
02-11-2016, 04:51 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
The trick to telling the difference is to stand with your butt facing the engine. This allows the vibrations to hit the back of your ear flaps, as opposed to entering directly in to the canal. When done this way, the distinction is readily apparent to the trained ear. 
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