This manifold will fit a 6-71 thru 14-71 blower and is designed for the 4.8, 5.4, 5.7, 6.0, and 7.0 liter engines and includes a spring loaded pop off valve in case of backfires. Manifold is 6.50" tall with ports that measure 2.625" x 1.250". Manifold has unmachined bungs on each port if a racer wants to install EFI injectors or port nozzles for mechanical injection.
Manifold as seen in the pictures weights twenty nine pounds. Blower mounting surface is O-ringed to give the blower to manifold a superior seal and the floor of the intake is tented so there is better fuel distribution.