Gm brings back iconic name for engines. KEY is the advance in thermal manaement

[JB]

AAutomotive News
August 1, 2018



the real new and interesting update is the advance on thermal management..

forgetting about LT motors for a moment...many of us with LS motors can easily describe how performance is enchanced to be more consistant with better rudimentary thermal management attemots..

GM s breakthroughs to be released in this ad hoc labelling such as tri power for the 2.7 liter is clearly an indication of what will also be utilized for its highest performing platform v8 engines...

we should be preoared to be impressed with world class thermal managemet for the upcoming new engines for the c8..

interesting that when GM focusing on solutions they lead the indistry..

in the area of suspension and shock design even ferrari and arch rival ford also use mrc.


i envision many competitors will have to up their game in thermal manag,ent to stay competitive with corvette...

[JB]

Individual parts warmed and cooled to better control combustion is a tremedous advance that will be ignored by many but the consistent performance will far out shadow the slight increase in peak hp and tq..

everyday and even track performance will be impressive in its consistency..

https://www.caranddriver.com/news/gm...-pickup-engine

[Frenzy36]

Amazing dropping almost a full litre from the 3.6 engine and maintaining the same horsepower and torque.

[John]

I am old enough to remember when “TriPower” first came out. Thinking GM hopes it resonates again.

[John]

GM is good at transferring new/enhanced tech across its powertrain. Better thermal management would be a huge plus for not just power but fuel economy, for as we know, less than half of a combustion engines potential power is turned into actual power, the rest into heat.

I have heard that the LT1+ for the entry ME motor is going to have some refinements. We have thought of more power, to 500 HP+, but maybe some of that increased power is due to transferring more gasoline explosive energy into downstream power (as opposed to more heat that then needs to be managed). Unfortunately my inside source in the area of powertrain, is quieter than Rip Van Winkle during his 20 year sleep — so we are all going to have to wait longer.

[Shadow]

Since heat management is even more critical in a mid engine than a front engine car, hope their is some transfer of better tech from the TriPower new motors to the ME’s motors.

[dcbingaman]

I think this new 2.7L L3B DOHC Turbo I-4 for the Silverado is a big deal for GM and for Corvette. Whatever DOHC engine ends up in the C8 likely will pull a lot of technologies and some parts from this engine. There is a LOT to unwrap here, including thermal mgt., AFM, (on an I-4 ?!!), dual volute turbo, variable valve timing, all-aluminum construction, high compression ratio, etc. Conveniently, a V-8 version using this head on a new block would displace 5.4L, make over 600 HP and 700 ft-lb of torque. Here is a data table on this baby from GM:

[Mobius]

There are also the Caddy Turbo engines, that utilize the Hot V configuration. http://gmauthority.com/blog/2018/03/...lly-announced/

... the long-awaited Cadillac 4.2L twin-turbo V8 ... an engine that pushes out an estimated 550 horsepower at 5,700 rpm and 637 pound-feet of torque between 3,200 and 4,000 rpm in the 2019 Cadillac CT6 V-Sport

They seem to have solved the thermal management issue.

[OnPoint]

Interesting tech on the new engine. Looks like a nice step forward. But the name? I dunno. I own a classic 60s Pontiac muscle car - and "Tri Power" being used in this context makes me furrow my brow and lift an eyebrow (I can almost hear my Dad - who used to own my Poncho - reading about this new engine and muttering, "That ain't no Tri Power.") LOL.

[dcbingaman]

Tri-Power:

I had both a Blue 2004 and then a Red 2006 Pontiac GTO and loved them before I bought my C7. Corvette power with a back seat. They were re-badged Holden Monaros, but they were accepted (grudgingly) by the GTO community.

I attended the GTO National Convention when it was held in St. Louis in 2005 and got to see some REALLY nice GTOs from back in the day. My favorite was the 1968 GTO with a Tri-Power 389 V-8. Tri-Power referred to three 2-barrel carburetors on a special intake manifold, like in this picture.

Not sure what this has to do with a fuel-injected turbo I-4, but "Tri-Power" is a great brand name.......if you are in your 60's and 70's, LOL.

[OnPoint]

I only recently turned 50, but I helped Pops rebuild several Tri Power carbs (he owned multiple GTOs; restored them/flipped them as a side business). Actually, I really didn't "help" him much with the carbs. I mostly got in the way and helped him drink beer. I'm terrible at carb overhauls. . . . LOL.