SRE R+R "as cast"aluminium cylinderheads, small-block Chevrolet, straight plug.

Item number: SRE-42001-HF

SRE R+R (Road + Racing) cylinder heads are fully assembled, machined & tested in the Netherlands. We only use parts that we support for a 100% and we machine/assemble the cylinder heads, if desired, completely to your specifications!

As cast:
As cast, R+R cylinder heads are a real upgrade for your street/strip engine. Available for use with hydraulic flat tapped or hydraulic roller camshafts. These "as cast" R+R cylinder heads deliver, just out of the box, excellent performance over a wide RPM range.



  • Aluminum A356 casting.
  • 64cc, heart shaped combustion chambers.
  • 2.02" stainless steel, swirl polished, +.100" intake valve.
  • 1.60" stainless steel, swirl polished, +.100" exhaust valve.
  • 200cc intake runner.
  • 76cc exhaust runner.
  • 3- angle, ductile iron seats (Not suitable for LPG. Can be made LPG ready at an additional cost). 
  • Valve springs (Howards or equivalent).
  • Hardened chrome moly or titanium 10° retainers.
  • Hardened 10° valve lock's. 
  • Bronze valve guides for 11/32" valves.
  • High-temp Viton valve seals.
  • Hardened steel rocker studs.
  • Hardened guide plates (in combination with hardened push rods).
  • Bare or assembled to specifications.
  • Sold as pair.