This is an interesting article. They really lay it on Ford for doing such a great job with this motor. They should have compared the BOSS 302 while they were at it. Also note the LS7 at the bottom of the list.
http://bimmerboost.com/content.php?6586-Comparing-the-2016-Ford-Shelby-GT350-Voodoo-V8-to-the-best-naturally-aspirated-performance-engines-of-the-past-decade-with-specs-and-dynographs
In order of wheel horsepower:
1. Mercedes-AMG SLS Black Series M159 - 510
2. Lamborghini LP560-4 V10 - 469
3. Shelby GT350 Voodoo V8 - 467
4. Porsche 997.2 GT3 RS 4.0 Flat-6 - 457
5. Porsche 991 GT3 Flat-6 - 453
6. Ferrari 458 Italia V8 - 448
7. Chevrolet Corvette C6 Z06 LS7 V8 - 441
8. Mercedes-AMG W204 C63 AMG Black Series M156 - 436
9. Ferrari F430 Scuderia V8 - 427
10. BMW E60 M5 S85 V10 - 426
11. Porsche 997.2 GT3 RS 3.8 - 419
12. Ferrari F430 V8 - 396
13. Audi R8 V8 - 352
14. BMW E92 M3 S65 V8 - 350
In order of wheel horsepower per liter:
1. Porsche 991 GT3 Flat-6 - 119.2
2. Porsche 997.2 GT3 RS 4.0 Flat-6 - 114.2
3. Porsche 997.2 GT3 RS 3.8 - 110.2
4. Ferrari 458 Italia V8 - 99.5
5. Ferrari F430 Scuderia V8 - 99.3
6. Ferrari F430 V8 - 92.0
7. Lamborghini LP560-4 V10 - 90.1
8. Shelby GT350 Voodoo V8 - 89.8
9. BMW E92 M3 S65 V8 - 87.5
10. BMW E60 M5 S85 V10 - 85.2
11. Audi R8 V8 - 83.8
12. Mercedes-AMG SLS Black Series M159 - 82.2
13. Mercedes-AMG W204 C63 AMG Black Series M156 - 70.3
14. Chevrolet Corvette C6 Z06 LS7 V8 - 63.0
http://bimmerboost.com/content.php?6586-Comparing-the-2016-Ford-Shelby-GT350-Voodoo-V8-to-the-best-naturally-aspirated-performance-engines-of-the-past-decade-with-specs-and-dynographs
In order of wheel horsepower:
1. Mercedes-AMG SLS Black Series M159 - 510
2. Lamborghini LP560-4 V10 - 469
3. Shelby GT350 Voodoo V8 - 467
4. Porsche 997.2 GT3 RS 4.0 Flat-6 - 457
5. Porsche 991 GT3 Flat-6 - 453
6. Ferrari 458 Italia V8 - 448
7. Chevrolet Corvette C6 Z06 LS7 V8 - 441
8. Mercedes-AMG W204 C63 AMG Black Series M156 - 436
9. Ferrari F430 Scuderia V8 - 427
10. BMW E60 M5 S85 V10 - 426
11. Porsche 997.2 GT3 RS 3.8 - 419
12. Ferrari F430 V8 - 396
13. Audi R8 V8 - 352
14. BMW E92 M3 S65 V8 - 350
In order of wheel horsepower per liter:
1. Porsche 991 GT3 Flat-6 - 119.2
2. Porsche 997.2 GT3 RS 4.0 Flat-6 - 114.2
3. Porsche 997.2 GT3 RS 3.8 - 110.2
4. Ferrari 458 Italia V8 - 99.5
5. Ferrari F430 Scuderia V8 - 99.3
6. Ferrari F430 V8 - 92.0
7. Lamborghini LP560-4 V10 - 90.1
8. Shelby GT350 Voodoo V8 - 89.8
9. BMW E92 M3 S65 V8 - 87.5
10. BMW E60 M5 S85 V10 - 85.2
11. Audi R8 V8 - 83.8
12. Mercedes-AMG SLS Black Series M159 - 82.2
13. Mercedes-AMG W204 C63 AMG Black Series M156 - 70.3
14. Chevrolet Corvette C6 Z06 LS7 V8 - 63.0