New GM V8 5.7L Engine Block (1987-1995) RECGM350PREVORTEC

MERCRUISER Long Block V8 5.7L New (1987-1995)

Engine with flat tappets

Block number 526, type MJ

Cylinder heads numbers *193, *083, *217

Engine comprising engine block, cylinder heads, crankshaft, connecting rods, pistons, rings, engine bearings, oil pump, marine seals, marine camshaft, tappets, timing components, brass core plugs, complete head assemblies, timing cover, oil sump, marine circulating water pump.

One-year limited warranty.

• High-end components
• 100% brass core plugs
• Large-volume oil pump
• Marine valve springs resistant to fatigue
• Super-polished crankshafts using superior materials and design features
• Robust cylinder head and block castings
• Resistant to corrosion and cracking
• Higher load capacity
• Possibility of using a heavy-duty engine
• Hardened valve seat inserts in cylinder heads
• Hardened intake and exhaust seat inserts
• Premium alloy seat material
• Black-X valve technology
• Intake valve base material 21N
• Exhaust valve base material 24N
• Plasma nitride prevents valve seizing and increases toughness
• Chrome- Cobalt alloy seats resist corrosion caused by alcohol-based gasolines.
• Valve life improved from 42% to 100%. Advanced SIM tests.
• 100% pressure testing of water and oil passages.
• Progressive rotation tests with hot oil validate all oil passages, bearings and assembly. Valve clearance tightness and integrity
• Rinsing the oil at the end of the test eliminates break-in debris
• Shipped without oil to avoid spillage during transportation

Parts that will need to be transferred or purchased separately:

• Balancer
• Flywheel
• Spark plugs
• Distributor
• Water pump
• Exhaust manifolds and elbows

Caution: For a new or reconditioned engine block to function properly, the exhaust manifolds and elbows must be changed. This operation is a condition of the warranty.

Reference: 8M0182234, 8M0187370