4x4subieguy Posted April 21, 2010 Share Posted April 21, 2010 I have a couple EA81 Engines laying around and a EA71 in my GL. I see according to the manual that the bore is the same, but the stroke is different. So maybe the pistons are interchangeable? how about the heads? Can you swap EA81 heads onto the EA71 block? Link to comment Share on other sites More sharing options...
GeneralDisorder Posted April 21, 2010 Share Posted April 21, 2010 Pistons will interchange. Heads will not. EA81 pistons into an EA71 will lower your compression. EA71 pistons into an EA81 will raise the compression. GD Link to comment Share on other sites More sharing options...
4x4subieguy Posted May 8, 2010 Author Share Posted May 8, 2010 What if I swap the valves push rods and rocker arms? Link to comment Share on other sites More sharing options...
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