One of General Motors’ major headline-making announcements from this year’s SEMA Show in Las Vegas was the unveiling of the new ZZ632 crate engine – a massive 632 cubic-inch Big Block motor that produces 1,000 horsepower and 876 pound-feet of torque on 93-octane pump gas.
GM Authority of course had to find the ZZ632 Big Block during our visit to the 2021 SEMA Show and snap a few pictures of this outrageous new product offering from Chevrolet Performance. While the ZZ632 is undeniably large, it otherwise doesn’t look all that different from any other Chevy crate engine, although the bright orange-painted valve covers with ‘632’ engravings are a sure sign this engine is a bit more special than most.
The iron block that serves as the basis of the ZZ632 engine shares a mold with the smaller (yet still massive) ZZ572 Big Block, but features a 0.040-inch larger bore and 0.375-inch longer stroke, giving it an impressively large displacement of 632 cubic inches, or 10.3 liters. Peak power in this engine arrives at 6,600 rpm, while peak torque arrives at 5,600 rpm. The recommended redline for builders who choose to install the ZZ632 in their hot rod or classic car is 7,000 rpm.
Another highlight of the ZZ632 is its CNC-machined high-flow aluminum heads. These heads feature symmetrical intake and exhaust ports, thus ensuring all cylinders produce a similar power output. The design is dubbed the ‘RS-X Symmetrical Port’ cylinder head as a nod to GM engineer 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 features special ‘RS-X’ engravings on the heads, as our photos show, in recognition of this unique head design.
Chevrolet Performance is currently taking pre-orders for the ZZ632 through its website, with production of the engine set to ramp up in the New Year. Deliveries are expected to commence in the first quarter of 2022.
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Comments
This engine is probably the absolute best in engine construction worldwide.
Why charge an engine when capable people develop and build such an engine!
Thanks for the ZZ632 1000 which is actually 1011HP sharp.
Ain’t no EV motor ever gon look and sound that good
That’s going to leave a mark!
If I had $30k to blow on an engine, i’d buy one!
If I had $30K to blow on a 1000hp BBC engine, I’d buy a $21K 598 standard deck height, pump gas engine from a certain builder in Bohemia, NY, adding the necessary upgrades to make as much or more power and still have money left over for gas – ALL with an engine that will fit where a 396 would – headers, oil pan etc.
The Chevy 632 is an amazing accomplishment for them and the head design is very intriguing, but $30,000 is ridiculous….
Wow. Can’t believe Mary OK ‘d this engine. At least there are still some car folks working at gm
Mary doesn’t know half of what’s going on in her company. That’s why there’s presidents like Mark Reuss and Dan Ammann. She just sets the tone and keeps stock investors happy.
If Bob Lutz was running GM, the stock would be as high as tesla by now, GM market share would be approaching 45%, Chevrolet would be the #1 selling truck without adding GM trucks and Camaro would be the #1 seller its class.Instead we are stuck with a woman who is only in charge because she is a woman, tows the climate change lie and panders to the commies and globalists that stole the 2020 election. This EV craze is going to come back and be the demise of GM.
The only reason I think your wrong is because when this EV craze comes crashing down I think both Ford, stellantis and WV will all be more heavily invested in EV’s and GM will be hit in its ballless groin, but will still be on its feet.
Anyone doupting the EVpocalispe needs to remember, the big three moved the majority of low cost autos in North America and is competing with the best worldwide, paid over 50million last year in EPA fines, yet posted record profits.
Tesla, lost 2 billion in 2017, 1 billion in 2018, and 750 million in 2019. Their first year ever in the black was 2020, when they were shut down, yet received 1.6 billion in carbon credits.
Anyone thinking that EV’s will be cheaper to produce needs to go to eBay and look at prices of new “old school” 100hp eletric motors. At 6-8000$, and these EV’s having 2-3 of these, there’s nearly 20K in just copper, before adding batteries, motor drives, and the actual car itself. The awakening will happen
Anecdotally I know, but my best friend had used GMs for his first 5 vehicles. Life situations pushed him to want a no nonsense mile-eating car. Now ready to buy something new and he settled for a foreign car. He’s thrown in the towel on GM, notwithstanding the EPA carbon rackets. How many others have?
I was at SEMA 2021. This was the single item in the Chevrolet display that attracted a huge mob throughout the show. It was hard to get near this engine to take pictures. Glad to see that GM went forth with this.
I’m still spooked about GM going all in on EV’s.
Wonder what Roger Penske thinks about GM’s EV plan?
Roger made a killing on Detroit Diesel when he purchased it from GM and then sold it a few years later to Daimler.
Daimler has done very well with Detroit Diesel. Remodeled and expanded their DD engine plant on Outer Drive East in Detroit.
GM isn’t all in. They are just being PC for the time being because for some reason, Tesla’s has posted almost 10 billion with a B in losses this decade but has record stock. They are playing the government grant and stock maker game. Once warren buffet goes broke and can’t infuse any more stock money it’s back to the big blocks.
Need proof, we’re all talking about it right here! A mega big block? Who would have thought that in today’s green new deal world
How long before we see this in a C8 Corvette? Take that Z06!
It’s a sad time we are living in.
It seems that no one is really looking into the future. If research was done properly about EV vehicles and the end results it would be a completely different story. You have really smart individuals involved and no one is talking about Carbon Footprints.
It’s a disaster in the making! Do some homework folks and you will see.
Just sharing. To bad. The end is near.
Why can’t people choose for them selves if they want a combustion engine or ev powdered we should embrace new technology looking forward to the future folks an iam a Chevy big block Guy
I work in the auto industry and wonder just who is behind this push to electric cars. Yes in major cities it is something to think about. I would like answers to a few questions first. Like what effect these autos will have on our environment when scraped by the millions. You will buy a new car when the battery dies because it is part of inner structure of the car. What cost of inner structure to charge these cars since it takes as much to run household 4 days to completely charge a dead battery. Since energy is supply and demand how much will everyone’s electric bill rise? How many jobs lost from auto related market of today including aftermarket and supply chains? I feel it’s a bad move for most.
Why didn’t GM just install this Monster 10.3 liter Engine into the C8 Zora and call it a day
Sure wish they would have used a Aluminum block instead of steel. But glad to see GM is making something bigger and better for those that don’t understand how to build one for themselves.
High-quality, thin cast steel is usually only slightly heavier than aluminum, which is visually more massive and thick-walled. The advantage of cast steel is that it can break less and the engine block is also more stable than aluminum. With custom conversions it can happen that the engine falls down or some attachment is not possible with aluminum.
I`m sure that the GM people evaluated and considered all of this during the design and assembly.
Largely, you have to have a spare $20k+ laying around if you purchase an EV in case the battery goes out. It is not covered buy the cars warranty. Second, if you go beyond several hundred miles you are walking after looking for a charging station. Lastly, with out mining you don’t have batteries.
Last note. If you ding your Tesla in can take upwards of six months to get it fixed so you need a second vehicle.
If I had $30K to blow on a 1000hp BBC engine, I’d buy a $21K 598 standard deck height, pump gas engine from a certain builder in Bohemia, NY, adding the necessary upgrades to make as much or more power and still have money left over for gas – ALL with an engine that will fit where a 396 would – headers, oil pan etc.
The Chevy 632 is an amazing accomplishment for them and the head design is very intriguing, but $30,000 is ridiculous….