* Hydraulic roller lifters: These were used in the L98 350 cubic inch (5.7L) Tuned Port Injection (TPI) engine. This was the more powerful and sophisticated engine option.
* Hydraulic flat tappet lifters: These were used in the smaller displacement small-block V8 engines offered that year (though exact displacement may vary slightly depending on the exact model spec). These were a less advanced lifter type than the roller lifters.
