May 1, 2003

By The Numbers
While the naturally-aspirated version of the stealth 347 stroker made 377 rear-wheel horsepower, Paul also had the chance to dyno Dave Hale's '68 Shelby with an original Paxton supercharger bolted to the 347 package. Set at a conservative 3.5 pounds of boost, the engine generated a best of 423 hp and 404 ft-lb of torque at the rear wheels. As you can see by these numbers, the boosted stroker really starts to strut its stuff at a low 4,000 rpms.

Dyno Results
RPMHorsepowerTorque
2250124.9291.5
2500135.7285.1
2750169.8324.2
3000195.1341.6
3250219.1354.1
3500251.6377.5
3750283.6397.2
{{{4000}}}317.4416.7
4250348.4430.6
4500370.3432.2
4750389.0430.1
{{{5000}}}404.8425.2
5250412.1412.3
5500423.2404.1
5750406.3371.2
{{{6000}}}367.3321.5
6250350.8294.8
6500329.4266.2