Southern Four Cylinder Mod 4

Southern Four Cylinder Mod 4 The purpose of this page is to promote a class of race cars that is affordable and still competitive and appealing to the the race fans.

The Mod 4 also called Pro 4, T4 and F4 modified is basically a modified slightly scaled down and running a basically stock 4 cylinder engine. They must have a stock bottom end and pull 12 inches of vacuum at 1200 rpm. Tires must be a DOT minimum 360 tread wear or a Legend pull off tire. See Red River Speedway rules/ Southern 4 cylinder for full details.

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Wichita Falls, TX

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