Mustang Runs 7s with Stock Bottom End in LS Engine
Chevy 5.3-liter swaps abound in drag-racing Fox Bodies and this one throws down a quarter-mile record.
When it comes to pony cars, the LS-swapped Fox Body has become a staple of the drag strip. Most at the track may have tricked-out blocks, but some still have their stock bottom end. That stock hardware doesn’t hold them back, as one driver recently proved. This Fox Body with a stock bottom end ran a 7.91 at 173.61 mph, making it one of the world’s fastest.
The car runs a 5.3-liter Chevy pickup motor with factory internal parts; the crankshaft, rods and pistons are all stock. It’s basically a generic cylinder block and the head isn’t much different. What sets the car apart is the turbo, a custom job from Forced Inductions that gives it quite a bit more power than the standard 5.3-liter.
On the track, the turbo Fox first squared off against a turbo SN95 with a run through the lights off-throttle in 8.60 seconds at 125 mph. In Round two, the Fox Body had the track to itself and went faster in 8.16 seconds at 144 mph.
Round three pitted the Fox Body against a turbo Malibu with a winning time of 7.97 seconds at 173 mph. The semifinal put this old Fox Body on the track with a modern turbo Mustang. Even with a win, that run was slightly slower, coming in at 8.01 seconds at 161 mph.
The final race put this underdog on the track with a turbo Trans Am. The Trans Am’s wheels might have left the ground, but the Fox body left the F-Body in the dust, setting a new stock bottom-end record for 5.3-liter engines of 7.91 seconds at 173 mph.
Just because it’s not as shiny and new on the outside doesn’t mean it doesn’t have it where it counts: under the hood. This Fox Body blew away the competition, setting a new record no one thought possible before the little white car hit the tracks.
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