HEMI Engine Family Receiving Upgrades To Fuel Economy, Power
http://www.thetruthaboutcars.com/2015/0 ... omy-power/
Changes are coming to FCA’s HEMI engine family, ranging from increased fuel economy, to higher horsepower.
Though details are scant, the 5.7-liter HEMI V8 could receive direct injection to increase its fuel economy, Allpar writes. In turn, the upgrade would be enough to reduce or remove the need for FCA to buy CAFE credits.
Meanwhile, the Hellcat’s development splits two ways. One modification — for the upcoming Jeep Grand Cherokee Trackhawk — would be tuned for greater refinement to better match the character of both SUV and driver, likely leading towards less horsepower under the bonnet.
The second modification is in response to Ford and Shelby bringing to market an engine said to be more powerful than the Hellcat. Thus, for 2017, FCA are looking to push the Hellcat beyond 707 horsepower against the Blue Oval’s twin-turbo 5.0-liter with direct injection and a potential 740-plus horses pushing the 2017 Shelby GT500 down the highway.
Beyond what is known, no models have been discovered as recipients for the upgrades, while said upgrades may not be ready in time for the 2016 model year’s start.
I'm not sure the race to 750-hp is really necessary, but cool to hear the 5.7 may get DI.