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

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

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!

More special features of this engine include:

• Brand New Block
• Brand New CompCams Hydraulic tappet cam with .541"Int/.544"Exh valve lift
• Brand New High quality ProComp 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
• Brand New 2.02"Int/1.600"Exh stainless valves with undercut stems to improve flow
• Heads have 3-angle valve job
• Brand New Hardened exhaust seats for use with leaded or unleaded fuel
• Brand New 1.440" high performance springs set up to match cam
• Brand New Screw-in studs with guide plates
• Brand New High temperature valve seals
• Brand New Bronze valve guides
• Brand New 1.6 full roller rocker arms
• Brand New Oversize forged flat top pistons and rings
• Brand New Hardened push rods
• Brand New Heavy duty double row timing set
• Brand New High volume oil pump
• Brand 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
• Brand New Expansion plugs
• Brand New Hardened racing main and rod bearings to fit 3.250" stroke crankshaft
• Brand New Edelbrock Air Gap dual plane aluminum intake manifold
• All parts are painted separately before assembly for that show quality look

This engine comes completely assembled with front sump oil pan, timing cover, harmonic balancer, valve covers, and Edelbrock Air Gap dual plane aluminum intake manifold.