Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1987CAPRICE CLASSIC, 4D WAGONREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL5.0L (307") V8 - VINS [Q,Y,9]ENGINE SPECIFICATIONSVALVE SPRING SPECIFICATIONS
1987 Chevrolet Caprice Classic, 4D Wagon
Valve Spring Specifications
1987 Chevrolet Caprice Classic, 4D WagonSECTION Valve Spring Specifications
VALVE SPRING SPECIFICATIONS
| Application | In. (mm) | ||||
|---|---|---|---|---|---|
| VIN Y | |||||
| Free Length | 1.96 (49.8) | ||||
| Pressure (1) | |||||
| Valve Closed | 76-84 @ 1.67 (34-38 @ 42) | ||||
| Valve Open | 180-194 @ 1.27 (81-88 @ 32) | ||||
| VIN 9 Or Q | |||||
| Free Length | 2.09 (53.10) | ||||
| Pressure (1) | |||||
| Valve Closed | 85-95 @ 1.67 (38-43 @ 42) | ||||
| Valve Open | 203-217 @ 1.22 (92-98 @ 31) | ||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.