Total Cost Involved Engineering (TCI), now celebrating the company’s 50th anniversary, is pleased to introduce its new K5 Blazer/Jimmy Pro1 chassis that is as capable off-road as on-road. TCI’s new 1969-1972 4×4 K5 Blazer Pro1 4-link chassis is not only strong but multi-functional and is built to be a direct replacement for worn or rusted K5 Blazer or Jimmy chassis with the potential to use up to 37” tall tires fit with full turning radius, travel, and articulation.
This new chassis design is built around late-model LS/LT engine/trans platforms using a driver-side output Atlas Transfer Case. To ensure torsional rigidity, the engineers at TCI utilized its unique triple wall frame rail design, aka #BoxedBeam, that places a third vertical wall down the middle of the frame rails. The chassis features a widened front half of the frame to provide additional steering and header clearance. All frame rails, cut out of 10-gauge plate steel, are fixture welded with over 120 feet of weld bead for consistent fitment and tight tolerances front to back ensure the tub, core support, and even the bumpers bolt-on without drama.
Maximized length link bars provide minimal wheelbase change throughout travel and have the added benefit of limiting roll steer. The coilover angle is close to vertical to keep the motion ratio close to 1:1 and mounts as wide as possible for maximum roll control.
TCI partnered with RockJock by John Currie for readily available replacement steering components that includes a Borgeson steering box, RockJock high steer outer knuckles, forged tie rods, and front hubs based on the Jeep JL (2018-present) platform. Crucial steering angles and tie rod lengths were carefully designed to keep the bump steer in check and minimize lateral movement.
TCI partnered with Currie to provide front & rear differentials that will withstand the abuses of big tires and big horsepower. High Pinion Currie 44 front and High Pinion Currie 60 axles using heavy duty axle tubes, yokes, chromoly axles, & U-joints provide the strength equal to the new chassis.
TCI Vice President and Head of Operations, Sal Solorzano adds, “Whether you are cruising down the highway, flying across the desert, or crawling up the mountainside this chassis has you covered. It has the flexibility, strength, torsional rigidity, and protections that will make handling your Blazer highly functional as a daily driver and/or competition. There’s been a renaissance of interest in the K5 SUVs for some time, so the demand is definitely there for a chassis like this.”
All cab, floor, core support, engine, transmission, transfer case, and bumper mounts are included. For more information, be sure to visit Total Cost Involved Engineering’s website.
