Shift Kit - Chev Allison 1000 2001-2005 5spd 2001 AFC Spring Kit Includes:

AFC Spring Kit Includes:

Improves turbo response

Increase Fuel Delivery

063 5052 Alum

Keeps the wastegate valve closed longer for more bottom end response

Shift Kit - Chev Allison 1000 2001-2005 5spd 2001 AFC Spring Kit Includes:NOTICE: This kit requires removal of the transmission for installation of the internal parts; Installation recommendation: Experienced technician; Includes our exclusive smart Trim Clutch Control valve assemblies for increased durability; Addresses Going to neutral under load; 3 4 slip; burned C2 or C3 clutches; sticks in one gear; won't move after extended parking; loss of pump prime; SHORT CRISP SMOOTH upshifts and kickdowns; Handles 500 Street