Garden Tractor

FEATURES

• High tensile strength ductile iron material 
• Critical gasket, seal, bearing surfaces and bolt holes established (cylinder head, oil pan, cam cover, valve cover, etc)
• Stock K341 deck height (Pro Stock spec)
• Stock K341 head bolt pattern (Pro Stock spec)
• Stock K341 camshaft position (Pro Stock spec)
• 5/8" Lifter bores with bronze bushings installed at correct angles
• Valve guide positions established at correct angles 
• Pre-drilled for pressurized oil system ports
• Internal clearance for the largest lifters and highest lift cams
• Internal clearance for the connecting rod at the bore base
• 3.970" Rough bore over the crankshaft centerline
• Valve angles/positions as well as the head bolt patterns are optimized for pro stock
• Accepts stock points ignition

What you need todo

• Cut intake/exhaust port to the valve
• Drill and tap intake and exhaust manifold bolt patterns
• Install valve guides
• Cut valve job
• Bore and Hone

Priced & sold as pairs. Valve Stems included.