Powerpak Pistons Kit, Small Block 400 Chevy Flat Top, 374, 4.125bore, 3.750" 6.000rod, 1.125c/h SBC, Forged

Forged Chevy 400 Stroker Pistons, Mahle PowerPak Pistons and Rings Kits - 4.125" Bore 

Mahle PowerPak Forged pistons and rings kits include forged pistons, low-drag rings, steel pins, and wire locks—all in one race-proven package. The pistons are hand-deburred and then coated with dry phosphate to protect against ring micro-welding and pin galling during initial startup. Mahle added its proprietary Grafal anti-friction coating to the piston skirts for additional performance and reliability. 

Piston Rings Included:  Yes

Bore (in.):  4.125 in.

Bore (mm):  104.775mm

Stroke:  3.500 in.

Engine Stroke Type:  Stock/Stroked

Actual Engine Displacement:  6.1L/372

Rod Length:  6.125 in.

Piston Style:  Flat top, with two valve reliefs

Piston Material:  Forged aluminum

Compression Height (in.):   1.125 in.

Piston Head Volume (cc):  +5.00cc

Wrist Pin Style:  Floating

Wrist Pin Retainers Included:  Yes

Wrist Pin Included:  Yes

Pin Diameter (in.):  0.927 in.

Piston Ring Thickness:  1.00mm x 1.00mm x 2.00mm

File Fit:  Yes

Gapless:  No

Top Ring Thickness:  1.0mm

Top Ring Material:  Steel

Top Ring Facing Material:  HV385 Thermal

Second Ring Thickness:  1.0mm

Second Ring Material:  Steel

Second Ring Facing Material:   Phosphate coated

Oil Ring Thickness:   2.0mm

Oil Ring Material:   Chrome plated stainless steel

Oil Ring Tension:   Standard

Quantity:  Sold as a set of 8.

Mahle Pistons