An LS truck water pump (2005 6.0L LQ4 GM PN 12703898 shown, left) is about 1-9/16 inches longer than a typical short Corvette pump (LS2/LS3/LS7 GM PN 12681186, right).

The LS1, LS6, and truck manifolds interchange, but the truck manifold is pretty tall so it might pose a hood-clearance issue. ... Tru Trac solves this problem because you get the water pump ...

IMCO offering PowerFlow LS Manifolds for marine use. They may not be new introductions at this year’s Miami International Boat Show, but for fans of the GM LS engines, IMCO Marine of California and ...