Speedo gear for 3:73
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Joined: Aug 2019
Posts: 11
From: NH
Speedo gear for 3:73
Hi All
i have a 67 Camaro with a moser 373. The car has 17” tires. The trans is a turbo 400.
Took her her out in the maiden run last night and the Speedo says I was going 50 but it was more like 38 or 40.
Can i adjust the plastic gear - anyone know which one I would need?
Thx.
i have a 67 Camaro with a moser 373. The car has 17” tires. The trans is a turbo 400.
Took her her out in the maiden run last night and the Speedo says I was going 50 but it was more like 38 or 40.
Can i adjust the plastic gear - anyone know which one I would need?
Thx.
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Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: Speedo gear for 3:73
To calculate the correct driven gear, you need:
- # of teeth on drive gear (on tailshaft of trans)
- rear axle ratio
- tire outside diameter (not wheel diameter)
This site walks you through it, including a tire diameter calculator, and tables of available drive gear teeth count for specific transmissions, like your TH400
https://www.tciauto.com/speedometer-gear-calculator
- # of teeth on drive gear (on tailshaft of trans)
- rear axle ratio
- tire outside diameter (not wheel diameter)
This site walks you through it, including a tire diameter calculator, and tables of available drive gear teeth count for specific transmissions, like your TH400
https://www.tciauto.com/speedometer-gear-calculator
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