Earlier this week, Chevrolet Performance teased us with a brief video overlaid with the sound of some impressive internal combustion noise. Now, the go-fast brand has pulled the sheets on the source of that soundtrack, namely the new Chevrolet Performance ZZ632 crate engine.
Framed at the largest and most powerful engine Chevrolet Performance has ever made, the ZZ632 create engine produces a head-spinning 1,004 horsepower and 876 pound-feet of torque when fed 93-octane gasoline. Peak power arrives at 6,600 rpm, while peak torque arrives 5,600 rpm. Redline is recommended at 7,000 rpm.
“The ZZ632 sits at the top of our unparalleled crate engine lineup as the king of performance,” said director of the Performance and Racing Propulsion Team, Russ O’Blenes. “It delivers incredible power, and it does it on pump gas.”
Highlights include eight port injectors and CNC-machined high-flow aluminum heads. The heads are equipped with symmetrical intake and exhaust ports, thus ensuring all cylinders produce the similar power output. The technology is dubbed RS-X Symmetrical Port cylinder heads as a nod to Ron Sperry, who also designed the symmetrical ports on the Chevy Small Block Gen III LS1 V8 cradled by the 1997 Chevy Corvette.
The ZZ632 includes a cast iron block, four-bolt main caps, a forged steel crankshaft and connecting rods, and forged aluminum pistons. The compression ratio is 12.0:1. Notably, the iron block shares a mold with the Chevrolet Performance ZZ572 crate engine, with the castings machined out to the impressive 632-cubic-inch (or 10.3-liter) displacement. Bore is up 0.040 inch, while stroke was increased 0.375 inch. Both the block and connecting rods were modified to accommodate the extra-long stroke.
According to Chevrolet Performance, a single example of the ZZ632 endured over 200 simulated drag-racing passes on a dynamometer during development.
As expected, the Chevrolet Performance ZZ632 crate engine will make an appearance at the 2021 SEMA Show next month. Deliveries are expected to ramp up early next year.
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Comments
C’mon GM, drop this in an Equinox SS…
TRX anyone?
This is a drag race crate engine, notice they rated durability in drag race passes, not miles?
Whats the sticker price on this. ?
Okwhat is the price I want one
They would have to ad AFM to it.. so there goes that.. Gotta keep the EPA happy.
AFM is for fuel economy not emissions.
SCREW THE EPA , THOSE CLOWNS DOESN’T HAVE A CLUE HOW AN INTERNAL COMBUSTION ENGINE WORKES PERIOD! I STARTED WORKING AN BUILDING ENGINES WHEN MY STEP DAD STARTED TEACHING ME IN HIS SPEED SHOP AT 8YEARS OLD. THE ENGINES I LEARNED TO BUILD WAS CHEVYS AN FORDS THAT WAS IN THE 1960s !!
more than you can afford pal
How do know what some can afford? Funny.
wheres the malibu SS ?
GM should offer this as a COPO option on any of their vehicles that can handle it. If the electric vehicle is really in the future, offer it up as a one year option and see what kind of response you get. You have to admit there are a whole lot of Hellcat vehicles on the street so GM might as well get a piece of the pie.
Should be the upgrade engine to come in the 2022 Silverado Zr2
Why?
The only good reason is why not?
Here’s one it would make an already high priced truck go up by what $15-20k?
it could be a option, those who want and can afford it, get it…. those who can’t afford it can get a smaller engine in their ZR2. Got any other reasons why it should not be in the ZR2??
Bob first off chevy isn’t trying to have the fastest truck out there one reason they didn’t try. Second like someone said in another article about the zr2 how many people are going to actually use it for high speed off-roading? The answer hardly any it’s nothing more then a bro-dozer that people can Jack up and slap big tires and rims on then go off-roading when they hit the curb in the local grocery store parking lot. gm is trying to make money not cater to the very very select few who would choose that option thanks.
A drag race crate engine in an off road pickup truck?
Why not?
Wouldn’t fit in the engine bay (look at where the engine sits in a modern GM pickup and the height of this engine)
Never meet emissions
No 93 octane gas most places
Heavy engine
Would need a 3500 rpm stall converter, not great on the street.
Would be so lopey at idle and shake the truck to pieces
When someone makes a comment as ignorant as yours I never know if I should laugh, or point out the ignorance.
Yeah, well, maybe the idea just sounds like a lot of fun. And, maybe, ignorance is bliss, or, with some of the reasons you state above. Maybe it wouldn’t make 1004 HP if it had emission hardware on it, but sure it could meet emissions if needed. And it wouldn’t need a 3500rpm stall converter for this brute, did you see the torque and hp curve? Probably get off the line just fine without it, but, if you are concerned with that, just go with a 6 speed manual conversion why you are at it. And the idle, most of us who would be interested in such a beast in a ZR2 would eat that up. You can have the base model, okay by me! LOL.
Listen Bro, I have been around engine development my whole life, and I know what I am talking about. This engine needs at least a 3500 RPM stall converter, let’s look at that torque curve, do you suppose there is a reason they started the pull around 3000 rpm? Do you know what happens when the start the pull lower with a high compression- pump gas engine? Can you say detonation? Looking at the cylinder heads and camshaft needed to make this much power, with an idle speed around 1500 rpm, with a typical stock torque converter (approx 1900 rpm stall) its going to lunge forward when you drop it into gear, and either kill engine, or lope like you have never felt. As for 6 speed conversion, you know T1 trucks were designed with no space or provisions for a clutch pedal or linkage, I don’t think that is going to be an easy conversion. Now on emissions, this engine has a massive camshaft with lots of valve overlap, which means you are going to have lots of unburned fuel in the exhaust stream (catalytic converter going to melt down) This also has massive intake ports which do not work well below certain levels of flow. So while your comment shows a kindergarten level of understanding, This would not be a good engine in the ZR2, hence the reason GM will not put this in any production pickup licensed for the road. If you want to have a faster, and more fun ZR2, throw a blower on the 6.2l and it will be all the fun the rest of the drivetrain and chassis can handle, no 6 speed manual conversion needed.
LOL, you have to understand no one thinks this would ever be put into any production vehicle, right? Yeah people comment that it would be cool, wouldn’t it? But they do know it would never happen. Geez. Get off your high horse. I too have been around performance engines and vehicles too. With a carb and a cam driven distributor and vacuum or mechanical advance, yeah, you are correct, detonation would be a problem with pump gas, especially if working on the old SBC or BBC chevy engines. Factor in the LS/LT based design and the head design, and a superb ECU system, with electronic advance and timing control, plus fuel control, a lot of that goes away, or can be controlled. Anyhow good for you being the expert and feeling so emboldened that you have to demean other’s comments as a result by hurling insults.
Detonation can be a problem for any engine in certain conditions, LT based engines use direct injection which can give the tuner the best anti detonation control (no fuel, no detonation). This 632 is port injected. As for ignition timing controlling detonation, that has limited effect in a 12 to 1 compression port injected engine, as in the right conditions this engine will fire even without the ignition. Going rich on fuel has some anti detonation effect too, but again in this engine does not have the sophisticated anti knock features or controls that a modern LT engine has. I have built a few engines with the same port fuel injection GM used here, its quite common in the racing world today.
I am not on a high horse, its just that your comment is not grounded in reality. As for putting this engine in a ZR2, it would be silly, and a supercharged 6.2L would run circles around it in 95% of real world scenarios and be far more fuel efficient and meet emissions (cheaper too). This is something that actually might happen in the future, although I do not think it will be the LT4 everyone calls for, but a detuned version to meet truck durability standards. Just like the Hellcat engine Ram put in the TRX, not called a Hellcat, and detuned for truck use (see what I mean?)
Karen— these are just dreamers here. We know it is not a RPO engine. Dyno never starts below 3000 on any motor. The motor will die from the load. This motor has more torque at 1000rpm than most cars on the road today. I question your skills “engine bragger”.
Umm, wrong…. Engine dyno’s can load the engine at any rate you want, at any rpm (above 500 as lower could hydraulic lock the water brake), and you better bet development engines undergoing test see full throttle, full load pulls from idle, and lots of them. Interestingly you point out that this 632 has XXX torque at 1000 rpm, but in your previous sentence you say it will die if you push it down below 3000 with a dyno… Which is it going to be ? Makes lots of torque at 1000rpm, or dies? Hint, it will detonate itself to death at around 2000 RPM, you might be able to get the engine to pull down to 1000 rpm at partial throttle and very little load, but the engine is not going to be happy at all, and will not make much torque at all, hardly measurable, maybe 25-50 lb ft which is more from rotating inertia than energy generation? If you were to open the throttle fully in that condition it will just die, and this is due to camshaft overall, port velocity and fuel atomization. When you have a camshaft with lots of overlap, at low rpm, the engine does not know which way the air should flow through the engine, and in certain conditions it might flow the wrong way.
Don’t waste your time with these fools Donavan they have no clue what they are talking about.
dude, its a joke, calm yourself bud
Nothing better than cast iron blocks. 💪
You mean for making boat anchors?
Air cleaner seems small for a 10.4 Litre displacement. At a 7,000 RPM redline, it’s drawing 2,560 CFM!
Should have been the engine in the Camaro .
Why you wouldn’t buy it even if they did lol
Maybe be an option next year in the COPO Camaro, that would be awesome.
NA—and on pump gas—and 1004/876!!!
No doubt it’ll carry a hefty price tag, but with the current aftermarket flooded with piss-poor-quality chinese engine components, coupled with the increasing difficulty in finding a RELIABLE machine shop, this looks like a winner for anyone wanting big cubes/horsepower.
12 to 1 compression on pump gas is impressive in a big block. I don’t know if they bleed off a little with a long overlap cam but that’s progress from the 9.1 to 1 of the 8.1 engine.
Comparing a drag race engine that “can” run on 93 octane to an 8.1L is like comparing apples to watermelon. 8.1 was designed to meet emissions, and run in stock vehicles pulling hard from idle on up, this 632 likely idles about 1500 rpm, and does not start to pull until 3000 rpm. Not really street-able in a truck. This is a drag race crate engine.
At 7K rpm, no bleed off due to overlap!
Likely this engine will sell at Crate Engine Depot for around $22K incl fuel injection. These heads and intake are going to drive up the cost a bit, as if you look they are very raised symmetrical ports, and not the conventional rect ports on the ZZ572 720R . This engine is a sweet drag race engine.
..can’t wait to drop this mighty engine in my 1967 Chevy2….take me to the 8 second quarter mile…in the mean time I have my 383 stroker sbc running high 11.56
Yah! You will get to the Dunkin Donut drive through 30 seconds faster !
You are running 11:50’s and you think going into the 8’s with this engine?
why is it sooo slow
Call me crazy….but does the font style and size of the “632” on the crate look the same as the”392″ style and font that is found on FCA’s 6.4 Scatpacks?
No, it looks the same as the 572.
They should drop this in the trailblazer and make another ss 🤣
Nice big cube big power all on pump gas would like to install the best in my 70 chevelle SS and go have some fun for the weekend !!
My favorite color,Chevy orange!
I need this Rat and a 67 Chevelle so I can go trolling for any Hellephant’s that may be rolling around.
67 Chevelle would need a lot of work, and rolling garbage cans for tires to hook up this much power. Mine had a lot of trouble hooking up 500 hp. Anyone cutting up a 67 Chevelle for tubs should be beaten on site IMO, as we are running out of those beauties.
I wonder if this would move my ’68 Impala better than the blown 383 in it now? Hmmmm
This is awesome, and having built quite a few BBC 632’s, over the years this power curve is solid for an off the shelf piece on 93 octane fuel. I am impressed, and cannot wait to get my hands on one of these to play with.
No mention on cam… Is it hydraulic or solid? And the most important detail is left out…. Price? Not the best review I’ve ever read…
Its a solid roller cam, you can hear it in the teaser sound clip, which was recorded in a dyno cell.
I was just looking in my notebook, and comparing these new heads to early big chief heads we used in the 1990’s which breathed about the same, Camshaft is likely around .800 lift, and duration @ .050 of 280ish and considering the wide, and flat torque curve, likely 114 LSA
My guess the list price on this engine will likely be around $25-30K incl fuel injection, which is a heck of a good deal, for what you get. Crate Engine Depot will be selling it for around $22K, which no engine builder can come even close to without using a bunch of crappy import parts.
Hmm, what to put it in?
No, what to put “them” in!
Answer: 21 foot twin engine S P E E D B O A T!
These engines would not live a week in a boat (at this power level)… its a drag race engine.
Hmmm. A 1,004 hp 632 V8 vs. the stock Small Block 350 my C/10 left the factory with. That’s really tempting, not many would be able to hang with me on the street or in Mexico 😉
No In Mexico at least where I live they would just shoot you for it. Welcome to Juárez.
I’ll take two, please. To go….. 😉
How about a nice tombstone with it to go …..
So is this considered balanced and blueprint
Crate
Interesting comments on here, looks like a pretty stout engine 1.58 hp per cube is no slouch.
All things considered.. impressive
Well… I don’t need it . Have nothing to drop it in . But I do want it ….
What is the ignition set up? Distributer, computer, ?
Donavan, your an idiot.
Yeah the engine doesn’t start to pull until 3000, but at 3000 it’s damn near making as much power as an l86 at peak.
All high horsepower engine are race engines. I don’t care if you were born out of the backside of an eco turd, the fact that your pushing and trying to convince everyone it’s stupid speaks volume of your ignorance.
Engineering. Anything can be done with enough money. But not at your little motor shop.
I’ll stick with my turbskees and spooterchargers, get the same to 150% the horsepower and still be able to run on the street, even if I never get to pass up a gas station. Added bonus with the spooter is that I don’t have to wait for the feels. lol
The ZZ632 / 1000 is again a masterpiece from Chevrolet Peformance for SEMA 2021.
If you consider that the engine delivers 1004 HP at only 6,500 RPM (see diagram) and 876 LB-FT torque at 5,600 RPM, it is of course very elaborately designed for 100HP per liter and therefore of high quality if it holds at least 200 drag starts.
You have to consider that the ZZ632 achieves this performance at regular speeds as with series engines.
This is an absolute technical masterpiece of the developers and also the engine builders who assemble this ZZ632 super engine.
The price of the ZZ632 is also calculated by marketing and should be under $ 20,000 + tax.
Conclusion: Again you can see that GM has always had great ideas and that they are implemented quickly so that customers can buy top products.
Could also imagine a BossHoss V8 motorcycle for marketing activities.
I was wondering how it would work in my boat. Although I might need to double or triple the fuel tank size. LOL
To V8srule Amen to that bro.
After reading many media reports and comments, I am now going to write another comment.
The ZZ632 / 1000 crate engine is currently the best of all times and, as known at GM, also durable and inexpensive. Since I assume that fans will buy the V8 engine, few will be built too cult. Think you can drive this engine at regular speeds in vehicles with manual transmission. The durability of the clutch and gearbox also depends on the weight of the vehicles. I think show trucks and show cars like Cadillac from the 50s to 90s are perfectly suited.
And whoever thinks the ZZ632 / 1000 is not ecologically correct, I clearly write that he is wrong because even the exhaust gases can be clean! The exhaust sound of a 10.4 liter V8 has to be brilliantly powerful. I wish for really nice restomods read show cars. The weight and power of the ZZ632 / 1000 is technically not an issue because the ZZ572 was also installed in vehicles.
Since they don’t like diesel trucks in California, the ZZ632 / 1000 can also be installed in class 3-8 trucks!
Since it has no turbocharger, it also runs cooler and produces less heat!
Addressed to the German media such as AMS – stay with your mass-produced 4.0 – 4.4 BiTurbo V8 which are scrap after 50,000 miles and cost twice as much as the ZZ632 / 1000.
The ZZ632 / 1000 is awesome as I wrote before. The cost of the engine too.
I would be interested in whether it is possible to develop and produce a crate engine with identical cylinder heads (mirrored left and right)?
An example where this was possible is the BMW V12, M70B50 engine.
This should really be possible in 2021 and the costs would be much lower because only one cylinder head! This applies to the entire process from planning, purchasing, development, part numbers, production, sales, logistics and maintenance!
Why this question? I am a fan of sensible cost down thinking!
The last time I checked Big Block Chevy heads were interchangeable between left and right. And that is the architecture this is based on.
Why or how can someone state you can’t afford it ? Easy… Cuz they can’t ! Don’t waste your time on them .
After reading these comments I bet most of you all drive a cruise and are just bench racers
Love to put it and the trans in my 94 Yukon..
I would be very interested in buying the 2023 632 SS ,Silverado Stepside,The body and wheels and stance is very sharp!