In hot rodding, sometimes you just need to start fresh. The reasons vary: maybe you've reached your engine's power limit. Maybe you're tired of your combo, or your combo is just plain tired. And just maybe, you happened to blow your combo up—in which case, we salute you!

But regardless of your reason, you have reason to celebrate: thanks to our vibrant EFI GM aftermarket, it's easier than ever to have a new, high-powered engine shipped right to your door.

We've rounded up 16 LS-, LT-, and Buick Turbo V6-based engines for you to drool over. And because they're a mix of short-blocks, long-blocks, and crate engines—starting at only $3,999—finding your next bullet should be a walk in the park.

So take a look, then make up a good excuse for the old lady—it's time to drop some big power into your EFI GM.


1. Arizona GN

ArizonaGN.com and its owner, Nick Micale, offer a great blend of talent, experience, and application for Turbo Buick owners. With more than a combined 50 years of automotive performance experience at the 20-year-old shop, Phoenix-based ArizonaGN.com puts its customers first, makes decisions that are in the customer's best interests, and is determined to put their experience to work for each of their clients, to help them reach their Turbo Buick goals.

ArizonaGN.com is happy to build stock-block 109 Turbo Buick engines, just ask Dick Kereny—his 109 made the first stock-block 8-second run. But the two builds below—an iron Buick Motorsports 4.1 crate and an aluminum TA Performance short-block—feature an additional 40 cubes, huge torque and power, and a stronger foundation compared to the factory block.

270-Inch Iron Turbo V6 Engine
Block: Buick 4.1 iron
Displacement: 270 ci
Compression Ratio: 9.5:1
Crankshaft: 3.625", forged steel
Rods: 6.0" Molner, forged steel
Pistons: Ross forged, 4.0" bore
Rings: Total Seal ductile moly
Rod Bearings: FM performance
Main Bearings: FM performance
Cam Bearings: TA Performance double grooved
Bolts: ARP head studs
Heads: TA Performance SI aluminum, 1.94"/1.60" valves
Head Gaskets: Fel-Pro 1026
Cam: Comp billet roller, 224º/224º duration at .050, 114 LSA
Lifters: Comp 885 hydraulic roller
Pushrods: Comp 5/16"
Rocker Arms: TA Performance roller, 1.65 ratio
Valve Springs: Comp Beehive
Intake Manifold: Stock, port matched to heads
Throttle Body: Optional
Fuel Injectors: Optional
MAF: Optional
Wiring Harness: Not supplied
PCM: Not supplied
Core Charges: Yes
Warranty: Limited
Price: $8,750.00
Options: Per customer request
Power Output: 600-700 flywheel horsepower


2. 270-Inch Aluminum Turbo V6 Short-Block

Block: TA Performance aluminum w/ductile steel sleeves
Displacement: 270 ci
Compression Ratio: 9.5:1
Crankshaft: 3.625", forged steel
Rods: 6.30" Molner, forged steel
Pistons: Ross forged aluminum, 4.0" bore
Rings: Total Seal ductile moly
Rod Bearings: FM performance
Main Bearings: FM Performance
Cam Bearings: TA Performance double groove
Bolts: ARP
Balanced: Yes
Core Charge: No
Warranty: Limited
Price: $9,999.00
Power Output:1,000+ flywheel horsepower

BUILD RECOMMENDATIONS
Heads: TA Performance SE, 2.02"/1.94" valves, 290 CFM
Head Gaskets: Fel-Pro 1026
Cam: Comp solid roller, 236º/236º duration at .050, 115 LSA
Lifters: TA Performance solid roller
Pushrods: TA Performance 5/16" special
Rocker Arms: A Performance roller paired, 1.75 ratio
Valve Springs: TA Performance 225 lb.
Intake Manifold: Champion
Throttle Body: 3" aluminum

CHEVROLET PERFORMANCE
A story about mail-order engines has to include Chevrolet Performance, previously known as GM Performance Parts. That's because GMPP godfather Ernie Callard created the “crate engine" as we know it back in the early 1970s. These days, Chevrolet Performance proudly continues Ernie's work: it still provides a wide range of crate engines, from classic 350s to their most powerful crate ever—the wicked, 770-horse LSX454Rs.

The LSX454R's high-compression, solid-roller engine was designed for the unique, high-rpm demands of drag racing. Its bottom end includes an LSX Bowtie block and an all-forged rotating assembly, with new LSX DR cylinder heads up top. These 11-degree, six-bolt aluminum heads feature raised ports for huge airflow. And while it comes with a carb-type intake and Dominator-type carb, it can also be converted to a fuel-injected setup.

While it's rated at 770+ horsepower N/A, it is capable of supporting nitrous and other power adders for even greater power.

Slightly smaller but equally ferocious is the LS376/525, which is what you get when you take the aggressive ASA cam—developed for the high-rpm world of circle-track racing—and slip it into an LS3 6.2L engine. The result is excellent throttle response and exceptional high-rpm breathing. And for durability, the cam is complemented with higher-rate valve springs.


3. Chevrolet Performance LSX454REngine

Block: GM LS-series iron small-block (Part Number 19260835)
Displacement:454 ci
Compression Ratio: 13.1:1
Crankshaft: 4.125", 4340 forged steel
Rods: 4340 forged steel
Pistons: 4032 forged aluminum
Rings:   Chevrolet Performance
Rod Bearings: Chevrolet Performance
Main Bearings: Chevrolet Performance
Cam Bearings: Chevrolet Performance
Bolts: 6-bolt, cross-bolted mains
Heads: LSX DR 6-bolt aluminum, 2.25" titanium/1.625" stainless steel valves
Head Gaskets: Chevrolet Performance
Cam: Mechanical roller, 250°/270° at .050, .738"/.738" lift, 110 LSA
Lifters: Chevrolet Performance
Pushrods: Chevrolet Performance
Rocker Arms: Shaft-mount, 1.9 ratio
Valve Springs: Chevrolet Performance
Intake Manifold: Chevrolet Performance
Throttle Body: No
Fuel Injectors: No
MAF: No
Wiring Harness: No
PCM: No
Core Charges: No
Warranty: No
Price: $22,066.43 (Scoggin-Dickey Parts Center price)
Power Output: 770+ flywheel horsepower

RECOMMENDATIONS
Intended for off-road use only, requires 110-octane minimum race fuel, requires LSX Ignition Controller P/N 19171130, oil pan not included (dust shield installed for shipment), LSX 8-bolt crank flange, 58X reluctor wheel, internally balanced, 7100 max rpm


4. Chevrolet Performance LS376/525 Engine

Block: GM LS-series aluminum LS3 (Part Number 19259233)
Displacement: 376 ci
Compression Ratio: 10.7:1
Crankshaft: 3.622", nodular iron
Rods: Powdered metal
Pistons: Hypereutectic aluminum
Rings:   Chevrolet Performance
Rod Bearings: Chevrolet Performance
Main Bearings: Chevrolet Performance
Cam Bearings: Chevrolet Performance
Bolts: 6-bolt, cross-bolted mains
Heads: Aluminum L92-style port, 68cc chambers, 2.165"/1.590" valves
Head Gaskets: Chevrolet Performance
Cam: Hydraulic roller, 226°/236° at .050, .525"/.525" lift, 110 LSA
Lifters: Chevrolet Performance
Pushrods: Chevrolet Performance
Rocker Arms: Investment cast, roller trunnion, 1.7 ratio
Valve Springs: Chevrolet Performance
Intake Manifold: Chevrolet Performance
Throttle Body: Yes
Fuel Injectors: Yes
MAF: No
Wiring Harness: No
PCM: No
Core Charges: No
Warranty: 2 year/50,000 miles
Price: $7,589.80 (Scoggin-Dickey Parts Center price)
Power Output: 525 flywheel horsepower

RECOMMENDATIONS
Assembly does not include any electronics—use LS376/525 Engine Controller Kit P/N 19259261, non-Corvette applications require flexplate P/N 12637677, front-end accessory drive kits are available in two configurations, intended for pre-1976 street vehicles or any off-road vehicle, 92-octane fuel recommended, 6600 max rpm, includes Corvette wet sump oil pan, 58X reluctor wheel, internally balanced

EDELBROCK
Founded in 1938, Torrance-based Edelbrock, LLC is recognized as one of the nation's premier designers, manufacturers, and distributors of performance replacement parts for the automotive aftermarket.

Its LS 416 Long-Block is the same long-block used on Edelbrock's 720-horse E-Force LS Supercharged crate engine. The LS3 block's compact design allows for a seamless swap into most platforms, eliminating the need for engine bay or hood mods.

The complete Edelbrock 416-cube, supercharged LS engine wears the Edelbrock E-Force LS3 supercharger system. It features Eaton TVS 2300 cc/rev rotors, which provide unparalleled efficiency, whisper quiet operation, and OEM reliability. This engine package comes complete with essential supercharger kit components: electric intercooler water pump, intercooler plumbing and recovery tank, fuel rails, 60 lb/hr fuel injectors, mass air flow sensor (MAFS) housing, and a reusable air filter.

This engine produces an astounding 720 horsepower and 695 lb-ft of torque, and the 9.5:1 compression ratio allows for safe and reliable supercharged performance on 91-octane pump gas.


5. GM LS 416 Supercharged Engine

Block: GM LS3 aluminum
Displacement: 416 ci
Compression Ratio: 9.5:1
Crankshaft: 4.0" Manley, forged, balanced
Rods: Manley forged H-Beam
Pistons: Manley forged, 4.065"
Rings:   Total Seal
Rod Bearings: Clevite
Main Bearings: Clevite
Cam Bearings: Clevite
Bolts: ARP
Heads: GM LSA, 68cc chamber, 2.16"/1.59" valves
Head Gaskets: GM
Cam: Hydraulic roller, 215º/247º duration at .050, 629"/656" lift, 121 LSA
Lifters: GM
Pushrods: GM
Rocker Arms: GM
Valve Springs: GM
Intake Manifold: Edelbrock E-Force supercharger
Throttle Body: Yes
Fuel Injectors: Yes
MAF: Yes
Wiring Harness: Yes
PCM: Yes
Core Charges: No
Warranty: 2 Year, unlimited mileage
Price: $17,999.87-$ 22,459.87
Power Output: 720 flywheel horsepower and 695 lb-ft of torque
Options: Available in four configurations: Engine only (pn 46730) Engine with accessory drive (pn 46740) Engine with electronics only (pn 46750) Engine with accessories and electronics (pn 46760)


6. GM LS 416 Long-Block

Block: GM LS3 aluminum
Displacement: 416 ci
Compression Ratio: 9.5:1
Crankshaft: 4.0" Manley, forged, balanced
Rods: Manley forged H-Beam
Pistons: Manley forged, 4.065"
Rings: Total Seal
Rod Bearings: Clevite
Main Bearings: Clevite
Cam Bearings: Clevite
Bolts: ARP
Heads: GM LSA, 68cc chamber, 2.16"/1.59" valves
Head Gaskets: GM
Cam: Hydraulic roller, 215º/247º duration at .050, 629"/656" lift, 121 LSA
Lifters: GM
Pushrods: GM
Rocker Arms: GM
Valve Springs: GM
Intake Manifold: No
Throttle Body: No
Fuel Injectors: No
MAF: No
Wiring Harness: No
PCM: No
Core Charges: No
Warranty: 2 year, unlimited mileage
Price: $13,457.99
Options: Call
Power Output: 720 flywheel horsepower, 695 lb-ft torque (with Edelbrock's E-Force supercharger system)

GOLEN ENGINE
LT and LS specialist Golen Engine is located in Hudson, New Hampshire. Within his 12,000-square foot shop, owner Chad Golen does everything from machine work, to engine building, to dyno testing.

Golen offers street and race LSs and 1990s-era LTs, in either short-block or long-block form. For LT short-blocks, the Street/Strip Series 383 makes up to 500hp, and the all-forged Competition version for NOS and boost guys handles up to 750hp. There's also an all-forged, 396 Competition short-block for up to 600hp naturally aspirated horsepower. Custom builds can also be built.

In LT long-blocks, the 383s range from 400hp to 440hp to 500hp, and they also offer a boosted version that can handle up to 750hp and 15 psi of boost. And a 396/550hp is available with AFR's CNC-ported heads. All of these engines are very street friendly, running on 91-octane pump fuel, and carrying a three-year warranty as well.


7. 396-Inch Iron LT1 Competition Short-Block

Block: GM LT1 iron
Displacement: 396 ci
Compression Ratio: Determined by heads you use
Crankshaft: 3.875" Scat, 4340 forged steel
Rods: 6" Scat, 4340 forged H-Beam, ARP bolts
Pistons: Mahle Motorsports forged, with coated skirts
Rings: Mahle Motorsports plasma moly
Rod Bearings: Clevite H-Series Performance
Main Bearings: Clevite H-Series Performance
Cam Bearings:  Durabond Performance
Bolts: ARP main studs, 4-bolt mains
Balanced: Internal balance
Core Charge: No
Warranty: Three years
Price: $3,999 
Power Output: Up to 750 flywheel horsepower

BUILD RECOMMENDATIONS
Please call

LIVERNOIS MOTORSPORTS & ENGINEERING
Livernois Motorsports & Engineering has 10-plus years of building championship race winning engines. Their extensive experience with every aspect of the engine building process results in the highest quality performance engines available.

They use a state-of-the-art CNC machining center for all block machine work, and the engine build department is a dedicated, climate-controlled clean room with a stringent quality control process.

Their Pro-Series and Street Series lines of engines are LS-based mills. The Pro-Series line offers the best components and full race prep during the machining and build process. The Street Series line offers a combination of quality components and prep work, performance and durability, and a lower price point for those on a tighter budget.

Whether you need a 500-horse N/A LS street engine or a twin turbo/blower combo pushing 2,000 ponies, Livernois has a package for every application.


8. 383-Inch Iron LT1 Long-Block

Block: GM LT1 iron
Displacement: 383 ci
Compression Ratio: 11.5:1
Crankshaft: 3.750" Scat, cast steel, internal balance
Rods: 6" Scat, 4340 forged steel I-Beam, ARP bolts
Pistons: Mahle Motorsports forged, with coated skirts
Rings: Mahle Motorsports plasma moly
Rod Bearings: Clevite H-Series Performance
Main Bearings: Clevite H-Series Performance
Cam Bearings: Durabond Performance
Bolts: ARP main studs and head bolts
Heads: New GM aluminum, Stage 2 ported, 2.00"/1.56" Manley stainless steel valves
Head Gaskets: Fel-Pro Performance
Cam: Comp Cams hydraulic roller, custom specs
Lifters: Comp Cams hydraulic roller
Pushrods: Comp Cams Magnum
Rocker Arms: Comp Cams Ultra Pro Magnum, 1.6 ratio, ARP 7/16 rocker studs with hardened guide plates
Valve Springs: Lunati double polished
Intake Manifold: Optional ported LT1 intake, $350
Throttle Body: Optional Holley Billet 58mm, $380
Fuel Injectors: Optional Bosch 36lb, $375
MAF: Optional 3.5" GM MAF sensor
Wiring Harness: N/A (customer will use their own)
PCM: N/A (customer will use their own)
Core Charges: No
Warranty: Three years
Price: $6,999
Power Output: 500 flywheel horsepower