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Old 12-27-2012, 08:52 PM
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.. Hot Rod mag. said they changed the stock head gasket on their 2002 HT383 to a steel shim and bumped the compression ratio from 9.1 up to 9.6... they didn't mention the thickness of either gasket... they did say 18cc piston dish, .026" in the hole... I also read somewhere's there was a change made to the pistons (& head gaskets?) later... their engine was rated 325HP and 415 lb.-ft., but they got a baseline dyno of 338HP 444 lb.-ft., almost identical to the current ratings of 340HP 435 or 440 lb.-ft. (don't know why torque different at different sources)
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