BluePrint Engines GM 350 C.I.D. 390 HP Long Block crate engines deliver 390 hp and 410 lbs.-ft. of torque. They feature aluminum heads, hydraulic roller cam, cast iron crankshaft, hypereutectic pistons, and a compression ratio of 9.2:1. Additional specifications include:

* BLOCK:
NEW BluePrint Cast Iron Block
Manufactured and Machined in the USA
4-Bolt Main
4.000 in. Bore
1-Piece Rear Main Seal
Mech fuel pump provision: Yes
Passenger Side Dipstick
Drilled and tapped for clutch linkage

* ROTATING ASSEMBLY:
Cast Iron Crankshaft
3.480 in. Stroke
Forged 5.700 in. connecting rods
Hypereutectic pistons
Internal Front/ External Rear engine balance

* CYLINDER HEADS:
BluePrint Aluminum Cylinder Heads
64cc chamber
2.02 in. intake/1.60 in. exhaust valves
195cc intake/75cc exhaust runners

* CAM SPECS:
Cam Type: Roller
.495 Intake .502 Exhaust
220 Intake / 224 Exhaust duration
@ .050 - 114 degree lobe separation

* IGNITION TIMING:
32 Degrees Total at 3,500 rpm

* ALSO INCLUDES:
Valve covers
Oil pan
Timing cover
Dyno test results shipped with engine
30 month / 50,000 mile warranty!!!