3.4 engine block rod caps

Asked by Sep 05, 2016 at 04:52 PM about the 2003 Chevrolet Impala

Question type: General

Put crankshaft put
pistons in main
bearings on torqued
to specification rod
bearing on torqued to
specification not can
not turn the

1 Answer


If you can not turn the crankshaft with a wrench after replacing the parts something is seriously wrong. Did you measure or "plastigauge" any of the crank bearings and journals prior to assembly? You may have the wrong bearings. Did you check the end gap on the piston rings prior to installation? Did you try turning the crankshaft before installing the cylinder heads?

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