LS1GMCTruck

iTrader: (2)

As We Know Them. Beginning in 2013, GM will convert to a direct-injection LS "type" V-8. I believe Orbital Engine Co., out of Australia originally invented the combustion chamber injection system, that they have been licensing to all the motorcycle, outboard motor, snowmobile, etc., manufacturers in recent years. Maybe GM has taken them on as well? Anyone know the details of these new DI GM LS engines?

RPM WS6

iTrader: (3)

They may not be issued from the factory in new production cars, but they will still be produced, via GMPP at least, just like the old SBC and BBC is still being produced.

Great engines never go away.

V68Sweep

Doesn't direct injection produce more power than traditional?

JHL88

typically yes

TransAmWS.6

The size of the LS motor market as a whole is mind-boggling. I can for sure still see LS motors being produced through the aftermarket for years to come. However, from the factory, I have a feeling that we aren't going to see anymore motors like the current big hitter 7.0 LS7's, 6.2 LS3's, etc., etc. for a good while.

LeanPocket

iTrader: (6)

think they'll keep the pushrod design?

why87

i highly doubt it, vvt with ohc seems to be the way to go anymore. i'm going to keep repping the old pushrod though

Old Geezer

iTrader: (3)

Inj psi at 10 bars, afr at 45:1....

RPM WS6

iTrader: (3)

I'm sure they will, at least for the first generation or two of DI small-block V8s. GM has committed a lot of dollars to OHV, and there are certain advantages of this design that can't be ignored.

Nowhereman

I say bring it.
The Ford SOHC was one Hell of a motor.
Way before it's time.
Dump the push rods and rockers.
SOCH or DOHC Hemi heads make **** loads of power throughout the RPM band.

ls1ya

iTrader: (2)

That got me nervous at first

SparkyJJO

iTrader: (11)

Oh great the "DOHC is better than crappy old pushrod" nonsense again...

RPM WS6

iTrader: (3)

I'd rather see Ford dump the extra cams, the extra complexity, the extra weight and larger external dementions of the OHC setups. Stick with push rods, IMO.

93Z2871805

iTrader: (5)

I believe he was referring to the SOHC 427 from the 60's (which actually was one hell of a motor), not the mod motors.

blade2222

I think gm is going with a push rod type engine with vvt like dodge did with the v-10 in the viper.

NVUSZ28

iTrader: (5)

This is a sad day, just like the day I found out they were no longer going to make F-Bodies

T-Top

I agree. And yea, maybe he was talking old school, not mod motor. ....hopefully...

6898camaross

Yea I read somewhere they were going smaller displacement to I think I seen like a 5.5L idk maybe someone can shed some light on that for me?

Nowhereman

I was.
The 427 SOHC can still be purchased if you got lots of coin.
It was an engineering masterpiece for it's time.
They also produced a 429 Hemi that a lot of us in the late sixties and early seventies would of killed to own.
I am a GM guy over Ford any day of the week but, I will give credit where credit is due.
Push rods are a limiting factor in engine performance.
They still work great but, if you had to design a motor that would make power past 10,000 rpm, you wouldn't be looking at push rod design.

wav3form

iTrader: (1)

With the great horsepower GM pushrod engines are producing, you're not making a very good argument.