Pair of 1969-1970 Chevy Corvette Camaro Chevelle Nova cylinder heads. Casting number 3927186. Casting date B/11/0. February 11th 1970. These were used on all horsepower 4 bbl engines. These heads have 1.94"/1.50" valves. Special high performance engines came with 2.02/1.60" valves. These 1.94 heads can be opened to accommodate the larger 2.02 intake valves the same way done by the factory. When you do this you have a fresh seat and the valve will sit back up to where it did when new. These heads were rebuilt, however I didn't have the work done so I recommend disassembly and inspection.
