This is a Circle Track/Race only/NOT street legal Crate engine by Tuff Dawg Engines. Previously dyno tested engine made 493hp @ 5500rpm and 567ft lbs of torque @ 4000rpm. Must run race gas.

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

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

More special features of this engine include:

• Seasoned 4-bolt main block (splayed caps) with ARP main studs for added strength
• New Special circle track grind solid lifter flat tappet cam
• New RHS/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 Full roller rocker arms
• New Hardened racing bearings to match crankshaft
• New Total Seal rings
• New Double row timing set
• New High volume oil pump with big pickup screen and steel drive shaft and steel guide
• New Brass expansion plugs
• New Edelbrock Victor Jr aluminum intake manifold
• High torque mini starter required (not included)
• All parts are painted separately before assembly for that show quality look

This engine comes completely assembled with 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.