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3.90 speedo


Guest Anonymous

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Guest Anonymous

is there a way to tell which speedos

are calibrated to 3.90? I'd like a 3.90 rear

in my '02 but i'd also like the speedo to be half correct.. I've got a 75 with a 3.64

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Guest Anonymous

back of the speedo unit itself. It'll have a number stamped on it after the letter "W" as in W=xxx. A 3.64 Speedo is W=1.27, but I don't remember the numbers for a 3.90 or a 4.11, but they aren't 1.27...

Mike

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Guest Anonymous

standard.jpg

for a 3.90 rear end w/o a 3.90 calibrated speedo. If you run a 3.90 diff with 15 inch wheels, a 4.10 speedo from a 1600 or an early 02 will read-out speed correctly. Builder of my Inka did the math and came up with this . Here is a picture of the "old" speedo in the 1972 dash. I like the look, appreciate the correct reading, and personally do not like the fake wood on the 76 dash panels. If you dont run 15s, then this will not help you, but it is an alternative to finding a 3.90 1976 speedo, which i understand are very hard to find.

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