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Part No.: 1374-RPM-Ratio

Jones 4 inch Mechanical Tachometer with Telltale

This item qualifies for FREE Shipping in the continental United States!

These are considered by many racers to be the world's finest mechanical tachometers. We only stock the highest quality sealed unit with a tell-tale needle.

The 4" nominal size mounts in a 4 3/8 inch hole in the dash panel. This size comes with a non-glare black bezel. The standard configuration has the tell-tale reset button on the side, and the cable input fitting on the back. A nice feature on these tachs is that the input is non-directional, which eliminates the need for a reversing gearbox. Just make sure to order the correct drive ratio.

The 4:1 ratio is used when the cable is driven from the camshaft by a Smith's or Titan right angle gearbox, which drives the cable at 1/2 camshaft speed (1/4 crankshaft speed). This is the correct ratio for most FF1600 and FF2000/S2000 installations.

The 2:1 ratio is used when driving directly from the camshaft or distributor without a speed reduction gearbox. It is also used when a 2:1 reduction gearbox is driven by the crankshaft.

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Order Qty
Part Number
Description
Price
Status

1374-10-2:1

Jones 4 inch Tach, 10K rpm, 2:1 Ratio, with Telltale $559.00 In Stock

1374-10-4:1

Jones 4 inch Tach, 10K rpm, 4:1 Ratio, with Telltale $559.00 In Stock
     

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  Jones Mechanical Tachometers

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