blk/slvr02ss

iTrader: (21)

GM was going to go w/a DOHC motor but they put 2 Vettes w/ different motors 1 as a LT4 and he other w/a LT5 (ZR-1) and let the big wigs drive both cars w/out telling them which car had which motor and in the end they all picked the LT-4 Vette so the designed the LS-1 and stayed w/ the pushrod motor.

RPM WS6

iTrader: (3)

Agreed.

Which is why I can't understand how anyone can be excited about the possibility of the next generation of LSx's being smaller displacement. There is a thread going in the Auto News section about the "LS5" being a 5.5L to replace the current 6.2L. I don't see this as a good thing for a street engine, yet some seem to like it. I do understand the benefits of a smaller displacement/lighter rotating mass engine and the potential for higher rpm operation, and how this can be desireable in certain race applications. But I don't see that being more desireable than a larger displacement engine that makes more power and torque at lower rpms for a factory street motor.

Like I said in the other thread, I'd like to see the LS3-replacement debut with 6.5L, not 5.5L.

theskitztikwon

iTrader: (18)

well a 5.5 is better than a 3.8 gm was or has been talking about not putting a v8 in the 6th gen camaro

ULTIMATEORANGESS

iTrader: (4)

based on how well LS motors perform and their efficency and cost its hard to make a case to change it now.

Latch

iTrader: (8)

...Where do people get this **** from?

GM was considering not offering a Camaro with a V8? On what planet?

71novaguy

iTrader: (2)

I'd rather see solenoid operated valves than DOHC

ScreamingEagle

iTrader: (3)

I want about 7L with 650ish horsepower and around 35mpg highway. They can build it, the Z06 isn't far off.

06 6.0 GTO

Buy a Z06.
Get some low rolling resistance tires, keep them over inflated.
Set up a nitrous system or if you dont want spray set up some sort of a turbo or twin turbo system.
Tune in a lean cruise.
Reduce weight.
Lower car.
Improve aero in a few ways.
Reduce weight.

And with that you should be pretty close, i can see how C6 vettes can easily get over 30mpgs since i get almost 30, sometimes right at 30 or rarely slightly above on the highway, and the vette has 1000 less pounds, longer gears, and better aero.

Camaro_94

iTrader: (5)

Keep them the way they are.. Dont **** with perfection.

elias_799

iTrader: (8)

maybe the old ones are, but some of the new 4v ls heads i have seen a pretty nice

i don not understand why people just judge cylinder heads by flow, what about port velocity...... ?

cutlass_455

iTrader: (2)

Dont get me wrong here but, the new 5.0L is rated at 412HP, if you do some reading online and in the magazines out there, Ford is supposedly flat out lying, 1960's style, about this. Its been pegged at near 500HP at the crank.

I have been a GM guy all my life and owned one Ford and trust me, I will never make that mistake again. I hated it, I hated the dealerships, I hated working on it, I hated when I contacted Ford themselves, I hated the parts guys...hate hate hate. I LOVE the LS engines, especially the LS3, but Ford has FINALLY figured out this mod motor with DOHC. This thing is a monster. That new Mustang is an unbelievable package....styling, power, interior, mileage. Now just wait will they come out with the 6.2L version in the trucks.

Also, I see no one has mentioned GM's new Gen V V8s that will be hitting when the new 1/2 tons come out in 2014.

http://www.allpickuptrucks.com/blog/...ciency-e85-use

All aluminum and 'all new combustion system'. This means direct injection, IMO. Ford flat out said when the new 5L came out that it was designed for direct injection, so theres more in the that engine then there is new.

GM makes push rods work because they put the R&D into the engines, so when the new Gen V comes out I think itll be a road marker in the timeline of engine development.

slow

iTrader: (7)

On the 5.0 vs LS3, the power "ratings" the ls3 makes more. In real works applications, lets say the 2 motors make very similar power numbers. The new 5.0 is not making 500 hp at the crank, stock. Our car stock puts down 365 or so. (2011 5.0 mustang automatic on a dynojet 224xLC) Our stock Stock 2010 Camaro LS3 puts down about the same numbers on the same dyno a year before. I cannot compare to a stock automatic, since the camaro automatic gets the l99 not a ls3 and makes far less power then the mustang automatic. The Camaro also has the IRS to suck out extra power.

The Ford 6.2 in the trucks is not the same engine, we're talking about a 2 spark plug per cylinder engine vs a single spark plug engine (far more technical differences, but a good way for the average person to know the head design is not the same) The 6.2 I tuned 3-5 months ago had good torque gains for a F350 superduty application on 87 octane.

To my knowledge the 5.0 was targeted for direct injection, but ford was able to meet all of the performance goals on conventional injection, which is better imho, it makes adding larger injectors and fuel pumps a simple parts bin excercise for performance shops, vs trying to figure out what bosch high performance units could be sourced from porsche and audi applications to support increased performance. (at a far higher cost than a $200 fuel pump or $400 set of injectors)

Ryan

RPM WS6

iTrader: (3)

This is just simply wrong.

As stated in the post above (and everywhere else you look where 5.0s have been dynoed or raced), their factory rating is pretty close to accurate.

Xtreme864

iTrader: (15)

A DOHC LS motor??? Why don't they just go ahead and throw VTEC on it while their at it, and while you're in there, might as well chop 4 cylinders off so we can mod our cars to be JDM AZ *** just like all the other cool kids??

I'll keep my pushrods, thanks.

bearcatt

iTrader: (41)

Here are a bunch of various OHC, DOHC, OHV engine designs from the past.

http://www.museumofamericanspeed.com...LLThumbs.shtml




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bearcatt

iTrader: (41)

Duplicate post please delete ..........




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97lt1stangstomper

iTrader: (11)

have you seen the new ford motors 4.6,5.0 they basically copied the ls intake design cause it flows better then there past intakes ive seen ford magazines say good things about the ls1

WSsick

iTrader: (13)

VTEC = variable valve timing

you know know there are LS based engines with VVT, right?

WS6 Rampage

iTrader: (3)

... LOL!.... Yup! ... +1

Brian'sCharlotte(TA)

iTrader: (2)

I suspect the next question would be:

Who makes more power with Forced Induction?