No listed engine is specified as a 700-horsepower LS crate engine. The closest documented LS-compatible options are a 510-hp package with a Holley Terminator X Max EFI system and a 430-hp LS3 crate engine. The other listings are a 500-hp small-block, a 460-hp big-block, and a Chevrolet Performance engine whose horsepower is not provided. Use the comparison below to identify the nearest match, or treat these as starting points for a build that needs verified output near 700 hp.
| Engine | Listed output | Best suited for |
|---|---|---|
| BluePrint 376 LS-Compatible Pro Series | 510 hp | Buyers seeking the closest documented LS-compatible option |
| GM 6.2L LS3 | 430 hp | Buyers seeking a specified LS3 engine |
| BluePrint 400 ci Small Block | 500 hp | Buyers comparing a high-output long block |
| BluePrint 454 Big Block Chevy | 460 hp | Buyers open to a non-LS big-block |
| Chevrolet Performance 19355722 | Not stated | Buyers who can verify specifications before purchase |
BluePrint 376 LS-Compatible 510 HP Engine
This is the closest documented option in the list to a 700-hp LS crate engine, though its stated output is 510 hp, not 700. It is a 376-cubic-inch LS-compatible Pro Series engine with BluePrint LS3 aluminum cylinder heads, a 10.7:1 compression ratio, and a hydraulic roller cam.
The package includes a Holley Terminator X Max Gen IV ECU and harness, multi-port fuel injection, a drive-by-wire throttle body, LS3 cast aluminum intake manifold, and LS-swap oil pan. It is listed at 440 lb-ft and calls for 91-octane-or-higher fuel.
Best for: Buyers who want a documented LS-compatible engine with EFI components included. Choose this if the included controls and listed 510-hp output fit the build. It is not a verified 700-hp engine; confirm fitment and any required changes with the seller or builder.
GM Performance 6.2L LS3 430 HP
This GM Performance Parts crate engine is identified as a 6.2-liter LS3 rated at 430 hp. The listing gives dimensions of 42 by 42 by 31 inches, but does not provide further details about included accessories or fuel-management components.
Best for: Buyers who specifically want a listed LS3 engine and can work from its stated 430-hp rating. It is a clearer LS-family match than the non-LS alternatives, but it is substantially below 700 hp. Check the complete package contents and installation requirements before buying.
BluePrint 400 CI Small-Block 500 HP Long Block
This BluePrint engine is listed at 500 hp and 500 lb-ft, with aluminum cylinder heads, a 10.3:1 compression ratio, and a hydraulic roller cam. Its listed rotating components include forged pistons and a forged steel crankshaft with a 3.750-inch stroke.
Best for: Buyers comparing a high-output small-block long block rather than requiring an LS engine. Its listed output is closer to 700 hp than the LS3’s, but the product name identifies it as GM small-block compatible, not as an LS crate engine. Confirm what additional components the long-block configuration requires.
BluePrint 454 Big-Block Chevy 460 HP
The listing describes a dressed 454-cubic-inch Big Block Chevy crate engine rated at 460 hp. It emphasizes durability and suitability for professional or personal automotive projects, but does not provide detailed component specifications in the supplied features.
Best for: Buyers who are open to a traditional big-block and do not require LS architecture. Avoid this choice if an LS engine is essential to the project. Its stated 460 hp is also below the requested 700-hp target.
Chevrolet Performance 19355722 Crate Engine
The provided listing identifies this as a Chevrolet Performance crate engine but does not state its displacement, engine family, or horsepower. It lists package dimensions of 43.5 by 34.38 by 31.38 inches and a package weight of 485 pounds.
Best for: Buyers who can obtain and verify the full engine specifications before deciding. Because output and LS compatibility are not established by the supplied details, this is not a confirmed match for a 700-hp LS build. Confirm the engine code, included parts, and rated output before purchase.
Buying Guide: How To Choose A 700 HP LS Crate Engine
Does the listing actually meet 700 hp?
Check the stated horsepower and how it is measured. None of these five listings specifies 700 hp. The closest documented LS-compatible option is rated at 510 hp, so do not assume it reaches 700 hp without a clearly documented build specification. Ask the seller or engine builder to confirm the exact configuration and output.
Is it an LS engine or simply a Chevy small-block?
“Chevy,” “GM,” and “small-block” do not by themselves confirm LS compatibility. The LS3 and 376 LS-compatible listing explicitly identify an LS engine family or compatibility. The 400-cubic-inch long block and 454 big-block are alternatives, not equivalent LS choices.
What comes with the engine?
Compare whether the listing is a long block, dressed engine, or a more complete package. The 510-hp LS-compatible package specifically lists an ECU and harness, EFI, intake manifold, and other components. The 400-ci product is identified as a long block. The supplied details for the other listings do not establish a complete installation package.
What should be checked before ordering?
- Verify engine family, displacement, rated horsepower, and the exact configuration.
- Confirm vehicle fitment, oil-pan clearance, accessory needs, and installation components with a qualified builder.
- For the 510-hp option, note its listed 91+ octane fuel recommendation and included EFI system.
- Ask what additional parts are needed and whether the package supports the intended use.
Frequently Asked Questions
Is any listed engine rated at 700 hp?
No. The highest stated output among the listings is 510 hp, and it is described as LS-compatible.
Which listed option is closest to a 700 hp LS engine?
The BluePrint 376-cubic-inch LS-compatible Pro Series engine is closest by stated output at 510 hp. It does not meet the 700-hp target.
Which option explicitly identifies as an LS3?
The GM Performance Parts 6.2-liter LS3 listing identifies its engine as an LS3 and states a 430-hp rating.
Is the 454 crate engine an LS engine?
No. Its listing identifies it as a 454-cubic-inch Big Block Chevy, a different engine type from an LS.
Can the 510-hp engine be assumed to produce 700 hp after modifications?
No. The provided listing does not specify a modification path or a verified 700-hp configuration. Confirm any proposed build and output with the engine supplier or a qualified builder.