BluePrint Engines Marine GM 383 C.I.D. 405 HP Base Stroker Long Block Engines with Cast Components

Do you need a replacement engine for your boat? Try one of these BluePrint Engines marine GM 383 c.i.d. 405 hp stoker long block crate engines to get the job done. They feature quality-built components designed for marine use. BluePrint engines are built for speed on the open water, performance, and reliability, all in one package.

Block:

* 4-bolt main block
* Passenger side dipstick
* Square and parallel decked
* Align-honed main bearing bore
* Cylinders honed on computer-controlled machine to within .0002 in. straightness and roundness
* Cylinders are sonic tested for thickness

Rotating assembly:

* SCAT cast iron crankshaft
* Keith Black hypereutectic pistons
* GM heavy beam connecting rods
* Hastings moly rings
* Balanced rotating assembly
* Melling high-volume oil pump
* COMP Cams roller lifter camshaft
* Heavy-duty double roller timing set

Cylinder heads:

* Cast iron Vortec heads
* Hardened retainers and springs
* 2.02 in. swirl-polished intake valves
* 1.60 in. swirl-polished exhaust valves
* Hardened pushrods
* Brezinski cast iron marine intake manifold
* 9.5 to 1 compression
* BluePrint Signature Series polished aluminum valve covers
* Rubber coated steel oil pan
* Chrome timing chain cover
* Long slot rocker arms with positive locking nuts
* Dyno-tested--and shipped with results Show Less