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Pontiac Performance Pistons
Forged Pistons Pontiac 455ciBore: 4.181" (+.030") Flat Top with 4-Valve Reliefs (-6.7cc) Pressed Pin Ring Grooves: 5/64'', 1/16'', 3/16'' Set of 8
Compression Ratios
- 72cc - 11.51
- 87cc - 10.01
- 96cc - 9.3
- 111cc - 8.34
- 114cc - 8.17
Specification
- Duroshield skirt coated
- Piston Head Type: Flat, 4 reliefs
- Piston Head Volume: -6.7cc
- Pin Weight: 194 grams
- Piston Weight: 580 grams
- Piston and Pin Weight: 774 grams
- Pin Diameter: .980"
- Compression Distance: 1.497"
Speed-Pro developed powerforged pistons and set the pace in powerforged technology. The high silicon VMS-75 alloy is found exclusively in pistons "powerforged" by Speed-Pro. Up to 3,000 tons of force forges aluminum slugs into the basic piston form which creates a grain flow pattern in the structure providing excellent strength, ductility and improved heat dissipation.
Please Note: All compression ratios are figured with a gasket thickness representative of those commonly used and are approximate.
Part TypePiston
Product LineSpeed-Pro Powerforged Pontiac Pistons
BrandSEALED POWER
Package Height2.8
Package Width3.8
Package Length4.3
Weight1.75 PG
Part CategoryPerformance Parts
QuantitySet of 8
Vendor Part NumberL-2359NF 30
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
