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Chevrolet big-block, 24′ high compression Pro-Series

Multiple options
Item number: 91118


Not Recommended for nitrous or boosted applications. Image is a representation of this item. Actual item may vary.



Complete set of pistons, lock removal indents, oil support rails, vertical gas porting & 2ND land accumulator groove.



Piston top type: dome top.
Bore: 4.560".
Stroke: 4.000" to 4.500".
Rod Length: 6.385" & 6.535"
Compression height: 1.057" to 1.270".
Compression ratio (109.00): 14.65 to 16.74.
Compression ratio (118.00): 14.31 to 16.35.
Compression ratio (124.00): 13.99 to 15.98.
Dome volume: 50.00.
Dome height: .600".
Gram weight: N/A.
Rings: .043", .043", 3.0mm.
Ring set: CRG4327.
Rings included: no.
Oil rail spacer: ORS-450.
Pin type: 5115 straight wall.
Pin diameter: .990".
Pin length: 2.750".
Pin wall: .150".
Pin weight: 135 grams.
Pin buttons: not included.
Block height: 9.800".
Top land: .260".
Second land: .130".
Oil land: .075".
Deck thickness: .170".
Intake cutter: 2.400".
Exhaust cutter: slant.
Intake depth: .320".
Exhaust depth: .080" & up.
Note: coating options available.