How much HP do headers add to a 5.7 Hemi?
Run with the larger 1 3/4″ Hooker BlackHeart headers (p/n 70102303-RHKR), the “cam’d” 5.7L Hemi produced 442 horsepower at 6,100 rpm and 437 lb-ft of torque at 4,500 rpm. That equals a nice 35 horsepower gain from the larger, long-tube headers over the stock manifolds.
Do long tube headers add horsepower?
For long tube headers, the exhaust pipes are much longer and merge farther out. Because of this, each design impacts back pressure in the exhaust system in a different way. Longer port pipes result in lower exhaust back pressure. This means improved oxygen intake and a boost in horsepower.
How much hp can you get out of 5.7 Hemi?
Equipped with a set of SRT8 exhaust manifolds, the stock 5.7L Hemi produced 383 hp and 419 lb-ft of torque. Torque production was 400 lb-ft or more from 3,600 rpm to 5,000 rpm. Adding 8 psi of boost upped the power numbers to 571 hp and 619 lb-ft, while 10.4 psi pushed them to 627 hp and 688 lb-ft.
How much torque do headers add?
We did the math and came up with a staggering average increase of 46 lb-ft of torque. That means that throughout the entire 4,000-rpm band from 2,600 to 6,600 rpm, the engine made 46 lb-ft of torque more with the headers at every single data point.
Do headers improve gas mileage?
While more involved from an installation standpoint, headers in combination with a cat-back system will give you a measurable boost in power. In most cases, fuel mileage will remain the same or improve a bit.
Which Hemi headers are best for performance?
So, long tube 5.7 HEMI headers are the best option for performance. They’re more expensive and can be more challenging to install, though. Catalytic converters on the 5.7 HEMI are located in the midpipes. However, this is an important topic to cover when it comes to headers.
How much is a BBK Hemi long tube headers?
BBK 5.7L Hemi Long-Tube Headers are available in Chrome or Silver Ceramic & Mid-Pipes a… Item #: 1647 / 16470 / 1796 / 1118BBK Performance USD639.992569.99639.99 BBK Performance Long-Tube Headers & Mid-Pipes: 300C / Charger / Magnum 5.7L Hemi 2005 – 2008 (0) Reviews: Write first review
What kind of exhaust header gaskets do I need for a hemi?
Cometic MLS Exhaust Header Gaskets for Chrysler, Dodge, Jeep 5.7L Hemi 2003-2008 C5854-030. COMETIC MLS (Multi-Layer Steel) Exhaust Gaskets are designed for extreme cylinder pressures. The BEST gas…
How many liters are in a hemi engine?
Shop by Parts – HEMI ENGINE PARTS – 5.7L / 6.1L / 6.4L Hemi Engine Parts – Hemi Headers & Mid Pipes Hemi Headers & Mid Pipes.