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  #6 (permalink)  
Old 04-23-2004, 09:40 AM
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Join Date: Nov 2003
Location: Los Angeles, CA
Cobra Make, Engine: ERA 377 - 428SCJ
Posts: 192
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Default Differential change
Something is not computing, and maybe its my speedo gear.
At indicated 80 mph I am turning +/- 4000/4100
Rear tires are Yoko 295/50/15, I think about 26.5 Dia.

I have been told that with 3.31's I should be turning about 31-3200 rpm @ 75-80 mph

I don't want to give up the top loader, just slow the engine down a bit at cruise speed
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Terry
Encino CA
ERA 377
428SCJ
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