1974 NASCAR International Stock Car Racing Rule Book NASCAR Grand National ® Championship Division Section 20-9 -- Clutch and Flywheel

a. High speed clutch assembly permitted as long as flywheel weight is not changed.

b. Size, weights and material must be normal customer production. Only steel flywheel permitted.

c. A steel scattershield, not less than 3/8 inch thick, must be installed over flywheel and clutch area. Special construction all-steel clutch housings are permitted in lieu of seperate scattershield. "Clutch-Flywheel Flexible Housing Safety Shield" is approved for use.