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

• 3.250" stroke steel crank
• 5.400" rods with ARP rod bolts
• 10 to 1 compression forged pistons

More special features of this engine include:

• Seasoned roller cam block that has been vatted, magnafluxed for cracks, thermal cleaned and steelabrated, bored, honed and plateau honed to fit new flat top forged oversized pistons
• Deck head gasket surface on block to ensure a good long lasting seal
• There are many different piston, rod, and stroke combinations on the market today for the 331 and 347 Ford engines. Our combination has the longest rod length possible allowing the best rod angle in the market. The longer rod allows the piston to dwell longer at the top and bottom of the cylinder for a greater fuel/air charge. The forged piston we use is designed with the rings close to the top of the piston, allowing less gasses to get trapped in between the piston and cylinder wall minimizing detonation by allowing a cleaner, hotter burn. This is simply not possible with many of the other combinations available today. The oil ring on our engine does not intersect into the wrist pin making it a more reliable, stronger ring having less chance to flex and use oil like many other widely used combinations. We have seen many engines using these other combinations that have failed prematurely due to the poor oil ring land design that shortens engine life. So before you build or buy a stroker motor, do your homework, we have!
• New Hydraulic roller cam with .555"Int/.565"Exh valve lift (This engine uses the Ford 5.0GT/351W firing order)
• High quality racing performance heads are 356A Aluminum cast with thicker deck surface for improved sealing
• This set of heads weighs 50lbs less than the cast iron head
• 75cc Exhaust ports that are deburred and polished
• 60cc Combustion chambers
• New 2.020"Int/1.600"Exh stainless valves with undercut stems to improve flow
• Heads have 3-angle valve job
• New Hardened exhaust seats for use with leaded or unleaded fuel
• New 1.440" high performance springs set up to match cam
• New Screw-in studs with guide plates
• New High temperature valve seals
• New Bronze valve guides
• New 1.6 roller tip rocker arms
• New Oversize forged flat top pistons and rings
• New Hardened push rods
• New Heavy duty double row timing set
• New High volume oil pump
• New Revolutionary 1-pc design molded rubber oil pan gasket with load limiters to prevent over-tightening and higher temperature resistance than standard cork-rubber gaskets
• New Brass expansion plugs
• New Hardened racing main and rod bearings with extra radius to fit 3.250" stroke crankshaft
• 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 (valve covers may be different than the ones pictured), and Edelbrock Performer II fuel injection upper and lower intake manifold.