Frequently Asked Questions About GMC Brigadier Truck Chrome Stacks & Tops

What years and models of GMC Brigadier trucks do these chrome stacks fit?

Our chrome stacks and tops are designed to fit GMC Brigadier trucks from 1978 through 1988. These parts are compatible with both single and tandem axle configurations. For Brigadiers with factory exhaust modifications or custom setups, we recommend measuring your existing exhaust outlet diameter and comparing it to our product specifications before ordering. Most standard Brigadier models use 5-inch diameter stacks, but some heavy-duty variants may require 6-inch options.

Are these chrome stacks made from stainless steel or chrome-plated steel?

We offer both options depending on your needs and budget. Our premium line features 304-grade stainless steel with a mirror polish finish that provides superior corrosion resistance and longevity. Our standard line consists of heavy-gauge steel with triple-chrome plating that delivers an authentic vintage look at a more accessible price point. The stainless steel options typically last 10-15 years with minimal maintenance, while chrome-plated versions generally maintain their appearance for 5-7 years with regular cleaning and care.

How difficult is the installation process, and what tools are required?

Installation typically takes 2-3 hours for someone with basic mechanical skills. You'll need a socket set (particularly 9/16" and 5/8" sockets), band clamps appropriate for your stack diameter, a tape measure, and potentially a sawzall if you need to modify existing exhaust pipes. The most challenging aspect is usually aligning the stack perfectly vertical - we recommend having a helper and using a level during installation. Pre-1985 Brigadiers may require additional bracket modifications due to frame variations.

What's the difference between straight cut, curved, and miter cut stack tops?

Straight cut tops provide the classic, traditional look and are the most economical option. Curved (or turnout) tops direct exhaust away from your trailer and reduce soot buildup on your equipment, making them ideal for refrigerated units or livestock haulers. Miter cut tops feature an angled opening that adds a custom appearance while providing moderate rain protection. For Brigadiers used in wet climates, we recommend curved tops with built-in rain caps to prevent water intrusion into the exhaust system.

How do I maintain the chrome finish and prevent rust or discoloration?

Regular maintenance is crucial for preserving the appearance of your chrome stacks. Clean them every 2-3 weeks using a dedicated chrome polish and microfiber cloth, paying special attention to areas where exhaust residue accumulates. For trucks operating in winter conditions with road salt exposure, increase cleaning frequency to weekly. Avoid abrasive cleaners or steel wool, which can scratch the finish. Apply a quality chrome sealant every 3-4 months to create a protective barrier. If you notice early signs of rust or pitting, address them immediately with a chrome restoration product to prevent spreading.