2008 LX and LY models: Features and Changes

[ResumeSpeed]

Originally Posted by DaveW68

Somebody can correct me if I'm wrong here, but from what I understand, the 6.1L hemi already has VVT and is one of the 1st ever to offer it in a push-rod engine. I understand that's how they push so much power from these engines and why they rev so nicely. It only makes sense that it would eventually trickle down to the 5.7L hemi. I've heard rumors of the 6.4L hemi having 525+ hp, but that figure seems kinda high unless they make some major changes to the way the engine breaths or offer some sort of forced induction. My guess would be more like 450-460 hp NA at the top end. The 7.0L Z06 is only pushing 505 hp and that engine breaths waaayyy better than ours do. Even the Viper's 8.3L engine is currently pushing just a little over 500 hp.

No vvt on the 6.1 engines...

The 6.4 crate engines (392) put out 525-540hp...

The new 2008 Viper 8.4 with vvt is rated at 600 hp...

[DaveW68]

No vvt on the 6.1 engines...
That's not the way I understand it. I've heard that the current 6.1 hemi is one of the only push rod engines in history to offer VVT. That's why it performs as well as it does. I guess we could ask this question of the SRT engineers during the next session to confirm it.

The 6.4 crate engines (392) put out 525-540hp...
I'll believe it when I see the dyno. It just doesn't seem possible out of a NA push rod engine.

The new 2008 Viper 8.4 with vvt is rated at 600 hp...
I was referring to the current 8.3 ltr Viper, not the one that is yet to come.

[ResumeSpeed]

Originally Posted by DaveW68

...I'll believe it when I see the dyno. It just doesn't seem possible out of a NA push rod engine.

392 Hemi - 525 hp @ 6400 rpm & 510 ft-lbs @ 5200 rpm

Originally Posted by DaveW68

...I was referring to the current 8.3 ltr Viper, not the one that is yet to come.

Production launch is just a few weeks away...

[DaveW68]

Originally Posted by ResumeSpeed

392 Hemi - 525 hp @ 6400 rpm & 510 ft-lbs @ 5200 rpm



Production launch is just a few weeks away...

Is that dyno of a NA 6.4L engine? If so, that is very, very impressive. I wonder what they did with the internals to generate that kind of power? It just doesn't seem like it should be possible in a NA pushrod engine of that displacement. That engine must be sucking air like a mutha and the exhaust must be wide open. Not to mention some serious tweaking of the computer that we don't get in our 6.1's. And the torque figure is also very impressive. I can't wait to drive one when it comes out.

[ResumeSpeed]

Originally Posted by DaveW68

Is that dyno of a NA 6.4L engine? If so, that is very, very impressive. I wonder what they did with the internals to generate that kind of power? It just doesn't seem like it should be possible in a NA pushrod engine of that displacement. That engine must be sucking air like a mutha and the exhaust must be wide open. Not to mention some serious tweaking of the computer that we don't get in our 6.1's. And the torque figure is also very impressive. I can't wait to drive one when it comes out.

• Available in Three Versions:
– Aluminum Single-Plane High-Rise Intake Manifold with Holley 870 cfm 4-bbl Carburetor (540 hp)
– Barrel-Shaped Tuned-Runner Intake Manifold with 80 mm Throttle Body for Electronic Fuel Injection (525 hp)
– Hemi Long Block Crate Engine
• Deep-Skirted Cast Iron Block with Cross-Bolted Mains
• Bore: 4.055"
• Stroke: 3.795"
• CNC-Ported Aluminum Twin-Plug Cylinder Heads
• Stainless Steel 2.100" Intake and 1.600" Exhaust Valves
• Ovate Wire (Beehive) Valve Springs
• Competition Viton Valve Stem Seals
• 279°/285° Hydraulic Roller Camshaft with 0.584” Intake and 0.552” Exhaust Lift
• Forged Pistons
• 10.5:1 Compression Ratio
• 4140 Forged Steel Crankshaft
• 4130 Forged Steel 6.200" I-Beam Performance Connecting Rods
• SFI-Approved Competition Crankshaft Damper
• “Plug-and-Play” Wiring Harness
• 80 mm Manual Fuel Injection Throttle Body
• Premium Tri-Metal Performance Engine Bearings
• Precision-Balanced Rotating Assembly
• Distributorless Coil-On-Plug Ignition System

[ResumeSpeed]

Originally Posted by DaveW68

...It only makes sense that it would eventually trickle down to the 5.7L hemi...

Actually, it's the other way around. The 5.7 Hemi was developed first, the 6.1 was derived from the 5.7.

[DaveW68]

Originally Posted by ResumeSpeed

Actually, it's the other way around. The 5.7 Hemi was developed first, the 6.1 was derived from the 5.7.

I was referring to VVT, which I believe the 6.1 currently has & the 5.7 doesn't.

[Hemidakota]

Originally Posted by ResumeSpeed

392 Hemi - 525 hp @ 6400 rpm & 510 ft-lbs @ 5200 rpm



Production launch is just a few weeks away...

He is correct...in fact there two more variants under testing as we speak. Other interest is the VCT and ISD....

VCT = Variable Camlobe Timing

ISO = Idle Shut Off

[thematrixhasu]

OK i understand that chrysler has learned there lesson on showing the next years model in the middle of the current years run but its a week from july no one knows what the 08 looks like. This is crazy can we get some info please i got 80000 miles on my 05 C but i want to see what the 08 looks like or wait till the new engines on the 09 I just heard from my inside source that the 2010 300c will have a hybrid to its second gen hemi and get around 27 city 30 highway, there putting them on the aspen/durango right now for 2009 with 23 city and 27 hwy but it will leak down with alittle better proformance due to no towing on the cars for 2010

[limeyg]

I have a 300 LTD which has been a great car for me and so i am looking at getting the same car only a 2008. My sales manager sent me the specs and colours on the 2008 and was a little dissapointed to find out that anything below the c is going back to a 4 speed automatic from the 5 that has been fitted to all models for the past couple of years