The Mahle PowerPak pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks. They are also completely phosphate coated plus feature an anti-friction Grafal skirt coating. PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability.
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included. For 377 c.i. S/B Chevy (4.125" bore x 3.48" stroke).
- Comp Height 6.0" Rod: 1.250
- Pin Diameter: 0.927
- Clearance Guide
- *Meas. = 0.500
- Min = 0.0025
- Max = 0.0033
*The location to measure piston-to-wall clearance for each application. This point is calculated from the bottom of the piston skirt and indicates the widest part of the piston and thus where to measure.