Run on the Mustang dyno once again, the additional 3 psi of boost increased the peak power output from 433 hp and 493 lb-ft to 481 hp and 545 lb-ft. With the torque output close to 550 lb-ft of torque, we were talking about some serious cylinder pressure, especially with stock head gaskets and bolts (in who knows what kind of condition at 200,000 miles). We'd not recommend running this power level on an otherwise stock motor for long, but it's nice to know that it's possible. Run at the strip at this power level and with 28x10.5-inch ET Streets, the front swaybar and rear quad shocks disconnected (but otherwise stock 5.0 suspension), the five-speed Mustang ripped off a string of mid-11s, the best being 11.47 at 122.6 mph.
Despite the stock suspension, the 5.0 managed 1.50-second 60-foot times, according to the timeslips. Even more impressive was the fact that the motor was still alive and ready for Part 2. Check back with us next month as we install a set of cylinder heads, a cam upgrade, and a new intake manifold.
The oil fed from the oil-sending...
The oil fed from the oil-sending unit was connected to the top fitting on the turbo.
Since the turbo system relied...
Since the turbo system relied on a single downpipe (before the Y section), both right and left oxygen sensors were installed into fittings on the down pipe.
On the Mustang chassis dyno,...
On the Mustang chassis dyno, the turbocharged 5.0 pumped out 433 hp and 493 lb-ft of torque on just 10 psi of boost. Upping the boost pressure to 13 psi resulted in peak numbers of 481 hp and 545 lb-ft of torque.
The turbo kit from HP Performance...
The turbo kit from HP Performance featured an ultra-efficient (front-mounted) air-to-air intercooler. The intercooler ensured a dense and powerful inlet air charge.