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Old 04-20-2020, 11:56 AM   #7
SeventyOne
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Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,370
Re: My speedometer is now accurate

Quote:
Originally Posted by DeadheadNM View Post
Absolutely!!

I needed about a 13% bump in speed at the speedo. This box has a ratio of about 1.13. Cost $108 with shipping and I got a pen from the business too. Most of you probably are aware but these K5s had a ratio adapter as standard from GM. I had a stock 1.3 or so adapter lying around and that turned out to be exactly what I needed for my k20.
On that note do you know if all the stock K5 adapters were the same ratio?
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