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Home >> GMC >> 1997 >> Forward Control 7.4 J >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Controls - Specifications - 3.1L) >> Mechanical Checks >> Engine Compression
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Engine Compression

WARNING: This page is about a different car, the 1995 Pontiac Trans Sport and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.
COMPRESSION RATIO

Application Compression Ratio
3.1L (VIN D) 8.5:1
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