Are there any changes to the LLY Duramax 6600?
Reports have indicated that the horsepower and torque increase will only be available in 2nd, 3rdand 4thgears (Allison automatic), and the LLY’s power/torque will remain at the previous LB7 level of 300/520 in 1stand 5th. Meeting the HDE (heavy-duty emissions) regulations is more than a little troublesome.
What kind of horsepower does a Duramax 6600 have?
Way back in the fall of 2001, rumors and discussion with industry insiders pointed to a 340 horsepower Duramax 6600 for the 2004 model year.
What’s the difference between lly and Duramax diesel engines?
The LLY also includes a new engine cover, which doubles as a “dead space chamber”, designed to reduce intake noise during part throttle operation. Emissions compliance and competition for market share have made all brands of diesel engines more complex, while at the same time lowering emissions and improving performance.
Where does coolant come from on a Duramax 6600?
The arrow near the top of the image on the left points to the stainless steel cylinder that is part of the cooled EGR system. Engine coolant is used to cool EGR flow. Exhaust gases are scavenged from the right side turbo exhaust inlet pipe, cooled by coolant flow, then injected into the intake manifold on the engine.
What kind of tubing does a Duramax exhaust system use?
Constructed from 5″ mandrel-bent 409 stainless steel tubing, the Large Bore HD 5″ Downpipe-Back Exhaust is designed for durability and optimum airflow. The Downpipe-Back Exhaust uses factory mounting locations and OE style flange and band clamps for a stock fit.
What kind of exhaust system does a Duramax LB7 use?
Replace the stock exhaust system on your 2002-2004 GM LB7 6.6L Duramax LB7 with the AFE 49-44060-1 Large Bore HD 5″ Downpipe-Back Exhaust. Constructed from 5″ mandrel-bent 409 stainless steel tubing, the Large Bore HD 5″ Downpipe-Back Exhaust is designed for durability and optimum airflow.
Are there any issues with the Duramax LLY?
Instead, this generation Duramax is known for overheating issues, namely when towing heavy. In addition, high-mile versions are prone to popping head gaskets. On the plus side, the LLY featured the largest turbo offered on any Duramax engine, and it utilizes variable geometry technology for optimum spool up, mid-range and top-end power.
Which is the best model of Duramax truck?
Perhaps the most desired of all Duramax models are the ’06-’07 Classic body style trucks.