Jordan Weir is looking to be the quickest GT500 with a factory long block and TVS supercharger in the quarter-mile with his 2013 Shelby GT500; he recently ran a 10.18 at 144 mph best pass during a few shakedown runs. The current record is a 9.78 at 141 mph for a 5.8-liter stock long block with a TVS supercharger, while the overall stock long block/TVS supercharged GT500 elapsed time record (5.4-liter and 5.8-liter) currently sits at 9.76. These records were established with ported superchargers and a stock long block. Weir, on the other hand, ran his 10.18 without slicks on the car, so he feels like he has a shot at the record.

Oh so close, but yet so far. However, Weir is definitely consistent. It’s supposed to be hard to race consistently in a stick car, but Weir appears to have that part down pat.

Even though the engine in Weir’s GT500 is stock, in an attempt at the record, he’s modified the rest of the car to be far from it. All the components Weir uses on the car are carried and tested for his business, Weir Racing. If BMR Suspension makes it, it’s on the car, with QA1 double-adjustable coilover struts up front and double-adjustable shocks out back. The suspension advice and tuning comes from London Chassis Dyno. The Tremec TR6060 transmission is stock, but the car does have a SPEC ST-trim clutch to hold the power, and an MGW shifter to aid in accurate gear changes.

Since the engine and supercharger must remain stock to go after these records, performance mods are aimed at helping the engine and blower breathe more efficiently without cracking a valve cover. The stock TVS supercharger has been ported by Billet Pro Shop and uses a 2.4-inch pulley, auxiliary tensioner, and a 90mm idler pulley to maximize efficiency. An ATI Performance Products 15-percent crankshaft damper, a Thump Racing tensioner, and a Gates heavy-duty ‘Blue’ belt helps add boost and reliability to the front accessory drive system, while a Power by the Hour XBA supercharger inlet, also ported by Billet Pro Shop, works with a JLT Performance 155mm carbon fiber intake to increase the amount of air into the blower. A Kenne Bell 168mm throttle body finishes up the air intake system. To get air out as fast as it comes in, Weir’s GT500 benefits from American Racing Headers 2-inch headers and a corresponding off-road H-pipe.

Weir has also made the switch to E85 as the car’s primary fuel, so the system has to be able to provide the engine with the increased volume that E85 requires to support the horsepower levels. These changes necessitated a Fore Innovations return-style fuel system using a triple pump hat, feeding Injector Dynamics ID1300 fuel injectors.

The enemy to horsepower is heat, especially in positive-displacement-style supercharged combinations. To help keep the underhood heat at bay Weir added a C&R Racing radiator and heat exchanger and a Dad’s Custom Intercooler Tanks ice cell. To bring it all together, Weir relies on Lund Racing’s Jon Lund II for remote tuning to make sure all available horsepower is on the table.

Jordan Weir’s Shelby GT500 goes by the name of Deimos. In Greek mythology Deimos is the spirit of fear and terror. In true Shelby fashion, we’re sure Deimos strikes fear and terror in those in the other lane.

This past Friday Weir took his shot at the record at Cedar Falls Motorsports Park in Cedar Falls, Iowa. Try as he might, Weir was painfully short of the record. Three 9.79 passes were the result with the quickest being a 9.79 with a 5.

“Something interesting is the two quickest passes were hot-lapped, and less than 10 minutes apart,” Weir says.

Inlet air temps didn’t go above 80-degrees the whole pass, even after hot-lapping the car. He did reset the quarter-mile speed record with a 144.40 mph pass, but the elapsed time record wasn’t in the cards that night.

Another attempt is on deck this coming weekend to break the record, and Weir has a couple tweaks he’s going to make to the combination, although time is limited between now and then. The GT500’s main goal in life is Texas Mile-type competition. With the Texas Mile coming up in October he wants to get the stock engine out, and build her up for a go at the Shelby GT500 mph record, which Weir says is 221 mph.

Regardless of the scenario or the length, Weir will be looking to go fast–whether it be in the quarter-mile or Texas Mile.

Nothing to see here; just a stock 5.8-liter Shelby GT500 engine capable of mid-9s in the quarter-mile. Well, the engine itself may be stock, but little else remains that way.