ATS Diesel Duramax Race Exhaust Manifolds
ATS Pulse Flow Exhaust Manifolds 2001-2004 LB7 Non-EGR or Race applicaton 6.6L Duramax
ATS Pulse Flow Exhaust Manifolds for the 2001 to 2004 6.6L Duramax offer far less restriction than stock manifolds and up-pipes. Channel areas were increased dramatically resulting in a 26% increase in airflow. Not only will the Pulse Flow manifolds improve performance, they are a leap forward on reliability. Cast out of High Silica Moly, these manifolds have the ability to run through more heat cycles (lifetimes worth) without fatigue, cracking, or warping.
ATS Diesel Performance
ATS Diesel Exhaust Manifolds
With each exhaust port inlet to the manifold, the main chamber continuously gets bigger, allowing for the added volume, but also to keep thermal velocity up as well. The expansion of the exhaust gasses through the manifold and up-pipe is what drives the turbine side of the turbo charger. The faster you can keep the velocity of the gas, the easier it is to spool the turbocharger.
Thermal barriers play a part in this as well. Due to the material having a high ability to retain heat, the heat remains inside the manifold instead of being expelled. The hot exhaust gasses are still expanding as they exit the engine, and it is ideal to get those gasses into the turbocharger while there still expanding as this will create more action on the turbine wheel & result in a faster spool-up.
This is one huge advantage to using a set of well-engineered race exhaust manifolds over headers, which increase the time it takes the exhaust to reach the turbocharger due to the extra length added to the tubes in order to create equal-length pipes; the result of is the gasses are cooling and therefore contracting by the time they reach the turbine wheel, reducing the action created.
ATS Diesel Performance
The up-pipes are included on this package.
1. ATS Pulse Flow Exhaust Manifold, Driver Side 204-102-4248
2. ATS Pulse Flow Exhaust Manifold, Passenger Side 204-102-4248
3. Up-Pipe, Driver Side 204-106-4248
4. Up-Pipe, Passenger Side 204-104-4248
5. (2) Gasket, Exhaust Manifold to Up-Pipe 97188685
6. (2) Gasket, Up-Pipe to Turbo Pedestal 97192618
7. Hardware Kit 204-001-4248
a. (4) M10-1.5 x 110mm Hex Cap Screw
b. (10) M10-1.5 x 60mm Cap Screw
c. (14) M10 Thick Flat Washer
d. (14) M10 Lock Washer
e. (6) M10-1.5 x 25mm Socket Head Cap Screws
ATS Diesel Performance
ATS Diesel Race Duramax Exhaust Manifolds
ATS Pulseflow Exhaust Manifolds flow better more than stock and eliminate cracking and flexing issues. Constant heat cycles, age and performance parts can stress a stock manifold, leading to exhaust leaks, lower boost pressure and poor performance. Unlike the factory GM manifolds, ATS does not choke the driver?s side manifold. This allows the maximum flow possible from both the passenger and driver?s side manifolds.
ATS Diesel Performance
ATS Duramax LB7 Engine
ATS exhaust manifolds for 2001+ GM Duramax can handle higher temperatures, more heat cycles and help the turbo spool faster. They are all conveniently tapped for an EGT probe so no drilling or tapping is required.
866-488-6942