaskets made from felpro material.
