14" 400 Muscle Car Style Chrome Steel Air Cleaner Top Ford or 385-series big block engines

or 385-series big block engines — those require a different distributor

as well as TSP's fabricated high-capacity pans

The air-gap plenum isolates the intake runners from engine heat by creating an air space beneath the manifold

allowing the timing curve to be tuned for carbureted street or performance driving on the Y-Block Thunderbird specifically

A compatible press-fit pulley and press-fit installation tool are required — the smooth shaft is not compatible with screw-on hub pulleys or keyed-shaft pulley designs

14" 400 Muscle Car Style Chrome Steel Air Cleaner Top Ford or 385-series big block enginesDesigned for 14" round air cleaner assemblies, this top helps complete the air cleaner housing with a clean chrome appearance and serviceable fitment. Airflow & Filtration Performance The high dome "classic performance" top style with "400 High Performance" detail helps finish the air cleaner assembly while maintaining access for filter service. Construction & Engine Bay Finish Steel construction with a chrome finish supports long term engine bay