1968 Firebird The Pontiac Firebird underwent minor changes for its second year. On the exterior, it lost its side vent windows and gained fender marker lights. The interior was revised and the rear suspension was refined with the adoption of staggered shocks in the rear (one in front of the rear axle and one behind) and the use of new multi-leaf rear springs. The big news was under the hood. The standard 400 Engine gained 5 bhp to 330 while the Ram Air Engine was rated at 335 bhp. In mid year, it was replaced by the 340 bhp Ram Air II. Newly available was a third 400 V8, named the HO (High Output) that was slotted between the two other engines. The 400 HO cam with free-flow exhausts and its own revised cam (when mated to the four speed manual). It too was rated at 335 bhp. On the lower side of the model line, the 230 I6 was replaced by a new 250 I6 and the 326 V8s were replaced by new 350 V8s. Performance was definitely the key at Pontiac. Production: Hardtop Coupe: 90,152 Convertible: 16,960    Click on year below for more info   1967 Firebird     1968 Firebird     1969 Firebird   Production: Firebirds Hardtop:      67,032 Convertible: 15,528 Production: Firebirds Hardtop:     90,152 Convertible: 16,960 Production: Firebirds Hardtop:     74,673 Convertible: 11,641 Engine Production: OHC-6=17,664 326 V8=46,196 400 V8=18,635 400 Ram Air=65 Totals:82,560 Engine Production: OHC-6=18,494 350 V8=67,282 400 V8=18,714 400 Ram Air=413 400 Ram Air II=110 Totals:107,112 Engine Production: OHC-6=20,893 350 V8=52,930 400 V8=11,522 400 Ram Air III=1,509 400 Ram Air IV=157 Totals:82,560    1968 Firebird 400 Convertible   1968 Firebird Hardtop   1968 Firebird 400 Hardtop 1968 Firebird 350 Hardtop   1968 Firebird 400 Ram Air Hardtop   1968 Firebird 350 Hardtop 1968 Firebird 350 Convertible 1968 Firebird 350 Convertible 1968 Firebird 350 Convertible 1968 Firebird 350 Convertible 1968 Firebird 400 Convertible 1968 Firebird 400 1968 Firebird 400 Convertible 1968 Firebird 400 1968 Firebird 350 Hardtop 1968 Firebird 400 Convertible 1968 Firebird 350 Convertible 1968 Firebird 400 Convertible 1968 Firebird 350 Convertible 1968 Firebird 350 1968 Firebird 350 Convertible 1968 Firebird 350 HO Clone 1968 Firebird 350