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6 Select
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hp @ 6300 rpm

Fuel-injected ferocity for performance cars of all ages

What do you get when you take Chevrolet Performance’s aggressive ASA camshaft — developed for the high-rpm world of circle-track racing — and slip it into an LS3 6.2L engine? The answer is 525 horsepower in one of our most powerful production-based crate engines. We call it the LS376/525, and if take-no-prisoner performance is what you’re looking for in your new Camaro or resto-mod Chevelle, this is it!

The ASA camshaft is a hydraulic roller with .525-inch lift on both sides, along with 226 degrees of 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 breathe exceptionally well at high rpm. And for durability, we complement the cam with higher-rate valve springs.

You’ll need tuning to make the most of the engine in a late-model GM vehicle. If you plan to use the LS376/525 in a vintage car, you’ll need the controller kit (P/N 19259261), which includes the throttle pedal to match its electronically controlled throttle body. Check out our LS1 Engine Kit Installation Guide (P/N 88959384) for details on installing an LS engine in a vintage vehicle.

LS376/525 DYNO

Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.


Part Number:
Engine Type:
LS-Series Gen IV Small-Block V-8
Displacement (cu. in.):
376 (6.2L)
Bore x Stroke (in.):
4.065 x 3.622 (103.25 x 92 mm)
Block (P/N12623967):
Cast aluminum with six-bolt, cross-bolted main caps
Crankshaft (P/N 12597569):
Nodular iron
Connecting Rods (P/N 12607475):
Powdered metal
Pistons (P/N 19207287):
Hypereutectic aluminum
Camshaft Type (P/N 88958770):
Hydraulic roller
Valve Lift (in.):
0.525 intake / 0.525 exhaust
Camshaft Duration (@.050 in.):
226° intake / 236° exhaust


Cylinder Heads (P/N 12629063):
Aluminum L92-style port; “as cast” with 68-cc chambers
Valve Size (in.):
2.165 intake / 1.590 exhaust
Compression Ratio:
Rocker Arms (P/N 12569167 int):
Investment-cast, roll trunnion
Rocker Arms (P/N 10214664 exh):
Investment-cast, roll trunnion
Rocker Arm Ratio:
Recommended Fuel:
92 octane
Maximum Recommended rpm:
Reluctor Wheel:


Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

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    • Assembly does not include any electronics
    • Use LS376/525 Engine Controller Kit P/N 19259261
    • Includes Corvette wet sump oil pan
    • Intended for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
    • Non-Corvette applications require flexplate P/N 12637677
    • Front-end accessory drive kits are available in two configurations
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Download a catalog for a full listing of components and related parts.

SuperMatic 4L70-E Four-Speed Automatic
Transmission • P/N 19299055

Transmission Controller • P/N 19257634

SuperMatic Torque Converter • P/N 19299803

Camaro 6-Speed Manual Transmission • P/N 92246731

LS376/525 Controller Kit • P/N 19259261

Corvette Accessory Drive Kit • P/N 19155067

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.

Destination Freight Charges

To allow you to do an accurate price comparison with prices featured on other Internet sites, GM provides Internet pricing both with and without the Destination Freight Charge (see prices including Destination Freight Charge below). To get full pricing details, go to our Build Your Own section.