hellz_wings

iTrader: (2)

I know it's a bit premature, but hey, we can all dream, right? It's not the top of the line most powerful engine that chevy has ever produced, not by far, but it's very capable, and technologically speaking probably their most advanced engine yet, here it is:

http://www.thetruthaboutcars.com/201...chevy-lt1-ftw/

The block dimensions are probably different from that of an LS engine, so in terms of mounting it in, say, a Spohn or UMI k-member might be different and require new custom mounts or something.

What are your guys' thoughts?

Zach/90\irocZ

iTrader: (6)

think the only issue would be supplying.... the fuel as with direct injection requires alot higher fuel pressure fuel pressure is something like 500ish psi at idle and 1000ish driving..... i drive direct injection v6 in my cts trottle response is amazing..... compared to conventional v6..... so i cant imagine how a v8 would feel like..... only thing i dont like is due to high fuel pressure you always here them clicking which is normal and will get use to it..... and prob have to replace entire fuel line setup as i dont know whats the max fuelpressure thirdgen lines would be able to handle 2000+ psi ...

http://fastlane.gmblogs.com/2012/10/...-fuel-economy/

http://www.streetlegaltv.com/tech-st...-small-blocks/

http://www.streetlegaltv.com/tech-st...em-really-new/


LT1 6.2L V-8 SPECIFICATIONS

• Engine type: 90-degree V-8 with overhead valves; continuous VVT
• Displacement: 6.2L (376 cubic inches)
• Bore x Stroke (in): 4.06 x 3.62
• Cylinder block: Cast aluminum with nodular main caps
• Main bearing fasteners: Six, including two cross-bolts per cap
• Crankshaft: Forged steel
• Connecting rods: Powder metal, 6.125 inches in length
• Pistons: Eutectic aluminum alloy
• Compression ratio: 11.5:1
• Cylinder heads: 319-T7 cast aluminum with 59.02cc combustion chambers
• Valve angles (degrees): 12.5 intake, 12 exhaust
• Intake valves: 2.13 inches (54mm) hollow
• Exhaust valves: 1.59 inches (40.4mm) hollow sodium
• Camshaft: Hydraulic-type with tri-lobe for fuel-pump drive
• Camshaft lift: 0.551-inch (14mm) intake / 0.524-inch (13.3mm) exhaust
• Camshaft duration: 200-degrees intake / 207-degrees exhaust (at 0.050-inch)
• Lobe separation angle: 116.5 degrees
• Fuel delivery: Direct-injection
• Intake manifold: “Runners in a box” design; composite construction
• Throttle: 87mm electronically controlled throttle body
• Ignition: 58X with individual coil-on-plug and iridium-tip spark plugs
• Horsepower: 450 (estimated)
• Torque – lb.-ft: 450 (estimated)
• Max. engine speed: 6,600 rpm (fuel cutoff)

hellz_wings

iTrader: (2)

I think the highest fuel pump we have is from walbro is 255LPH? That probably wouldn't flow enough fuel for that much pressure. That seems like alot of pressure.. Don't our TPI engines run 42 to 60psi or so fuel pressure, most being at 42psi?

Zach/90\irocZ

iTrader: (6)

yea your right fuel pressure is around there every car different but its between 40-50psi depending on your setup of course

but you would have to totally redo a thirdgen fuel system to hold 2000psi
thats why you hear the clicking sound because of that

i think max psi 255 can put out is like 100 to 150psi i could be wrong

cIaRmOaCrZo

just use a high pressure pump like the eco tech's have driven from the camshaft, while still having in tank pump just for volume and supply. that engine should have a high press pump mounted to it, or near it so you dont have to replace the entire fuel lines.

paul_huryk

As with anything new, if you decide to swap it, expect a boatload of issues getting everything to work correctly.

And it will take a few years before the aftermarket gets enough parts out there to outpower the LS3, which can get 570hp with some readily available parts, rather cheaply.

hellz_wings

iTrader: (2)

The only advantage this engine has over the basic LS3 engine is probably slightly more power out of the box, and that it has some technology goodies that make it more fuel efficient and potentially more reliable.. Other than that, a good LS3 slightly modded would probably be much cheaper it seems.

Zach/90\irocZ

iTrader: (6)

yea i know you would have to use highpressure pump

you have a valid point there i totally miss that there ran by the camshaft
im still thinkin convetional in tank pump lol Blonde Moment

http://shop.justparts.com/ComparePri...%2bFuel%2bPump

yea wont be for along time before aftermarket catches up

i think you can achieve same results on a well Tuned LS Engine with supporting Mods and assuming you dont have a Brick for a foot for MPG reasons

hellz_wings

iTrader: (2)

True about the pump in the manifold (or under it). A well tuned LS engine is good, but spending all that money and you still have "only" an LS2, not the newest gen 5 SB... That is something to brag about right there lol..

And about the heavy foot.. Well, what can I say, we drive fast cars

Zach/90\irocZ

iTrader: (6)

Direct injection is only used to improve Efficiency and Broaden the powerband and to produce more low end grunt and to be more responsive

all care makers have to meet CAFE Standards and hence the push towards direct injection and smaller turbo engines so the can increase overall fleet MPG goal

and i think its 30 something MPG for 2012
think its 53 MPG By 2025

http://en.wikipedia.org/wiki/Corpora...e_Fuel_Economy

think i just went into geek mode lol sorry just car crazy

Zach/90\irocZ

iTrader: (6)

yea that would be some braging rights on front of magizine covers etc etc lol

hellz_wings

iTrader: (2)

If they keep the chevy volt does that count in the overall fleet MPG? lol.. if so, add a few more electric models and the small block chevy will never die lol

Zach/90\irocZ

iTrader: (6)

thats one of the reasons why they decided to produce that so they can boost there average and still be able to produce cars like ZL1 and ZR1

and food for thought 2013 zr1 on cup tires if im not mistaken just broke record for fastest production car time around laguna seca guess who zr1 went against 2013 dodge viger lol

i think a 12 ZO6 on cup tires is top 5th overall fastest time on laguna seca not sure what spot


http://autos.yahoo.com/news/top-10-f...005651411.html


http://www.fastestlaps.com/tracks/laguna_seca.html

http://www.motortrend.com/roadtests/...srt_viper_gts/

Nurburgring ring track times note some have none stock tires
http://en.wikipedia.org/wiki/List_of...eife_lap_times

Pocket

iTrader: (24)

External dims are very similar to a LSx engine, so physically fitting it doesnt seem much of an issue

Fuel wont be much issue either as its cam driven mechanical fuel pump does the heavy lifting so to speak. A generic in-tank pump like a walbro 255 will suffice for t6he swap

Exhaust options will have to wait for the aftermarket to catch up or be custom. With the I & E valves reversed from LSx, the pattern is unique and since the Corvette is the only application for atleast the first year, manifold options will be limited

Wiring will be no different from any other EFI swap

Biggest hurdle will be the ECM/PCM whatever Delphi specifies. The GM parrots like to claim it's uncrackable, which means it will take a little while for the aftermarket to crack it and a little longer to relearn the tuning process

Some things may be simplified if GM chooses to release a "hotrod" package like the E-rod LS3 kit as these include the hard to acquire parts already designed for a conversion. Then you can order a GM computer and your left with custom mounts, exhaust and wiring

Do I see this is feasible? Yes, in time

kad5118

chevy is making huge news today, revealing most all of the details about its new, fifth-generation Small Block V8 engine – dubbed LT1 – the very mill that will power the upcoming 2014 Corvette. Note that we'll be updating this post all morning as the information keeps streaming in, so check back often.

Preliminary numbers suggest no less than 450 horsepower and 450 pound-feet of torque.
The Corvette's new LT1 V8 engine is, no surprise here, set to make the car very competitive within its class. Preliminary numbers suggest no less than 450 horsepower and 450 pound-feet of torque for the 6.2-liter engine, as well as an estimated 0-60 mile per hour time of less than 4.0 seconds when installed in the base C7. To put those numbers in perspective a bit: The LT1 not only has a far higher specific output than the 6.2-liter LS3 that it replaces – up at least 20 hp and 26 lb-ft – but its torque is seemingly competitive with that of the 7.0-liter LS7 that lives in the heart of the current Corvette Z06.

With all that power and accelerative performance, Chevy engineers are still keeping fuel economy in mind – with the help of cylinder deactivation, the new Corvette powerplant is expected to deliver more than 26 miles per gallon on the highway, though figures for city driving are still unknown. The new small block also benefits from the latest advanced engine tech like direct injection, continuously variable valve technology and a relatively high 11.5:1 compression ratio, all while coming in a claimed 40-pounds lighter and four inches shorter than the 4.4-liter twin-turbo V8 by BMW. Chevy also notes that while premium fuel is recommended, it is not required with the LT1. We're also told that a dry sump oil system is optional (a traditional wet sump unit is standard).

GM is calling the LT1 its most advanced combustion system ever. The company analyzed literally hundreds of systems to get to this final product, including crunching over 6 million hours of CPU time dedicated to combustion system optimization, and nearly 10 million hours when combustion, structure, cooling systems, lubrication and vent systems are factored in. In fact, the motor and its systems are so advanced that an academic SAE paper is being written to explain the whole shebang. The engine will also be built at the company's 75-year-old Tonawanda plant, which happens to be where Chevy's original small block V8 was produced way back in 1955.

There is a load of detailed information from GM, in our gallery of slides from the presentation this morning. Please excuse the lowish quality of the images here – we decided to err on quality in favor of bringing you all of the LT1 info we could, as fast as was possible.

what do you think this new motor

cprmn14

iTrader: (3)

What are they doing for ignition?

Edit: scratch that, just looked at the pic

kad5118

thats a good question i would assume a better verson of the current coil packs.to me they look like the same coil packs just a little bit smaller.this a bad *** engine

Pocket

iTrader: (24)

Coils look like current LS3/9 versions which are quite powerful in their own right

Hadnt seen the LT1 will replace the LS3's in the base 'vettes before. Now I wonder what was in store for the higher trim 'vettes like Z06, Grand Sport, ZR1 etc. Another prototype engine platform or something LSx but nasty in its own right?

Just notices the bellhousing bolt pattern is different from the classic SBC pattern... hmm

kad5118

they are suppose to bring out an 7 speed mannel and a eight speed auto for these engines.I guess the 6l80e is the new 4l60e.

ericjon262

Looks like it's just the top bolt, but it's tough to say.

johnsonjrml

Just reading my new hot rod mags this morning. Has anyone read about the new LT1 that G.M. is coming out with in 2014? It looks like its going to be great. 450 horsepower with better gas mileage due to direct injection. Now that would be a sweet crate engine.

five7kid

iTrader: (14)

Just so you know, if anyone posts about the new "LT1", I'm going to refer people to/merge it with this thread, rather than having threads all over the place about it.

The_Wraith

and GM continues to use pushrods..

novaderrik

..and GM continues to make better engines than everyone else.
not only do they make more power, but they also get a better mpg rating, weigh less, and take up less space under the hood than a comparable OHC engine design..
you can bitch all you want about the pushrods, but they are cheap, easy, and just flat out work. GM learned that OHC wasn't the future of their V8 engines with the LT5 that was put in ZR1 Vettes in the early 90's..

The_Wraith

Not really. GM has built a ton of junk.

Well its no wonder GM went **** up. While the rest of the world goes to OHC GM continues to use pushrods.

You mean because they couldn't properly design a reliable V8 OHC engine like Ford? Let's assume for a moment your outlandish statement above is true, then what does that say for the engineers at GM? "sorry folks we just can't design a proper OHC V8 so we are going back to OHV engines, sorry we just can't cut it" Are you aware GM has also continued to build the Northstar OHC V8 for quite some time now? Which took them over 10 years to make somewhat reliable.

The only thing that isn't the future is GM itself.

five7kid

iTrader: (14)

Pushrod engines are more compact than OHC engines. The Vette has a low hood profile, so as long as it remains front engine, they will use compact engines. Maybe someday they'll go mid-engine, but until they do, expect pushrod engines.

I'm more upset that they recycled an engine designation that has already caused confusion by having been used twice in the past. THAT is just plain stupid.

25th327RS

iTrader: (2)

^ agreed, no reason for 3 different lt1 designations for 3 completely different engines.....

ericjon262

I don't see why they haven't updated to canted valves, with the 4" bores, you could get silly ridiculous flow numbers.

Tinbender59

great idea!!!!

Tinbender59

Chevy vs Ford which is best, that is a real good question, to some it is Chevy hands down - IE this forum, Chevy haters Would you please excuse yourselves, to some it is Ford. I cut my teeth on Chevy 327's My first engine build was a 327. therefore I like Chevy, some were nursed on Ford's, there fore they like Ford. people it is all rellivent, I tried to purchase a 2006-7 Mustang, I just couldn't get past the feel of the firing order, it aint a Chevy, could not convince my sub-concience mind that it was ok LOL. now a shocker I heard that the LS series motors are a "FORD" design, surely GM wouldn't stoop that LOW???? any way please dont bash GM on a GM Forum , that is low low class dude

Tinbender59

bashing Chevy's on a GM forum would be like going into a biker bar and bashing a Harley Davidson, good luck with that one

Flip 2

iTrader: (1)

Upset with GM?!
I'm upset that the principles of the latest "LT1" took so long to see the light of production.
'98 C5 6 speed was rated at 28mpg... so what do they do? Put more displacement and more weight on their vehicles... screw chasing fuel economy, until 15 years (and a bailout) later. They could have led the way.

Tinbender59

Torque is where your millage is at, not Horse power, and NO ONE wants to talk about their Torque numbers, they want to talk HP, so GM gives the masses what they want, it is an absolutely brilliant marketing strategy if you ask me

The_Wraith

Telling the truth about Chevy on a Chevy forum is not bashing. Cost cutting GM is not the manufacturer of choice anymore. The way things are looking Ford will be the number 1 American auto manufacturer with Chrysler in second. Both of those companies have very nice lineups across the board. GM has squat and the crappy sales numbers to prove it.

GM hasn't given the masses what they want in a few decades. Look at the market share drop from the 1950s till now.

kilrfuk

The new LT1 DOES have a high pressure fuel pump under the intake manifold run by the cam. Check out the article and vids in the link.

http://www.chevycorvette.com/c7-corvette

tcrisp

did anybody watch the car auction and see the new vette. did it have a new style of engine ,because i saw it say 2014 vette with a lt 1 .

lunati397

thats right a LT1 its direct injection like a diesel

lt1 LS6 ect were around in the 60s then they came back and they are back again



The 2014 Chevrolet Corvette is scheduled to hit the market late next year, and Chevy has given us a preview of its brand new engine. The automaker has said that its goal with the 2014 Corvette is to raise the bar in terms of performance engines. It also wanted to focus on fuel economy, while not sacrificing the raw power that Corvette fans expect. It's now been revealed that the vehicle is going to come off assembly lines with a 6.2L V-8 that is able to deliver an estimated 450 horsepower and 450 lb-ft (610 Nm) of torque.

Corvette LT1 V-8 complete engine
Corvette LT1 V-8 complete engine
Corvette LT1 V-8 complete engine
Corvette LT1 V-8 complete engine
View all

While final numbers will not be available until early next year, Chevy estimates that this will be the quickest Corvette ever, with a 0-60 mph (96.5 km/h) time of under four seconds. The automaker also predicts it will be the most fuel-efficient Corvette, with a higher EPA estimate than the 2013 model's 26 mpg (9 l/100 km) highway.

Chevy added a direct injection fuel system, active fuel management and variable valve timing systems, all of which help generate more power across the entire power band, instead of focusing only on top end. As an added bonus, the direct injection system should also help reduce emissions.
The Corvette LT1 V-8 oil pan and windage tray

The Corvette LT1 V-8 oil pan and windage tray

The company is also introducing an all-aluminum block and oil pan. This is intended to drop weight, increase rigidity, and help the engine better absorb vibrations. To go along with this, Chevy is also adding iron main bearing caps. These are stronger, and they help produce a quieter ride without sacrificing performance.

Some other features of the Corvette's new engine include an improved cooling system, continuously variable camshaft timing, cylinder deactivation, cam-driven fuel pump, and an improved oiling system.

Chevy is certainly pulling out all the stops for the 2014 Corvette, and if this engine actually surpasses 450 horsepower, we will be thoroughly impressed.

zraffz

It's an opti spark LT1 lol!
No, it's a new style LSx. It's got a bunch of fancy stuff that will surely have recalls.

lunati397

cam driven fuel pump can you say 20 to 30 thousand PSI

Diesels run 25 to 35 thousand psi from a direct drive pump

TTOP350

iTrader: (8)

Thread locked in T minus 5-4-3-2...........

Guest

Not yeeeeettttt. How about swapping this in a thirdgen? Any word?

Phenom-1

450HP and 450 lbs Torque in a Revamped LT1 that has almost nothing in Common with the LT1 that you and I know of that was made out of Cast Iron and came in the 4th Gen F-body and the Vettes.

this New LT1 is Basically an LS3 with tweaks and Oh Yeah It's gonna be Awesome, maybe I'll forget about getting a C6 and instead aim for a New C7.

I like the design, It's a little bit like the Love child of The Viper and The Camaro because it looks like the Viper on the Front and It's Scary Close to the 5th Gen Camaro on the Rear.

RaverRacerX

1) the current power ratings are estimated. not SAE. we will see SAE numbers sometime in the spring.

2) the LT1 shares literally all of a few bolts with the LS series, nothing else

3) the block itself is more of an evolution than revolution with an all aluminum deck and the iron liners below that.

4) the heads are WAY ahead of the LS3 heads. splayed valves that are at a shallower angle with better intake and exhaust runners.

5) the pistons are basically sculpted awesome designed to direct the fuel charge to a specific spot in the cylinder.

6) the CVVT and future CVVTVL (continuously variable valve timing and valve lift) are absolutely insane on this new motor which will make donkey dick cams obsolete. apparently, the top tier models will get a cam in cam setup similar to the Vipers.

kad5118

well put this motor is ahead of its time.I just cant wait until the vortec versions of these motors,will start appearing in all junk yards.

ericjon262

anyone else notice the balancer has room for a second belt... and it looks like a 10 rib...

it also looks like the belt is double sided...

Veaceonee

iTrader: (1)

I would say that is for a supercharger setup..IMO

Zach/90\irocZ

iTrader: (6)

missing powerstering pump etc most ls series engines run a 2 belt pulley system i think its the same with this new evolution of a engine

this is just a display engine not a fully drop in im assure theres more clutter to added to the front lol

Zach/90\irocZ

iTrader: (6)

i agree its really stupid reusing LT1 Designation millions spent and thats the best they could do lol

1st GEN LT1 1970–1972 350cu in V8 was carb IIRC was used in Corvette and Camaro Z28, so had a short production run, depending on what year power was from 350-250hp, wide range in power est. was prob due to the start of emissions and gas embargo that started in the 70s and invasion of imported cars

2ND GEN LT1 late 1991-1997 350cu on fuel injected reverse flow coolant, sucky opti spark, was rated around 300hp,
*LT4* where in special version camaro firebird but basically high outout LT1 think was rated 20-30 above regular LT1

3rd GEN LT1 2013- And Beyond look in above post for specs

not a real good track record for the LT1 maybe the reused designition to bring goodness to the LT1 name

but really GM

hellz_wings

iTrader: (2)

Agree I don't like when they re-use old code names for engines and such.. It can be confusing when looking for engine parts on Ebay for example..

Zach/90\irocZ

iTrader: (6)

some people dont know and just list LT1 parts for sale and its confusing see it all the time on craigslist