|

(Up to 700 hp; 26.70-lb. case)
|
The ST Iron package is a completely assembled Ford 9 third member
equipped with selected options and shipped ready to install. Cases are
constructed from high-grade nodular iron and feature a radial-ribbed design,
providing more uniformed support for the pinion and carrier bearings.
The caps, also nodular iron, are designed with increased thickness for
added strength and ring-gear stability. The ST Iron case bores measure in at 3.0625,
matching the OEM large-bearing size for use with 31-spline axles, or 3.25" for use with 35-spline axles. Standard components include Truetrac torque sensing differential, a chromemoly 1350 yoke and Daytona-style iron pinion support. Ring-and-pinion-gear selections range from 3.50-4.57:1.
Gears are professionally adjusted when assembled.
ST Iron nodular case, 31-spline - $1398.00
8520-112 - Truetrac differential, 8620 gear set with choice of ratio (3.50-4.57),
chrome-moly 1350 yoke, Daytona iron pinion support
ST Iron nodular case, 35-spline - $1739.00
8820-122 - Truetrac differential, 8620 gear set with choice of ratio (3.50-4.57),
chrome-moly 1350 yoke, Daytona iron pinion support |