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The FAST LSXrt intake manifold for LS3 engines is a high-plenum design built for high-RPM, race-oriented LS3 and L92 rectangle-port heads. With a raised 102mm throttle body location and larger High HP runners, it increases plenum volume and optimizes airflow for wide-open-throttle power. FAST cites proven gains at high RPM over the LS3 Street Manifold, making it suited for all-out racing builds where top-end breathing is the priority.
FAST LSXRT Manifold LS3 102MM High HP Runner - Black
