Originally Posted by AndyF
Originally Posted by GODSCOUNTRY340
Nick's Garage just dyno tested a 440 using factory HP exhaust manifolds, max wedge manifolds and headers.
Results:
HP manifolds---- 375 horsepower------ torque- 389
Max Wedge------ 410 HP ----------------- torque-446
Headers ---------- 419 HP ----------------- torque-463
The headers (1 7/8" tubes) increased 44 horsepower. Back in the day everybody claimed they only gave you 15 more horses.


All depends on the combination. Those dyno tests can be "rigged" by changing the camshaft. The results also will change a lot depending on the muffler and tailpipes that are used.



He didn't change anything on the engine except the manifolds. Go to Youtube and type in Nick's Garage, he's a Mopar guy too.

I love the smell of Deer guts in the morning, it smells like... VICTORY!