Since its introduction, UMI's Stage 3 kit has been the choice for GM A-body owners looking to achieve great street manners combined with Pro-Touring handling capability. In this newest revision we've refined our parts list to provide the most common options in one convenient package. Simply click and enjoy the performance. Up front you'll find Delrin lower a-arm bushings for precise steering along with 1/2 inch taller upper ball joints to plant that tires contact patch. Out back we include our popular Roto-Joints and an adjustable length upper control arm so the axle can articulate nicely after you've perfected the driveline angle. Sway bars are UMI's tried and true 1-1/4 inch front and 1 inch rear for a great front to rear handling balance. We are especially proud to introduce our own ultra-premium springs built from CrSi wire and featuring 530 lb/in front and 130 lb/in linear rates. These carefully selected rates help your car split the difference between a comfortable ride and awesome handling. And what better to control the UMI springs than UMI's hot new SP series monotube shocks. The kit is available in beautiful red or black powder coat and is 100% designed, tested, manufactured and raced out of our shop in Philipsburg, PA - USA.1964 A-Body Note: This kit is designed to work with the factory 1964 rear end. If the vehicle does not have a factory rear end from 1964 and is using a 1965 or newer GM rear end, please purchase the kit for 1965-1966 models. The 1964 rear end is the only rear end housing that uses UMI-3005 housing bushings.Features:Increased spindle height by 1/2 inch via tall upper ball joints for improved camber gain and a better contact patch. Works nicely in conjunction with lowering springsUpper a-arms add caster for improved steering feel and straight line stabilityLower a-arms feature UMI-built Delrin bushings and accept standard springs or coilovers1.250 inch front sway bar for flat cornering, CNC bent from 4140 balanced with a 1 inch solid heat formed rear sway barUMI SP series shocks feature monotube construction and designed & tuned for optimum ride quality combined with responsive handlingUMI springs feature ultra premium CrSi material with linear rates front and rear for consistent handling (530 lb/in front, 130 lb/in rear)Rear trailing arms feature Poly and Roto-Joints as well as adjustable uppers for setting pinion angle and rear lateral locationRoto-Joints allow smooth articulation for improved handling and less bindUMI's Stage 3 Handling Kit Includes:UMI-4032 - Tubular lower front a-arms with Delrin bushingsUMI-4033-1 - Upper front a-arms with Delrin bushings & 1/2 inch taller ball jointsUMI-4035 - Heavy duty 1-1/4 inch front sway bar with new bushings & endlinksUMI-4034 - Solid 1 inch heat treated rear sway barUMI-4052 - 1 inch lowering springs, linear spring rates (530 lb/in front, 130 lb/in rear)UMI-4038 - Tubular rear lower control arms with Roto-JointUMI-4039 - Tubular rear upper control arms with Roto-JointsUMI-4029 - Tubular frame braces with hardwareUMI-3005 - Replacement rear end housing bushingsUMI-4004 - Front upper & lower Grade 8 hardware kitUMI-4001 - Rear control arm Grade 8 hardware kitUMI-S42030 - UMI monotube shocks, designed & tuned for optimum ride quality combined with performance
Manufacturer Part Number : ABF405-64
Part Notes:
Small block motors, Pontiac 400 or Big Block with aluminum heads and intake tend to sit level with this kit. Lightweight LS may require spring trimming. An additional 1/4 inch front end drop may occur on vehicles with full weight big block engines.