Headers vs. Exhaust Manifolds ~ 'Let The Debate Begin'
Brutini,
What 'OK Kustom Headers' proved on a 1971 Camaro Z-28, with all
stock components.
They gained {+14 Horsepower} and {+21 Ft/Lbs. of Torque}
Gross Horsepower
> The 350 was Factory-rated at 330 HP @ 5600 RPM's.
> Torque was 360 Ft./Lbs. @ 4000 RPM's.
After the Headers were installed they went to 344 HP @ 5500 RPM's
Torque went to 371 Ft./Lbs. @ 3800 RPM's
See the Torque > 11 Ft./Lbs. higher at 200 lower RPM's.
The Horsepower {+ gain} of the Headers, was thru the 'stock' Mufflers.