horsepower 400HP @ Crankshaft WOT Operating Range 5600-6000 RPM Engine Configuration GM Small Block V-8 Displacement 383 CID / 6.3L Bore 4.030" Stroke 3.750" Compression Ratio 9.6:1 Idle Speed 700 RPM Gasoline 91 Octane Minimum Engine Oil MerCruiser 25W40 Syn Blend Spark Plugs AC-MR43T

More Videos...

6.2L LSA Engine Install & Lake Test
6.2L LSA Marine Power engine w/ Bravo III XR outdrive lake test. Engine was installed at Michigan Motorz. Exhaust was run THRU-PROP, not thru-hull to reduce Exhaust noise. Many components that were installed are special/custom to make the 6.2L LSA work in a stern-drive application.

Marine Power Marine Engine 8.1L MPI Inboard
8.1L 450HP marine engine 2008

Mercruiser 383 Stroker marine engine
MerCruiser 383 Marine Engine

6.3L MerCruiser 383 MAG MPI 350 HP Engine Installation
Michigan Motorz Customer Boat Engine Installation Project Specifications: Boat: 21' SeaRay Original Engine: 5.7L 260HP MerCruiser Carbureted Original Outdrive: Alpha 1 w/ 3 Blade Aluminum Prop Original Top Speed: Around 40 MPH New Engine: 6.3L 383 MAG 350HP MerCruiser Multi-Port Injection New Outdrive: Bravo I w/ 4 Blade Stainless Steel New Top Speed: Over 60 (Speedometer Pegs Out!) Check us out!