Circle Track/Race only/NOT street legal. Previously dyno tested crate engine by Tuff Dawg Engines made 511hp @ 5500rpm and 614ft lbs of torque @ 4000rpm. Must run race gas.

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

• 3.750" stroke 4340 internally balanced crank. Use early 350 flywheel (not included)
• 6.0" forged I-beam rods with ARP rod bolts
• 13 to 1 compression forged lightweight flat top pistons

More special features of this engine include:

• Seasoned 4-bolt main block (splayed caps)
• New Solid lifter flat tappet cam
• New Pro Topline/Dart 50cc heads with 2.02"Int/1.600"Exh swirl polished stainless valves with undercut stems for better flow
• Hardened exhaust seats for use with race fuels
• New 1.440" High performance springs and 1.440" chrome moly retainers set up to match cam
• New High temperature valve seals
• New Bronze valve guides
• New Screw-in rocker studs with guide plates
• New Chrome moly push rods
• New Total Seal rings
• New Double row timing set
• New High volume oil pump with welded big pickup screen and steel drive shaft and steel guide
• 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
• All parts are painted separately before assembly for that show quality look

This engine comes completely assembled with 8-qt circle track oil pan, driver side chrome dipstick and tube, chrome timing cover, race-type harmonic balancer, circle track valve covers, and an Edelbrock Victor JR aluminum intake manifold.