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Summit Racing SUM-152123 - Summit Racing® Cast Iron Cylinder Heads for Small Chevy

  • Cylinder Head, Cast Iron, Assembled, 72cc Chamber, 165cc Intake Runner, Chevy, 302, 327, 350, 400, Each
  • Application Specific
  • Estimated Ship Date: Today
 
BrandSummit Racing
Manufacturer's Part NumberSUM-152123
Part TypeCylinder Heads
Product LineSummit Racing® Cast Iron Cylinder Heads for Small Chevy
Summit Racing Part NumberSUM-152123
 
Cylinder Head StyleAssembled
Cylinder Head MaterialCast iron
Cylinder Head FinishNatural
Combustion Chamber Volume (cc)72
CNC-Machined Combustion ChamberNo
Intake Runner Volume (cc)165cc
CNC-Machined Intake RunnerNo
CNC-Machined Exhaust RunnerNo
Intake Port LocationStandard
Exhaust Port ShapeSquare
Exhaust Port LocationStandard
Spark Plug StyleStraight
Intake Valves IncludedYes
Intake Valve Diameter (in)2.020 in.
Exhaust Valves IncludedYes
Exhaust Valve Diameter (in)1.600 in.
Valve Springs IncludedYes
Maximum Valve Lift (in)0.520 in.
Outside Diameter of Outer Spring (in)1.250 in.
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Retainers IncludedYes
Retainer MaterialSteel
Locks IncludedYes
Lock Style7 degree
Valve Stem Seals IncludedYes
Valve Stem Seal StyleUmbrella
Rocker Arm Studs IncludedYes
Rocker Arm Nut Thread Size3/8-24 in.
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Guideplates IncludedNo
Valve Cover Mounting StyleCenter and perimeter bolt
Accessory Bolt Holes DrilledYes
Valve Guides IncludedYes
Valve Guide MaterialCast iron
Valve Seats MachinedYes
Valve Seat Machine Style3-angle
Valve Seat MaterialDuctile iron
Steam Holes DrilledNo
Oiling StyleThrough pushrod
Machined for O-RingNo
Heat CrossoverYes
QuantitySold individually.
NotesWill accommodate center bolt valve covers with minor modifications. Features ductile iron seats on exhaust ports only for use with unleaded gas. Machine work must be done to accommodate guideplates.
CalculatorCompression Calculator
 

Think you have to scour the local bone yards to find a decent set of GM's old double hump or fuelie cylinder head castings? Not true. In fact, we've brought back classic Chevy performance in a big way with these ready-to-run heads for small block Chevy. Our versions of the popular GM cylinder heads offer great performance for less than it would cost to rebuild an old set of double hump castings.

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