northstar l47

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, but is most associated with Cadillac's Northstar series.
Displacing 4. 6 L in its basic form, the direct family line transitioned to longitudinal and 4. 4 L supercharged versions. Variants were used at Oldsmobile , as well as in several top-end 2000s Pontiacs and Buicks....