Eaton Detroit TrueTrac LSD Differential For GM Truck 14-Bolt (9.5") - HD & Vortec MAX ModelsEaton Detroit TrueTrac LSD Differential For GM Truck 14 Bolt (9. 5"). Fits 99 13 HD models using 14 bolt housing with 9. 5" ring gear. Also fits 6. 0 6. 2 equipped models that have the optional 14 bolt housing 9. 5" ring gear such as Vortec MAX models. Part Number 914A538 DOES NOT fit standard 1500 Models with 8. 5" 8. 625" ring gear or 3500HD models with optional 10. 5" ring gear. Arguably the most popular LSD upgrade for the 99 present GM Truck 1500

662" 114 LSA

and your choice of length

Conical Valve Springs:

Part Number 03-01-0053 Cam Type Supercharged Brand Cam Motion Engine Type Gen III/Gen IV Cam Style Hydraulic Roller Lift

050" is 229/242 for the intake and exhaust

All 1987+ OEM Roller Blocks

The performance alloy gear sets use an alloy that offers greater strength but at the expense of a much shorter lifespan

88 Housing T4 Downpipe Flange 3

Does not fit ZR1 models

This camshaft will work in a stock engine

Increased exhaust velocity adds power

113 Lobe Center Angle with a 110 Intake Centerline