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RHS Pro Elite SBC 23 Deg CNC Port Iron Cylinder Heads, Straight Plug
RHS Pro Elite SBC 23 Deg CNC Port Iron Cylinder Heads, Straight Plug

RHS Pro Elite SBC 23 Deg CNC Port Iron Cylinder Heads, Straight Plug

Assembled Cylinder Head Style, Cast Iron, Natural, 69cc Combustion Chamber Volume

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RHS Pro Elite SBC 23 Deg CNC Port Iron Cylinder Heads, Straight Plug
RHS Pro Elite SBC 23 Deg CNC Port Iron Cylinder Heads, Straight Plug
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Part # 5901236-RACE
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Details

Cylinder Head Style:
Assembled
Material Type:
Cast Iron
Finish:
Natural
Combustion Chamber Volume:
69cc
Intake Runner Volume:
228cc
Exhaust Runner Volume:
82cc
Combustion Chamber Volume Range:
60cc - 69cc
Intake Runner Volume Range:
220cc - 229cc
Exhaust Runner Volume Range:
80cc - 89cc
CNC-Machined Runners:
Yes
Spark Plug Style:
Straight
Intake Port Shape:
Rectangle
Exhaust Port Shape:
Square
Intake Valve Diameter:
2.060"
Exhaust Valve Diameter:
1.600"
Spring Diameter:
1.550"
Sold in Quantity:
Pair

Info

The RHS Pro Elite series of CNC-ported cylinder heads is designed for absolute maximum engine performance. Utilizing innovative design features, modern engineering methods & precision CNC machining, Pro Elite Cylinder Heads are second-to-none. Features a 69cc combustion chamber available bare or fully assembled.

  • Innovative cast iron design w/ race-inspired features
  • Delivers maximum airflow for remarkable performance gains
  • Extreme performance & race applications
Assembled Heads Feature:
  • 5/16" flat guide plates
  • 2.055" stainless intake valves, +.100"
  • 1.600" stainless exhaust valves, +.100"
  • Premium 11/32" heat treated steel 7° valve locks
  • 7/16" rocker arm studs
  • 1.550" O.D. roller cam valve springs
  • Lightweight steel retainers

RHS Cylinder Head Standard Features (Link)

Specs

  • 228 cc intake runners
  • 82 exhaust runners
  • 69 cc combustion chambers
  • Intake flows 311 cfm @ .700" lift
  • Rocker Studs:
    • Overall Length: 2.48"
    • Base of Nut to Top: 1.80"
    • Thread Length: .970"
  • Valve Springs:
    • OD: 1.550"
    • ID: .740"
    • Roller Cam Applications
    • Seat Pressure: 160# @ 1.968"
    • Open Pressure: 450# @ 1.270"
    • Solid Height: 1.200"

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • RHS CNC 228CC/69CC Head-St
    Qty x 2

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