The all-new Cadillac 4.2L Twin-Turbo V8 DOHC engine will not be used for racing purposes, reports GM Authority’s sister site, Cadillac Society.
The Cadillac-fosued outlet asked the engine’s chief engineer, Jordan Lee, whether motorsport engineering firms such as Pratt & Miller or teams like Wayne Taylor Racing are considering using the all-new DOHC V8 LTA engine for racing applications. His reply: “If they’re using it, I’m not aware of it.”
Cadillac has typically used torquey push-rod-style engines such as the LSA and LT4, otherwise knows as Overhead Valve (OHV), for its high-performance V-Series vehicles, while at the same time using variants of those engines in its motorsports efforts, namely the now-retired CTS-V.R that dominated the Pirelli World Challenge as well as the Cadillac DPi-Class racers that currently compete in IMSA. In that regard, the new 4.2L DOHC LTA engine, which is supposedly exclusive to Cadillac, might represent a change to that formula for future V-Series Cadillac offerings, but it apparently won’t be used for motorsport applications. Currently, the LTA is used in the 2019 Cadillac CT6 and CT6 V-Sport.
Cadillac Society also mentions that Lee might be pulling a fast one, since he also told the publication that even if he did know whether or not race teams were testing an LTA-based race engine, he wouldn’t tell.
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Comments
I know people have a hard time understanding, LTA will not be in a C8 Corvette ME period. Block/Cylinder heads/internals will be similar but not these same, turbocharger’s will be on these side, for corvette C8 ME. Displacements will be different. As for Cadillac Racing using these New LTA for racing yes, they will, he never said no.
I do believe you’re correct regarding the Corvette C8/ME… but I think there’s more to the story as it relates to the racing intentions for the LTA.
First, JdN has previously mentioned that the LTA will not be a “V-Series engine”. That was during his first year at Cadillac, and plans may have changed since then, so it’s hard to believe that the engine won’t be stuffed into the CT3/4 or CT5 for a full-on V model (not a V-Sport). But if the plans remain not to use the LTA for any full-on V-Series models, then there is no reason to go racing with it.
FORD made the hot V 4.2 V8 TURBO a winner at INDY in 1969 with Mario Andretti ! THE LTA is just the kind of design STANDARD of the WORLD is all about !
Wonder what the actual production engine will look like. That concept is very “pretty” and I hope that translates to production and it doesn’t end up with one of those cheesy giant plastic covers.
I don’t think that’s the “concept engine”… everything we’ve heard thus far indicates that the way it looks in the pictures is how it will look under the hood.
I wouldn’t expect to see some of the chrome pieces on the production engine. Perhaps “concept” isn’t the right word but we’ve all seen display engines at auto shows that are finished differently than what actually shows up under hoods. Obviously an engine on a stand at a show needs to be prettier than one that gets stuffed into an actual car and is seldom seen. My question is how much of what we see here cosmetically will be in the production engine. The valve covers are nicely done but appear to have a carbon fiber look. I hope at least that makes it to production and there isn’t a cheap plastic cover hiding everything like on CT6, XTS, etc.
I get your point. Engines used to have nice details and colors denoting what you were looking at from displacement to the type of carbs. Today, they are just unattractive masses. No one showcases an engine quite like Ferrari. I would love to raise the hood of a Cadillac and see at least a well detailed cover made not of plastic. A very nice crest would be a welcome site as well. The same is true for the Camaro and Corvette.
Right, I understood what you were asking when I replied the first time around.
Again, from everything I’ve heard thus far, what we see here is how the LTA will look under the hood.
That said, given Cadillac’s (and other luxury automakers’) direction to cover up the hood with plastic panels, there will likely be some plastic cover pieces running atop the outer portions of the engine. But those nice Cadillac and 4.2L Twin Turbo insignias should remain visible, as seen in the photos.
As to why the plastic cover panels exist…
1. Appearance: it make everything look “neat” and “uniform” to someone who has no clue how a clean hood should look like
2. Keeps the engine bay clean
3. Baffles operational engine noise
4. Manages airflow in the engine bay for powertrain cooling and for aero purposes (decreases lift, increasing stability at high speeds)
Cadillac President Johan de Nysschen has a bit of Dr Jekyll and Mr Hyde as de Nysschen isn’t sure what he wants Cadillac to be, a company that attracts a lot of attention or a car company that no one know exists; why spend the money to develop a high tech engine and yet not show it to anyone.
What on earth are you talking about? In what way is Cadillac “not showing” it {the engine} to anyone?
There will be V series models, with these V8 being there, not worried. New escalade suv TT V8 engine, coming up. CT5-V TT V8 engine. JDN doesn’t talk about every thing. They didn’t spend all that money just too put it in one model/raod car, and not have a V series model attached too it.
JDN, just told person’s there will more V series models and V sport models.
Never Judge anything till you get the full story.
There is much more to come and this is the entry level V8.
Yes it will look like what you have seen.
From what I read in the SAE magazine there will be two Turbo’s in the V of the engine. Then they will put the two converters and o2 sensors on top of the engine with nothing till the tail pipe tips.
We have a lot to look forward to yet.
I love the compactness of this engine. It would be a shame if a racing team did not pick it up and run with it – irrespective of factory support.
Obviously class regulations will have the most influence on when and where it gets used.
As many automakers put the turbo engines on their racing cars, it has shown how much benefit on the car racing. Lot of automakers in IMSA, like Ford ,European, and even Japanese automakers are doing great turbo engines.Like Ford GTLM, which is V6 turbo engine base DP car, has won many championships since switch from P to GT in 2016. I think it is not ture GM don’t want to put this engine in their DPi and coming out C8.R ,and their ATS-V.R GT3 cars, which were V6TT engine, were doing well in PWC before they exit this series.
As I understand PWC didn’t wanted any factory racing teams in there series anymore, they were forced out. But I think we will see it in these DPI Cadillac’s 4.2liter TT V8, before we will see corvette’s ME TT V8 engine.
My BEST GUESS would be that KATECH,the builder of CorVETTE 5.5 ISDYNO testing !
I dont think a 4.2TT is allowed in IMSA’s DPI class. Its too large to have turbos. The biggest Turbo engines are 3.8L. So this engine wouldn’t even be allowed if the Cadillac DPiV.R teams wanted to use it. Unless GM sleeves it down to a smaller size.
4.2L TT V8- CT5-V series, 3.8-liter TT V8 CT4-V series. Yes I think there will be a smaller version of caddies hot V V8 engine. New escalade SUV TT 4.2-liter V8 engine.
Cadilac can homlogate the LTA AT 4’0 LITERS, FIA REGS 2021 will determine if this engine,will race!
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