GM's new motor series ..the LT1 ??

[Grayeagle]

http://www.streetlegaltv.com/tech-stories/engine/breaking-news-chevy-gen-v-small-block-reveal/?utm_source=rss&utm_medium=rss&utm_campaign=breaking-news-chevy-gen-v-small-block-reveal

(competes for the longest link ever

Apparantly the new LT-1 will be in the C7 Vette.. similar displacement to the LS1, 450hp, 450ft lbs torque, completely new motor, doesn't even share most of the bolts.
I wonder what the crate motor versions will be like ..
..and what Nelson Racing Engines will do with them

-Frank aka GE

[CAP1]

http://www.streetlegaltv.com/tech-stories/engine/breaking-news-chevy-gen-v-small-block-reveal/?utm_source=rss&utm_medium=rss&utm_campaign=breaking-news-chevy-gen-v-small-block-reveal

(competes for the longest link ever

Apparantly the new LT-1 will be in the C7 Vette.. similar displacement to the LS1, 450hp, 450ft lbs torque, completely new motor, doesn't even share most of the bolts.
I wonder what the crate motor versions will be like ..
..and what Nelson Racing Engines will do with them

-Frank aka GE

 how much lighter will the c7 be than the current vette?

[Shuffler]

The new low slung heads and oiling system is interesting.

We've been talking about this on the camaro boards.

[Big Rat]

Please, please, please, don't bring back the optispark   .  I still doubt anything new will have the flexibility of the current LS, but time will tell.


 
BigRat

[CAP1]

Please, please, please, don't bring back the optispark   .  I still doubt anything new will have the flexibility of the current LS, but time will tell.


 
BigRat

now ya know>? a chevy forum i used to talk on, they couldn't understand why i(a guy that works on this crap for a living) hated/loved that system.
 i hated it, 'cause it was/is stupid. i loved it, 'cause i made great money on it.

[Captain Virgil Hilts]

Hyper-eutectic pistons, and powdered metal rods ..............   

Odd ball sized valves ........ 

A seven speed manual transmission ................... 

Direct injection ......................     (because we don't have a puking smiley)

Entirely too much excessively expensive "gee whiz" "trick of the week" Bravo Sierra, making it absurdly expensive, and ludicrously unreliable.

And I've been a Chevrolet guy for decades.


There are so many things they could do so much better.

[FBDragon]

I hate my LT1!!!!  I been through 3 opti sparks so far and it's down again!!! Thats what Pontiac gets for getting rid of all thier V8's. Chevy engines suck I never had any good luck with them at all!!! Gonna use mine for a boat anchor once I get a real Pontiac engine in my T/A. Butler performance builds Poncho engine that embarrass almost all Chevy V8's, I did say almost.  Hope this new "LT1" does better!!!!

[icepac]

Direct injection is how you pass emissions with enough cam overlap to support big horsepower.

[Shuffler]

Powdered metal will not be a problem in my opinion. Sintered metal is used alot in gears.

We have laser cut sheets of it for oddball parts.

The high pressure fuel pump will be cam driven and under the intake. Presumably to cut down on it's noise. Odd place but ok.

Direct injection works great on diesels and you can push a lot of power out of them.

Definitely a wait-n-see on this engine.

[CAP1]

i wouldn't call 450hp from a 6.2 liter "big horsepower", considering that the stock 5 liter in the boss302 is 444 this year, and next years will be 450.

[Shuffler]

i wouldn't call 450hp from a 6.2 liter "big horsepower", considering that the stock 5 liter in the boss302 is 444 this year, and next years will be 450.

Yup but they say "at least".

[CAP1]

actually, they didn't say "at least", but rather "estimated".

[morfiend]

 I dont have a dog in this fight,chev VS ford but this new motor looks to have far too many machined surfaces that will require a gasket and or sillyputty. IMHO it's a leak waiting to happen.

   Some of the ideas though I like,direct injection is definitely the way to go. I think we should have more diesels on the road so what do I know anyways.....



   

[CAP1]

I dont have a dog in this fight,chev VS ford but this new motor looks to have far too many machined surfaces that will require a gasket and or sillyputty. IMHO it's a leak waiting to happen.





   

 kinda like cadillacs? from the factory with coolant sealer in em?

[Captain Virgil Hilts]

Direct injection is how you pass emissions with enough cam overlap to support big horsepower.

A. It does not make "big horsepower".

B. With less than 210 degrees duration on both lobes, and 116 lobe separation angle, overlap is not a problem.

C. Direct injection has resulted in massive problems with carbon/sludge build up in the entire intake tract, but especially the lower part of the intake, the intake port in the cylinder head, and the intake valves. It kills performance, and drives emissions thru the roof. I'm actually tasked with this problem as a contract tech for a major OEM.