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Ross 2618 Forged Pistons
Utilizing some of the most sophisticated design and analysis software along with ultra-modern CNC machining centers available for manufacturing and a very wide range of forgings. Ross maintains exacting tolerance on pistons for practically all engines.
2618-T61 Aluminum Forgings
CNC diamond turned skirts
Radius domes and valve reliefs (oversized to handle oversize valves)
Machined side reliefs
Forced pin oilers
Second land pressure reservoir
Annular pin oiler grooves which intersect the forced pin oilers
1/16, 1/16, 3/16 ring grooves
Aircraft quality pins
Double spiro locks
Part Type: Pistons
Model: 2618 Forged Pistons
Application: Chevrolet Small Block V8 400
Piston Style: 23 Degree Dome Top
Cylinder Bore: 4.155”
Compression Distance: 1.245”
Crankshaft Stroke/Rod Length: 3.480" with 6.000" Connecting Rod (377ci)
Deck Height (Zero Deck): 9.025”
Dome Volume: 11cc
Compression Ratio: 3.480" Stroke w/58cc Heads: 13.9
Compression Ratio: 3.480" Stroke w/64cc Heads: 12.7
Compression Ratio: 3.480" Stroke w/76cc Heads: 10.9
Piston Material: Forged 2618-T61 Aluminum
Intake Valve Relief Depth: N/A
Intake Valve Relief Diameter: N/A
Exhaust Valve Relief Depth: N/A
Exhaust Valve Relief Diameter: N/A
Accumulator Groves: Yes
Forced Pin Oilers: Yes
Gas Ports: No
Skirt Coating: CNC Diamond Turned Skirts
Lock Removal Indents: No
Average Piston Weight: 500g
Pin Type: 5115 Straight Wall
Wrist Pins Included: Yes
Wrist Pin Size: 0.927" x 2.500”
Average Wrist Pin Weight: 141g
Pin Lock Included: Double Spiro Locks
Ring Grove Sizes: 1/16”, 1/16”, 3/16”
Piston Rings Included: No
Manufacturer: Ross Racing Pistons
Manufacturer's Part Number: 91471
Weight: 12.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Sets of 8
Note: Oil rail supports included. Nitrous up to 250HP.
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