SCS Professional Series Quick Change Gear Set - 6 Spline - Set 623 - 4.11 Ratio 2.99 / 5.65 - 4.33 Ratio 3.15 / 5.95 Ignition Module C2500 Suburban

C2500 Suburban

The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor

GM Fullsize SUV / Truck 1988-98

2007-2007 Peterbilt 220

SCS Professional Series Quick Change Gear Set - 6 Spline - Set 623 - 4.11 Ratio 2.99 / 5.65 - 4.33 Ratio 3.15 / 5.95 Ignition Module C2500 SuburbanManufactured from 9310 aircraft alloy for maximum strength, 6 spline quick change gears are crown hobbed, broached for 6 spline shaft fit, and black oxide finished for corrosion protection. Gears undergo a five step heat treating process to deliver maximum durability. Since 1979, SCS Gearbox, Inc. has been listening to it's customers! When SCS Gearbox first started manufacturing, it was to meet the needs of tractor pullers to provide specialized