Talk To The ECU
Jim hired Pro Dyno to chart the horsepower and perform their dyno tune. "When he put it on the dyno, the first pull was 176 and he got me 207 out of it. There's some loss from the drive- train, like 15 percent or so."
Of course, Jim was referring to the rear wheel horsepower. After the Pro Dyno tune, the V6 pumped out 207 at the tires for an extra 31 horsepower over stock. This tune went through a freer flowing GT muffler and a cold air intake from Western Motorsports - the same guys that stuffed an Aston Martin engine into a Mustang GT. On a V6, this trick intake includes a black radiator cover to direct the ram air, and requires relocating the factory overflow tank. To pump up the looks a little more, Jim picked a new overflow tank from Canton.
Inside, Jim said the factory shifter is "the first thing that needs to go." He compares the operation of the OEM 5-speed" to "like shifting a crow bar through a bucket of bricks." The Hurst short throw, fitted with a classic white cue ball handle, is much more to his liking.
Right now, Jim is far from done with his Boss. He has a list of "future mods," such as a set of dual exhausts. He plans to change the 7.5-inch rear end to an 8.8 with 3.73 gears and a Traction-Lok differential. Even with this future work remaining to be done, Jim is already having a blast with this 2007 V6 'Boss.' After all he went home with a Top 75 award from Mustang Week. Who says the big dollar show cars get all the attention?
Jim Pauly's 2005 V6 Mustang
Ford 4.0-liter SOHC V6
Canton aluminum radiator expansion tank
Hurst short throw shifter
GT-500 strut bar; MRT hood struts; Midwest
Auto Gear radiator cover extensions; UPR Strut half covers
3D Carbon Air dam; Image Performance Products ram air hood; Ford Racing hood pins
Shelby Signature floor mats; Chrome door sill inserts; Window tint by Mike at Sunshade Mobile Tinting; 'Eject' power outlet cover
Eibach Pro Kit springs
Wheels And Tires
ROH ZS wheels, with P235/45/17 front tires and P285/40/17 rear tires
207 RWHP, 243 RWTQ
Boss Mustang Tidbits
The Boss 302 was quite successful in the Trans Am series, almost winning the 1969 championship and clinching it in 1970.
The Boss 429 was built for NASCAR, but that engine was never raced there in a Mustang. BOSS 302 Mustangs did run in NASCAR's Grand American series, however.
Fewer than 9,000 Boss 302's were produced. The '70 BOSS 302 sold for $4,100.
The BOSS 429 was a low 14-second car. About 1,300 were produced and sold at $5,100 each.
The 1971 Boss 351 was arguably one of Ford's best small-block production engines. About 1,700 were produced, combining the 351 Cleveland block and the cylinder heads from the Boss 302.
Kar-Kraft, at the KK-Brighton assembly plant, in Brighton, MI, handled production of the BOSS 429 Mustangs for Ford. They also built two BOSS 429 Cougars in 1969.