Flowtech Cast Iron Exhaust Manifolds for GM Gen III, IV LS Engines [Silver Ceramic Finish]
387-31730-1FLT
Product Q&A
View Now
![Cast Iron Exhaust Manifolds for GM Gen III, IV LS Engines [Silver Ceramic Finish]](http://www.jegs.com/images/photos/300/387/387-31730-1flt.jpg "Cast Iron Exhaust Manifolds for GM Gen III, IV LS Engines [Silver Ceramic Finish]")
Items You Need
Silver Ceramic Finish
FlowTech 31730-1FLT Cast Iron Exhaust Manifolds:
- Stay close to the engine for multiple chassis applications
- Less underhood noise than headers
- Uses factory or aftermarket gaskets and fasteners
- Includes nickel plated steel mating flanges
FlowTech 31730-1FLT Cast Iron Exhaust Manifolds Note:
- Not compatible with 2004-2006 Pontiac GTO starters and bellhousings
Emissions:
This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle. Federal guidelines indicate that an engine swap is allowable if one or more of the following conditions apply.
- If there is a reasonable basis for knowing that emissions are not adversely affected as described in the EPA Tampering Policy dated November 23rd, 2020
- The resulting vehicle is identical (with regard to all emissions related parts, engine design parameters and engine calibrations) to a certified configuration of the same or newer model year as the vehicle chassis
- The vehicle is a uncontrolled vehicle
- Vehicles that were manufactured before emission control regulations took effect are called uncontrolled vehicles
- Aftermarket parts regulations and anti-tampering laws do not apply to these vehicles
- An EO legal engine swap kit is utilized (such as a GM EROD)
- The vehicle is being used for Competition Use Only
- Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street
Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.