SKU: 69729694023

Chevrolet Performance LS 376/525 LS3 Long Block Crate Engine # 19435110

Sale price$6637.50 Regular price$7375.00
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Description

Chevrolet Performance LS 376/525 LS3 Long Block Crate Engine # 19435110Crate Engine, LS 376 525 LS3 Long Block, Internal Balance, Hydraulic Roller, OE Roller, Aluminum Block and Cylinder Heads, Chevrolet, 6. 2L LS, Each Crate Engine Family: Chevy LS Actual Engine Displacement: 6. 2L 376 Crate Engine Cylinder Head Material: Aluminum Engine Block Material: Aluminum Advertised Compression Ratio: 10. 7: 1 Assembled: Yes Engine Balance: Internal Cam Style: Hydraulic roller, OE roller Rear Main Seal Style: 1 piece Intake

Crate Engine, LS 376/525 LS3 Long Block, Internal Balance, Hydraulic Roller, OE Roller, Aluminum Block and Cylinder Heads, Chevrolet, 6.2L LS, Each

Crate Engine Family:

Chevy LS

Actual Engine Displacement:

6.2L/376

Crate Engine Cylinder Head Material:

Aluminum

Engine Block Material:

Aluminum

Advertised Compression Ratio:

10.7:1

Assembled:

Yes

Engine Balance:

Internal

Cam Style:

Hydraulic roller, OE roller

Rear Main Seal Style:

1-piece

Intake Manifold Included:

No

Cylinder Heads Included:

Yes

Carburetor Included:

No

Throttle Body Included:

No

Distributor Included:

No

Oil Pan Included:

Yes

Valve Covers Included:

Yes

Timing Cover Included:

Yes

Water Pump Included:

No

Harmonic Balancer Included:

Yes

Flexplate Included:

No

Flywheel Included:

No

Air Cleaner Included:

No

Spark Plugs Included:

No

Spark Plug Wires Included:

No

Computer Included:

No

Wiring Harness Included:

No

Supercharger Included:

No

Remanufactured:

No

Quantity:

Sold individually.

Chevrolet Performance LS 376/525 LS3 Long Block Crate Engines

Chevrolet Performance has released its latest factory-engineered LS high-performance engine: the 376/525 LS3 long block. It blends the racing-derived ASA camshaft with the LS3 6.2L production engine to create the most powerful production-based crate engine in Chevrolet Performance's portfolio, delivering 525 hp at 6,200 rpm and 486 lbs.-ft. torque at 5,200 rpm. (For installation in older vehicles, the engine controller kit part number 19354332 is calibrated specifically for this new engine.)

Using the LS3 production enginethe same used in Corvettes and Camarosas the foundation for the LS 376/525 helped keep the retail price lower; while the ASA camshaft is a proven, power-building component that's been successful in the high-RPM world of Circle Track racing. The ASA camshaft is a hydraulic roller with .525-inch lift on both the intake and exhaust sides, along with 226 degrees duration on the intake side and 236 degrees on the exhaust side. Coupled with a tight, 110-degree lobe separation angle, it helps the engine deliver excellent throttle response and breath exceptionally well at high RPM. The cam also gives the LS 376/525 the most aggressive personality among Chevrolet Performance's growing lineup of production-based high-performance crate engines, which also includes the LS 376/480 and the carbureted LS 376/515.

Front-end accessories must be obtained separately, along with the engine controller kit. Chevrolet Performance offers several accessory drive kits to suit a variety of applications; and some installations for older vehicles will require the oil pan changed.

Engine specifications:

* Power: 525 hp at 6,200 rpm, 486 lbs.-ft. of torque at 5,200 rpm
* Displacement: 376 C.I.D., 6.2L
* Bore x Stroke: 4.060 in. x 3.620 in.
* Compression Ratio: 10.7:1
* Recommended Fuel: 92 Octane
* Block: Cast Aluminum with 6-bolt cross bolted main caps
* Crankshaft: Nodular Iron
* Connecting Rods: Powdered Metal Steel
* Pistons: Hypereutectic Aluminum
* Camshaft: Steel Hydraulic Roller Tappet
* Cam Lift: .525 in. Intake / .525 in. Exhaust
* Cam Duration at .050 in.: 226 deg. Intake / 236 deg. Exhaust
* Lobe Separation: 110 Degree
* Cylinder Heads: Aluminum L92 style ports
* Combustion Chamber: 68cc
* Valves: 2.165 in. Intake/ 1.590 in. Exhaust
* Rocker Arms: Cast Roller Trunnion, 1.7:1 Ratio
* Balance: Internal
* Reluctor: 58X
* Maximum GM Recommended RPM: 6,600
* GM Recommended Torque Converter Stall 3000-3400

Engine Includes:
-- Fully GM assembled long block
-- Oil pump, pick-up and Camaro oil pan (12628771)
-- Corvette harmonic balancer
-- Front timing cover with cam sensor
-- Oil filter
-- Passenger side RH oil dipstick and tube (not included)
(Note: Does not include oil dipstick tube, oil dipstick, or steam crossover tube.)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 69729694023

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J
Verified Purchase
JOKER
Louisville, US
★★★★★ 1
Sound unexpectantly blasted for no reason. It malfunctioned!
I spent hours between installation and set up! I had to return it. I turned on NET (network) to play Sirius Xm and the volume was low but after a few minutes the sound turned all the way up to maximum completely on its own? This happened at least two more times. I contacted ONKYO and was told it is clearly defective and that their is no solution to correct the problem, and that I should return it immediately! I purchased the newer model and am pleased with its performance! It’s unfortunate because the first one that had the issue with the sound really played nice, but having sound change its volume so suddenly to its full capacity was not what I expected, nor felt comfortable enough to keep as I said I was told to return it, which I did! My advice here would be to purchase the newer model, which seems to be much more stable in its performance, and the quality is excellent.
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Reviewed in the United States on November 29, 2025
B
Verified Purchase
Bossman
Lowell, US
★★★★★ 5
Absolutely Love This Receiver
The Onkyo TX‑NR7100 has completely transformed my home theater. The sound quality is rich, detailed, and powerful, and the 9.2‑channel setup gives movies and music a level of immersion I didn’t realize I was missing. Dirac Live right out of the box is a huge win — the room correction made an immediate, noticeable improvement. Setup was smooth, the interface is clean, and everything from streaming to switching inputs feels fast and reliable. It also plays perfectly with the rest of my system, and the THX certification really shows in how cinematic everything sounds. I absolutely love this receiver. It’s one of those upgrades that makes you wonder why you didn’t do it sooner.
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Reviewed in the United States on February 20, 2026
J
Verified Purchase
James Tepper
Whiting, US
★★★★★ 5
Incredible 9.2 Surround receiver at an unbeatable price.
I may return at a future date to give a more complete review, but others that are much more knowledgeable about audio equipment than I have already done so. For me, the Onkyo (Onkyo TX-NR7100 9.2-Channel 8K/4K Network A/V Receiver) replaced a much older (2001) TX DS787 5.1 100 W Surround receiver that listed new for around $1050. I probably didn't pay quite that much but certainly something near $900. It was great for its time, perhaps even advanced with THX, Dolby, and other listening modes. But it didn't have: HDMI inputs or outputs, any BlueTooth capability, no hard wired or WiFi connectivity or basically any operating or connection modes that most all modern receivers have. This turned into a big problem with modern LED/LCD/OLED TVs, Alexa and other now common devices. I bought my new Onkyo TX-NR7100 from Amazon for $625. Other retailers (e.g.Best Buy) advertise it for up to $1200, so Amazon's price is outstanding. Set up was far more complicated (for me) than any previous receiver that I ever owned, mostly because there were a very large number of back panel input and output jacks, to and from the TV, as well as speaker outputs for 9.2 surround. Suffice it to say that once everything was connected properly (I made a few mistakes along the way), I was completely thrilled. The On Screen Display, completely accessible either from the front panel or the remote was far superior to anything I had ever seen before. Literally every operating parameter is accessible to the user. And I used most of them. It is also completely WiFi ready so my 150 Gbit home Wifi network lets it connect wirelessly and stream music error free. BlueTooth is also another way to connect almost any device to it for audio and audio/video playback if you connect the digital connections to and from a modern TV. It also speaks and listens to Alexa, although I must confess that I haven't played around with that much yet. This is already much longer than I had intended, so let it suffice to say that the Onkyo TX-NR7100 is an absolutely incredible receiver for an incredible price. I'd give it 8 stars if I could. JM TEPPER
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Reviewed in the United States on November 7, 2024
B
Verified Purchase
Brian M.
Houston, US
★★★★★ 5
Sounds great.
Just received my Onkyo TX-NR 7100, watched a few YouTube videos before it arrived, so set up was easy. Ran accuEQ, I am getting new front speakers so I’ll wait to run Dirac. After accuEQ, I still had to make a few adjustments, to the speaker levels and especially the sub. It set my subwoofer way too low. As of right now having no problems with Bluetooth. I’ve only listened to music so far, can’t wait to watch a movie. For now I have a 5.1.2. System, getting new fronts, the Klipsch r51-m’s will go to the rear surround and Klipsch r41-m’s will be my height speakers in a 5.1.4 system. So far loving this avr. Update 2: Just calibrated with Dirac for the 6th time. They tell you if you sit in a recliner, reclined measure with it reclined. Well I measured with the chair in its upright position. It makes a huge difference I hear the surrounds much better. Btw I listen to all channel stereo, I know audiophiles say it sucks, however I listened to 2 channel stereo for 20 years, when there was nothing else. I didn’t buy a 9 channel avr to listen to 2 channel stereo. Like Randy the cheap audio man says “ audiophiles aren’t always right. If it sounds good to you, that’s all that matters.” So try calibrating in the upright position, or if you sit on a stationary chair or couch, try positioning the mic slightly forward of your listening position. It makes a huge difference. Hope this helps, enjoy. Update: Ok bought Klipsch rp-600m speakers for the front with 52c center. 51m surrounds, 41m rear heights. Polk owm3 front heights. Why Polk? Lighter easy to hang and as height speakers they are only there for atmos. Ran Dirac live, the application does what it would take several hours to make it sound like it does, if I even could get it to sound so good. Apple TV 4K with my Hisense U8K. The google tv interface is ok, but Apple TV is faster and easier. The Onkyo 7100 is a gem, runs pretty warm but I have it out in the open. If you are going to put in a cabinet I suggest a fan. Very happy with the whole system.
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Reviewed in the United States on January 11, 2025
A
Verified Purchase
Amazon Customer
West Palm Beach, US
★★★★★ 5
Handles the power
Size: 5FT, Style: 8AWG
Used for leads to handle high Amperage. Replaced cheesy 12 gauge leads that came with the unit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026

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