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 MANUALSCHEVROLET1989BLAZER FULL SIZE V8-350 5.7LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYCRANKSHAFT, ENGINE
1989 Chevrolet Blazer Full Size V8-350 5.7L
Crankshaft, Engine
1989 Chevrolet Blazer Full Size V8-350 5.7LSECTION Crankshaft, Engine
Main Journal
Diameter
#1 2.4484"-2.4493"
#2, 3, and 4 2.4481"-2.4490"
#5 2.4479"-2.4488"
Taper
Production 0.0002" (Maximum)
Service Limit 0.001" (Maximum)
Out of Round
Production 0.0002" (Maximum)
Service Limit 0.001" (Maximum)
Main Bearing Clearance
Production
#1 0.0008"-0.0020"
#2, 3, and 4 0.0011"-0.0023"
#5 0.0017"-0.0032"
Service Limit
#1 0.0010"-0.0015"
#2, 3, and 4 0.0010"-0.0025"
#5 0.0025"-0.0035"
Crankshaft End Play 0.002"-0.006"
Thrust Bearing Clearance 0.002"-0.006"
Connecting Rod Journal
Diameter 2.0988"-2.0998"
Taper
Production 0.0005" (Maximum)
Service Limit 0.001" (Maximum)
Out of Round
Production 0.0005" (Maximum)
Service Limit 0.001" (Maximum)
Connecting Rod Bearing Clearance
Production 0.0013"-0.0035"
Service Limit 0.003" (Maximum)
Connecting Rod Side Clearance 0.006"-0.014"
RENDER: 1.0x
NO RELATED
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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.