Each is constructed from high-strength 6061-T6 aluminium profiles, specially machined to fit larger springs and cages, and fitted with full cage friction-reducing needle roller bearings for increased durability. Nose rollers and shafts are made of Cr40 steel, heat-treated and hardened to minimise the wear that naturally occurs between the roller tip and the valve stem. Maximum opening spring pressure is 650 lbs.

OE Number‎

ARA30217716

Feature

Designed to meet the demands of most high-lift roller camshaft profiles

Specially machined to accommodate larger valve springs and retainers

SAE-52100 Full complement precision needle and cage roller bearings

Anodized for a superior finish and to reduce operating temperatures

CNC machined pushrod cups and heat-treated Cr40 roller tips

Internal oiling system for long lasting performance

Clears most centerbolt covers (depending on the inside of the cover).

Vehicle Information

For Ford, Small Block 289-351W
289 (1963-67), 302 (1968-01), 351W (1969-97)