Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Piston, Engine

Engine Liter/CID 4.3L/V6-262

All specifications given in inches.

Piston Diameter (Std.) [01] 3.9988-4.0008
Piston Clearance 0.0007-0.0017 [07]
Piston Pin Diameter (Std.) 0.9270-0.09273
Pin To Piston Bore Clearance [05] 0.0010
Piston Rings
End Gap [02]
Comp. [21]
Oil 0.015
Side Clearance
Comp. 0.0014-0.0032
Oil 0.0014-0.0032

[01] Measured at 90 deg. angle to piston pin.
[02] Minimum.
[05] Maximum.
[07] Service limit, 0.0027 inch.
[21] Top ring, 0.010 inch; second ring, 0.018 inch.