Crossram Intake

[69biscayne]

This is some verbage from a Mecum auction for a 68 Z28 last year.

It has the same casting # as yours.

Camaros racing in the 1967 Trans Am series ran with single 4-barrel carburetion, but when the SCCA changed the rules to allow “not more than two four barrel carburetors” Chevrolet engineers began to develop their own dual carburetion system for Trans Am homologation. The result was the now-famous Dual Cross Ram intake system, an early prototype of which graces the engine compartment of this award-winning 1968 Camaro RS Z28. Bearing casting number 0-310512, this unit was produced in December 1967 during a flurry of development work led by GM development engineer Jerry Thompson.