Why Ford Mustang Fans Are Still Salty The Boss 351 Beat The 429 Cobra Jet In 1971
Jalopnik••technology
Key Points:
- A 1971 Motor Trend comparison test showed the Mustang Boss 351 outperforming the more powerful 429 Cobra Jet Mach 1 in acceleration, despite the 429CJ's higher horsepower and torque figures.
- The test was not a fair comparison due to differences such as the Boss 351's shorter 3.91:1 final drive versus the 429CJ's 3.25:1, the Boss having a four-speed manual while the 429CJ had a three-speed automatic with air conditioning, and the Boss running aftermarket headers.
- Tire differences further skewed results, with both cars running narrow F60-15 tires that disadvantaged the heavier, torque-heavy 429CJ; tests with wider or grippier tires showed improved
