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Engine Compression

COMPRESSION SPECIFICATIONS

Application Compression Ratio
4.3L
VIN W & Z 9.05:1
VIN Z Turbo 9.3:1
5.0L (VIN H) 9.1:1
5.7L (VIN K) (1) 9.1:1
7.4L (VIN N) 7.9:1
(1) Compression ratio is 8.3:1 for vehicles with GVW greater than 8500 lbs.
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