| Dyno Run No. 15 |
| Edelbrock Performer RPM |
| Camshaft (PN 7122) |
| rpm | power | torque |
| 2,400 | 84.5 | 184.8 |
| 2,500 | 86.8 | 182.3 |
| 2,600 | 98.8 | 199.5 |
| 2,700 | 104.9 | 204.1 |
| 2,800 | 111.3 | 208.7 |
| 2,900 | 116.7 | 211.3 |
| 3,000 | 122.8 | 215.1 |
| 3,100 | 128.0 | 216.9 |
| 3,200 | 132.9 | 218.1 |
| 3,300 | 136.6 | 217.4 |
| 3,400 | 140.7 | 217.3 |
| 3,500 | 145.4 | 218.1 |
| 3,600 | 151.1 | 220.5 |
| 3,700 | 155.5 | 220.7 |
| 3,800 | 159.3 | 220.2 |
| 3,900 | 163.5 | 220.2 |
| 4,000 | 165.5 | 217.3 |
| 4,100 | 169.0 | 216.5 |
| 4,200 | 170.8 | 213.6 |
| 4,300 | 173.4 | 211.8 |
| 4,400 | 173.4 | 207.0 |
| 4,500 | 174.7 | 203.9 |
| 4,600 | 177.0 | 202.1 |
| 4,700 | 178.6 | 199.6 |
| 4,800 | 179.5 | 196.6 |
| 4,900 | 181.5 | 194.5 |
| 5,000 | 182.4 | 191.6 |
Conclusion
So what can we conclude from this battery of swaps, tuning, and tests? That it takes a community to raise horsepower. By "community" we mean proper packaging of components and tuning to achieve the best results. We were able to boost horsepower by 54 ponies and torque by 26 pounds with the complete Edelbrock Performer RPM Power Package.
If we had our Plan for Ponies to do over, we would have opted for slightly larger exhaust pipes for improved breathing and greater torque. We also would have gone with a more aggressive roller camshaft to pump up both horsepower and torque. And this is what a plan for ponies is all about: using good street smarts to make the most of your classic Mustang power package.
 You would think that cylinder...  You would think that cylinder heads gave us our greatest power increase all by themselves, but they didn't; it was a multitude of components and tuning techniques that brought us big gains in small segments. |
 Where Were We? In the initial...  Where Were We?
In the initial test we had a slow Pony and a desire to see where it could go. The base engine saw 15 dyno runs and seems to be no worse for it. Just for grins, we've included here the dyno tests from the beginning, middle, and end for your enjoyment. |
 The Edelbrock Performer RPM...  The Edelbrock Performer RPM hydraulic flat-tappet camshaft sports 0.496-inch intake valve lift and 0.520-inch exhaust valve lift. This cam offers a civilized idle and comes on strong from 4,500 to 5,000 rpm. Even though we have a lot of lift, this camshaft is about low- and midrange torque. |