Thread: Frankentruck
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Old 02-01-2019, 09:41 PM   #199
cwcarpenter98
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Join Date: Jan 2018
Location: Hickory Flat, GA
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Re: Frankentruck

Today I swapped out the 22 tooth driven gear for a 21 tooth gear in an attempt to make my speedo more accurate. Unfortunately, the 21 tooth gear just bounced around for a little bit, and now it almost never moves. I've driven the truck 10 miles at the most since I changed the gear.

I had used TCI's calculator and used a 8 tooth drive gear for the calculation. I thought I had counted 8 teeth on the drive gear, but now I'm not too sure. Should I make a new calculation with a 7 tooth drive gear, and purchase that driven gear with the hope that I will be right this time? Or should I stick the 22 tooth gear back in that I know works, but it runs 5 mph slow?
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Christian Carpenter

1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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