Pistons, Pins & Rings Specifications

PISTONS, PINS & RINGS SPECIFICATIONS

Application ⁽¹⁾

In. (mm)

Piston Clearance ⁽²⁾

.0008-.0024 (.020-.060)

Piston Pin

Diameter

.90531-.90551 (22.995-23.000)

Fit-In-Piston

.00008-.00051 (.0020-.0130)

Fit-In-Rod (Clearance)

.00030-.00090 (.0076-.0229)

Rings

Ring No. 1

End Gap

.012-.022 (.305-.559)

Side Clearance

.0013-.0031 (.033-.079)

Ring No. 2

End Gap

.010-.025 (.254-.635)

Side Clearance

.0013-.0031 (.033-.079)

Ring No. 3

End Gap

.015-.055 (.381-1.397)

Side Clearance

.0011-.0081 (.028-.206)

Ring Groove Depth

Ring No. 1

0.181-0.186 (4.592-4.722)

Ring No. 2

0.173-0.178 (4.389-4.519)

Ring No. 3

0.164-0.169 (4.167-4.294)

Ring Width

Ring No. 1

0.0581-0.0589 (1.476-1.497)

Ring No. 2

0.0581-0.0589 (1.476-1.497)

Ring No. 3

0.1122-0.1182 (2.850-3.002)

⁽¹⁾	Specifications have been revised due to General Motors TSB 57-61-17, dated 05/18/1995.

⁽²⁾	Piston clearance measured at 2.047 INCHES (52mm) from top of piston.