Cast-Iron Vortec Cylinder Head Assembly

Cast-Iron Vortec Cylinder Head Assembly

SKU:
G12691728
£764.87
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Special order from USA - ETA to arrive is 8-10 weeks. If you require an express air-freight please contact us for a quote.

Description
  • Completely assembled with 1.940"/1.500" valves
  • Uses bare head 12691727
  • 62cc combustion chamber
  • Straight spark plugs
  • No heat risers
  • Requires Vortec-specific intake manifold
  • Camshafts with more than .475" lift require machining valve guide bosses and checking valve seal to valve spring retainer clearance
  • Can be machined for 2.020"/1.600" valves
  • Rocker arm studs can be pinned or drilled and tapped to 3/8"
  • Valve spring seat diameter is 1.280"
  • Casting number 10239906 or 12558062