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Old 04-20-2020, 08:54 AM   #6
DeadheadNM
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Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,290
Re: My speedometer is now accurate

Quote:
Originally Posted by truckster View Post
This is what I'm looking for on as much stuff as I can find:
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.
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547
1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308

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