Pistons, Piston Pins & Piston Rings Specifications

PISTONS, PINS & RINGS

Application

In. (mm)

Pistons

Clearance ⁽¹⁾

-.0003-.0018 (-.008-.046)

Diameter

3.2L

3.6205-3.6221 (91.961-91.999)

3.5L

3.7780-3.7796 (95.961-95.999)

Pins

Diameter

.9448-.9449 (23.997-24.000)

Piston Fit

.0002-.0006 (.005-.015)

Rod Fit

.0003-.0007 (.008-.018)

Piston Ring No. 1

End Gap

.008-.014 (.20-.36)

Side Clearance

3.2L

.0016-.0031 (.041-.080)

3.5L

.0014-.0034 (.035-.085)

Piston Ring No. 2

End Gap

.009-.019 (.22-.49)

Side Clearance

3.2L

.0016-.0031 (.041-.080)

3.5L

.0014-.0034 (.035-.085)

Piston Ring No. 3 (Oil)

End Gap

.010-.030 (.25-.76)

Side Clearance

.0015-.0072 (.038-.184)

⁽¹⁾	Piston at skirt is elliptical and is coated with a solid lubricant. Measuring piston .39" (10 mm) above bottom of skirt and the combination of these design features may result in a negative bore-to-piston clearance.