Chevrolet / GMC C-10 1963-1987 QA1 Tubular Cross Member Kit

Product Overview

Fits: Chevrolet/GMC C10 1963,1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977,1978,1979,1980,1981,1982,1983,1984,1985,1986,1987

Product Description

Already have a QA1 coil-over conversion system on your C10? This bolt-in upgrade adds powered rack-and-pinion steering, offers 2” of additional drop range (up to 8” total) and saves an additional 70 lbs of weight. The result is improved drivability and steering feel while achieving the perfect stance.

Rack and Pinion Steering
A powered rack-and-pinion provides quicker and tighter steering. Plus, increase steering angle when fitting larger wheels and tires and improve geometry for enhanced drivability.

Improved Ground Clearance
The tubular design makes your undercab rails the truck’s lowest point. Updated lower shock mounts add 2” of clearance. New upper shock mounts increase travel for a great ride and performance, even at lower ride heights.

Compatible With Existing QA1 Coil-Over Systems
Easily swap out a few components on your existing QA1 shocks and control arms. This means you can upgrade your truck in stages, starting with coil-overs and control arms.

Easy, Bolt-In Installation
The crossmember comes powder coated and ready to install. You do not need to cut or weld your frame. It easily locates the steering rack, and you can choose mounts (sold separately) for common engines.

Fitment Notes
This kit does not include shocks, springs or control arms – these are included in QA1 coil-over systems. Additional kits are available with these included.
Includes updated hardware for existing QA1 sway bar
Total drop range depends on wheel/tire fitment
Will require you to trim inner fenders
Engine mounts are year-range specific to maintain OE bellhousing location
Optimized bump steer settings require at least 18” wheels
18” wheels can run up to 6” of backspacing
20” wheels can run up to 7” of backspacing
Requires use of 1973-1987 C10 spindles
May require different headers and oil pan (stock SBC & BBC pans fit)
Steering shaft is not included
May require new power steering hoses depending on fittings, pump and engine placement

Curious as to which spring rate to use?

The general rule that you can abide by is the heavier the coil the heavier the motor. A V6 or Straight 6 motor will generally use the lighter spring rates. The middle of the road weight will be set for your small block or LS applications, and the heaviest coils will be reserved for the big block motors. Now these are not rules set in stone. If you have a small block and are looking for a little better ride quality you can opt for the lighter coils to achieve that. In the same sense if you are working with a straight line or DRAG racing application you may opt for the light coils as well to achieve the weight transfer you need to get that good launch. When you are looking at the spring rate on the rear it's pretty simple. If you are looking for a better ride quality go with the lighter coils and if your application is more performance driven select the stiffer spring rate for handling. Don't get too stressed on ensuring you get it right the first time. The coils are easily interchangeable and are not too expensive so if you decide the spring rate you have chosen isnt quite right give us a call and we can get you a different set. If you are unsure give us a call. We are happy to help.

Warranty Information

Choppin Block warrants this product to the end-user, when properly installed and under normal conditions of use, to be free from defects in workmanship and materials for a period of one year from the provided date of purchase for the original purchaser of the product. This warranty does not cover abuse, operation in a manner inconsistent with the product’s design, or damage resulting from exposure to the elements. In the event that a product is out of the warranty time period, we will evaluate and respond to the customer’s concerns on a case-by-case basis.