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Title: speedo gear and ratio Post by: bjauto on March 27, 2007, 02:35:09 AM hi all as been new to this game, i need help to work out my speedo gear!i have a 253 v8 motor and behind that i fitted a m20 Holden box 4 speed (one toner box) and my diff ratio is 2.78 and i'm running on 225/50/14 tyres ;what is the right speedo gear colour for this!!! i think the diff i fitted was for autos? allso my running combo will this be suitable or is the diff to tall at 1/1. ???
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