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factory tach
Has anyone figured out the issue with these? I have an HEI in my 402, and the tach is way off. I know I've got a 4:10 rear end, but the tach reading would indicate about a 7:50. Can they be calibrated? A friend suggests it needs a filter?
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Bill - Tucson, AZ
47 Chevrolet 2 dr sedan
56 Chevrolet 210 2 dr sedan
66 Chevrolet Malibu 2 dr 4 speed
71 Chevrolet C30 Longhorn
86 Chevrolet Monte Carlo SS (Sold)
01 Chevrolet Tahoe
IM - BUSTERWIVE@aol.com
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