GM Ending Northstar V8 Production; Hello Twin-Turbo V6

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GM Ending Northstar V8 Production; Hello Twin-Turbo V6

General Motors has confirmed that next month it will cease production of the DOHC Northstar V8, one of the most advanced engines the company has ever built. In its place, GM will use stop-gap measures including the current series of direct-injection V6 engines, as well as the company’s small-block V8s which use an archaic overhead-valve system which dates back to 1955.

GM had planned a replacement for the engine, called the Ultra V8 or UV8, but that project was scrapped when GM headed into bankruptcy. According to a report by InsideLine, however, the engine is completely developed and could still be used.

A far more likely alternative, however, is a new twin-turbo V6 motor, designed to rival Ford’s EcoBoost technology. The end of the Northstar V8 is also likely to signal the end for the two models it is used in: the Cadillac STS and DTS.

First launched in the 1993 Cadillac Allante, the 4.6-liter Northstar V8 is currently available as either a 292-hp or 320-hp motor, or when supercharged in cars like the STS-V makes a total of 469-hp.

[Source: InsideLine]

  • Chad

    There is no replacement for displacement. There is still a place in this world for normally aspirated V8s.

  • A.R.

    “company’s small-block V8s which use an archaic overhead-valve system which dates back to 1955.”

    So the 7.0 LS7, 6.2 LS9/LSA, 6.1/5.7 HEMI are all archaic eh? Show me another vehicle that can have 500 HP, go 0-60 in 3.7 seconds, and obtain 24 MPG highway (Z06 Corvette). If well engineered, OHV engines have proven to be very competent, refined, easily repairable, and compact for their respective vehicles.

    I bet this author won’t call the Bentley 6.75 Litre OHV V8 “archaic”. I love both OHV and OHC engines, but I’m not afraid to call out poor and biased reporting methods.

  • Oldsmoboi

    Uh, DOHC goes back to 1928 with Alfa Romeo…. the pushrod OHV technology is actually newer than DOHC by about 20 years.

  • Jim

    First, Olds. Then Pontiac. Now the Northstar V8 which rescued Cadillac.
    Think about this……does GM want to stay in the car business?

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