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The Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, [citation needed] but is most associated with Cadillac's Northstar series.
The 4T80-E is a hydramatic transmission and was developed for use with V8 front-wheel-drive cars, and at the time exclusively the Cadillac Northstar engine. [3] It was designed with extreme power handling capabilities at the time. The 4T80-E debuted in the Cadillac Allanté in 1993 along with the Northstar Double Overhead Camshaft (DOHC) V8.
"Piston slap" sometimes sounds more like a knock or the sound of a diesel engine running. It is typically only present when the engine is cold and disappears as the engine reaches operating temperature. [90] Another common problem with the 2001–2006 5.3L engines was cracking cylinder heads. This is commonly called the "Castech Head" failure.
Engine: 4.6 L Northstar LD8 V8 4.6 L Northstar L37 V8: Transmission: 4-speed 4T80 ... the lightly stretched DTS-L was released in November 2006 for the 2007 model year.
Looking at reported cases, there seems to be a seven year spike in cases, and a nine-year spike. Cars seven years old have had their coolant go out-of-date and then have another two years for acid coolant to find its way into the head bolt wells and do the damage; the nine-year spike may be due to lease returns that are reconditioned at two years.
While most internal combustion engines don't require time to warm up — even though many people like to hop into a warm vehicle — EV owners may need to take some action before getting on the road.
Winter running can be cold and wet, but this gear will keep you warm, dry, and comfortable so that you can train all year in any condition. 20 Cold Weather Running Essentials to Help Brave the ...
The Aurora came standard with Oldsmobile's 4.0 L (244 cu in) L47 V8 engine, a DOHC engine based on Cadillac's 4.6 L Northstar V8. The Northstar engine and 4T80-E had been exclusive to Cadillac prior to the Aurora. The L47 put out 250 hp (186 kW) at 5600 rpm and 260 lb⋅ft (353 N⋅m) torque at 4400 rpm. [15]