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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jul 2011 Posts: 15 New Guy | | New Guy Joined: Jul 2011 Posts: 15 | Steve, Most tachs will say that. as long as your dip switches are correct there should be no reason to manually calibrate the tach you are using. The setup is usually meant for non standard type setups. Your standard 350 will be find and your probably going to be within 100rpm of accurate if not dead on. I wouldnt worry about a calibration
Curtis Kershner
1959 GMC Apache (in progress)
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