The balanced rotating assembly (typically includes crankshaft, pistons, rings, connecting rods, rod bearings, and balancer) featured in this engine:

• 3.980" stroke nodular iron crank
• 6.488" big beam forged rods with ARP rod bolts
• 10 to 1 compression pistons

More special features of this engine include:

• Seasoned 2-bolt main block. This is a 390 block that has been sonic tested and bored out to a 428
• New Hydraulic flat tappet cam with .562"Int/.565"Exh valve lift
• New Edelbrock Aluminum Heads made from A356 aluminum that are 18lbs lighter than the cast iron heads with 2.090"Int/1.650"Exh swirl polished stainless 1-pc valves with undercut stems for improved flow
• These Edelbrock Aluminum heads come with both 8-bolt and 16-bolt "CJ" exhaust bolt patterns. (Note: These heads DO NOT come with the 14-bolt "GT" exhaust bolt pattern)
• New Hardened exhaust seats for use with leaded or unleaded fuel
• New 1.440" high performance springs set up to match cam
• New Bronze valve guides for better oil retention
• New Perfect Circle rings
• New Double row timing set
• New High volume oil pump with steel drive shaft and bolt on oil pickup tube
• New Brass expansion plugs
• New Edelbrock Performer RPM aluminum intake manifold. This dual plane intake constant cross-sectional area design builds low end and mid-range acceleration while optimized runner path make top-end hp
• For those of you that have the hood clearance we will include a 2" high intake to carb spacer to increase plenum volume. This spacer increases the carb-to-plenum floor distance which atomizes the fuel better and also enhances low-rpm torque and throttle response. This engine takes a square bore carb. It works best with a 750cfm carb (not included)
• All parts are painted separately before assembly for that show quality look

This engine comes completely assembled with oil pan, timing cover, harmonic balancer, valve covers, and intake manifold.

This engine is custom built from start to finish in our state of the art facility by professionals that take pride in their work to guarantee that you get a top quality engine the first time!.