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Correct RPM ranges? 200

uid 44629's pic
posted by  Luke H on  Fri May 23 18:58 CST 2008
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last visit: Fri Mar 20 10:54 CST 2009
[RELATED]

I've got the 3.31 rear end in my car with the M47.

I just installed this rather expensive 52mm tach tonight and I don't believe it's working correctly. The needle moves, idle is indicated as about 650 rpm? (it's rather small, so I'm just estimating.) The dummy shift-up light comes on at abou 1500rpm according to the tach.

60mph = 2,000 RPM 80mph = 2800 RPM

I don't buy it... Redlining this tach would kill my engine ;)

Or maybe it's right and I'm just not thinking clearly?

This is mine:



I notice that the needle is different than the other ones I had in the past:





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