Why did Chrysler add variable valve timing to the Hemi engine?
That’s probably why the MDS system has been so successful and trouble-free in these engines, but the original block wasn’t designed to include the variable valve timing ( VVT) that was the next step up in technology, so Chrysler had to redesign the block in order to update the engine in ’09.
What was the name of the first hemi engine?
Although this engine wasn’t referred to as a Hemi by name, it is largely considered Chrysler’s first-generation Hemi. During this period, Chrysler’s Hemi engine started becoming synonymous with power. Fast forward to 1964, when Chrysler debuted the 426 Hemi engine, the first to sport the official “HEMI” name.
What was the displacement of the Chrysler Hemi engine?
The first version of the FirePower engine had a displacement of 331 cu in (5.4 L) and produced 180 bhp (134.2 kW). Eventually, three of the four Chrysler divisions had its own versions of the FirePower engine, with different displacements and designations, and having almost no parts in common.
Where is the VVT groove on a hemi engine?
One is blank, but the other three will have a groove in the front, back or middle, depending on the application. Adding VVT to the HEMI engine required a new block that had three additional oil passages and an extended front cam bearing that allowed them to supply oil to the cam phaser through the front journal.
That’s probably why the MDS system has been so successful and trouble-free in these engines, but the original block wasn’t designed to include the variable valve timing ( VVT) that was the next step up in technology, so Chrysler had to redesign the block in order to update the engine in ’09.
What kind of exhaust system does a 5.7 Hemi use?
Not sure if there is anything like this but want to create a specific thread that contains all exhaust talk for the 5.7 application such as what brands currently produce systems that fit any V8 model or model specific (non SRT). Also if they are axle back or cat back.
One is blank, but the other three will have a groove in the front, back or middle, depending on the application. Adding VVT to the HEMI engine required a new block that had three additional oil passages and an extended front cam bearing that allowed them to supply oil to the cam phaser through the front journal.
How many cylinders does a Chrysler Hemi engine have?
Using VVT, Chrysler could advance the cam to increase torque under light loads so the engine could run on four cylinders at 70 mph and stay in MDS up to 40% of the time.