6.2 c code and j code engine differences

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06-11-2012, 11:28 AM

corvetteguy

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6.2 c code and j code engine differences

I didn't see this question asked any where else so here it goes.

Is the only difference between the c code and j code 6.2's the intake manifold and the presence of egr on the motor?

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06-11-2012, 06:18 PM

2MuchJunk

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They also run different valve sizes in the head, injectors, injection pumps, and injector lines.

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06-11-2012, 07:59 PM

wildbill

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C code run coarse threaded injectors, J code runs fin threaded.

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06-13-2012, 07:46 AM

corvetteguy

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So if one wanted to convert their c code motor to a j code it would be a head swap, intake, injectors and nessesary equipment.

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06-13-2012, 05:19 PM

2MuchJunk

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The only heads that run a coarse injector are 82 all heads after that are fine thread. You could swap the heads but if you have a complete running 6.2 I wouldn't worry about it for the power gain you would get.

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