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 MANUALSCHEVROLET1988R 20 P/U 2WD V8-454 7.4LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSAUTOMATIC TRANSMISSION/TRANSAXLESYSTEM SPECIFICATIONS
1988 Chevrolet R 20 P/U 2WD V8-454 7.4L
System Specifications
1988 Chevrolet R 20 P/U 2WD V8-454 7.4LSECTION System Specifications
FASTENER TORQUE SPECIFICATIONS
Shift Linkage 25 Nm (19 lbs. ft.)
Shift Lever to Transmission 27 Nm (20 lbs. ft.)
TV Cable 10 Nm (7 lbs. ft.)
Cooler Lines to Transmission 22 Nm (16 lbs. ft.)
Cooler Lines to Radiator 27 Nm (20 lbs. ft.)
Transmission Support Braces:
To Engine Mount (Nut) 70 Nm (52 lbs. ft.)
To Transmission 55 Nm (40 lbs. ft.)
Vehicle Speed Sensor Screw 11 Nm (8 lbs. ft.)
Converter Housing Cover:
With 4.3L Engine 10 Nm (7 lbs. ft.)
Without 4.3L Engine 35 Nm (25 lbs. ft.)
Transmission to Engine 47 Nm (34.5 lbs. ft.)
Converter to Flywheel 65 Nm (50 lbs. ft.)
Flywheel to Crankshaft Bolts 90 Nm (65 lbs. ft.)
RENDER: 1.0x
NO RELATED
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Use the Manual With the Right Hardware
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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.