What are the rocker arms on a Ford 390?

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Where can I get rocker arms for my Ford?

Select your preferred location and we’ll note which parts are ready to be picked up TODAY. Rocker Arms, PQx Platinum Series Shaft-Mount, Full Roller, Stainless Steel, Natural, 1.75 Ratio, Ford, Big Block FE, Kit

What kind of rocker does a Ford engine use?

Factory-style rockers, whether original equipment or aftermarket replacements, are steel or ductile iron with either a ball or cup pushrod end and a radiused contact for the valve. The factory non-adjustable rocker system is a simple system that works for common street use.

What’s the ratio between adjustable and non adjustable engine rockers?

The interference thread is designed to remain in position when adjusted but often loosens in service after many adjustments have been made. The ratio for adjustable rockers is normally quoted as being 1.76:1, while the non-adjustables are referenced as having a 1.73:1 ratio.

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What should the torque be on a Ford 390?

For this reason, the 390’s factory torque specifications should be followed. Tighten each of the 390’s spark plugs to between 15 and 20 ft-lb of torque. Tighten all cylinder head bolts to between 80 and 90 ft-lb of torque.