I'd stay away from the narrow ring, the large bores in the 3.7 with a steel liner in an unsupported(no deck surface) aluminum cylinder tend to expand more than most engines(thats why I'd run the hyperutectic pistons for tighter clearance), I'd use the standard ring to keep it sealed, unless you are turning it at real high rpms, I don't think you'd gain anything
Last edited by spareparts; 06-27-2011 at 06:25 AM.
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