This MABBCO® MARINE Remanufactured Long Block is intended for a Reverse Rotation GM Chevy 7.4 454 motor, model years 1970-1990. This long block is identifiable by its 2pc. rear main seal, 4-bolt main, oval intake port cylinder heads, and Gear-to-Gear timing set. Each MABBCO® long block is custom assembled as ordered so please call for current build times. MABBCO® MARINE long blocks include NEW pistons, rings, rod bearings, main bearings, cam bearings, timing set, gasket set (with Marine Cylinder Head gaskets), oil pump, lifters, and brass freeze plugs. MABBCO® long blocks are sold outright (No Core Return Required). Prior to shipment, all MABBCO® MARINE long blocks are SpinTested on a Computerized Engine test stand for proper oil pressure and compression and come complete with the push rods and rocker arms installed and pre-set.
Please note, the year model of your engine may differ from the year model of your boat, for assistnace with engine identification, please give us a call at 903-597-2441.
Looking for more performance? Call for performance upgrades, us as, HP marine camshafts, double row timing sets, HV oil pumps, and flattop pistons.
MABBCO® Remanufactured Long Blocks carry a 90 day Product Only Limited Warranty (No Labor or Shipping Allowance). Call or see Limited Warranty for details.