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Home >> Chevrolet >> 2011 >> Impala LT >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Specifications >> Fastener Tightening Specifications
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Fastener Tightening Specifications

Application Specification
Metric English
Catalytic Converter Nut 60 N.m 44 lb ft
Exhaust Manifold Pipe to Catalytic Converter 35 N.m 26 lb ft
Exhaust Crossover Pipe Nut 25 N.m 18 lb ft
Exhaust Hanger Bracket Bolt 25 N.m 18 lb ft
Exhaust Manifold Bolt
  • First Pass
15 N.m 11 lb ft
  • Final Pass
20 N.m 15 lb ft
Exhaust Manifold Heat Shield Bolt (LS4) 9 N.m 80 lb in