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Pontiac Performance Pistons
Forged Piston Pontiac 400ciBore: 4.160" (+.040") Flat Top with 4-Valve Reliefs (-6.7cc) Pressed Pin Ring Grooves: 5/64'', 5/64'', 3/16'' 1/Pkg
Compression Ratios
- 72cc - 9.94
- 87cc - 8.7
- 96cc - 8.11
- 111cc - 7.3
- 114cc - 7.16
Specification
- Duroshield skirt coated
- Piston Head Type: Flat, 4 reliefs
- Piston Head Volume: -6.7cc
- Pin Weight: 194 grams
- Piston Weight: 589 grams
- Piston and Pin Weight: 783 grams
- Pin Diameter: .980"
- Compression Distance: 1.714"
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 Height4.5
Package Width4.5
Package Length4.8
Weight1.85 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
