Hood Tach Accuracy
Short answer: One member’s take: the hood tach isn’t very accurate, is hard to read, and lacks the dampener circuitry good tachs have — so you can’t reliably tell, say, 5000 from 5200 rpm.
His preference is a Sun Super Tach (later Super Tach II) mounted on the steering column with a band clamp wrapped in rubber tubing to avoid scratches. It has a plug at the back, so the harness can be disconnected and tucked under the dash when showing the car.
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Content last modified: June 13, 2026 at 10:06 am
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