Performance Engine Specials
Call the Parts Department for more information on the great deals below: 403-527-2787.
350/290 HP Economy Performance Engine - An Affordable Classic!
MSRP: $2,866.00
Davis Web Special: $2,295.00
- All-New Engine-Not a Rebuild
- Four-Bolt Block
- L82 Camshaft
- 290 Horsepower
- 332 Lb-Ft Torque
- 2 Year/80,000km Warranty
The best value crate engine in the GM Performance Parts lineup!
The 350/290 HP is the most popular GM Performance Parts crate engine because no one can deliver such performance for this kind of value. GM Performance Parts believes that everyone should be able to afford a high quality, high performance GM V-8 without going broke. The 350/290 is an answer to those car crafters who demand maximum return on their money. However, just because it's affordable, don't think that it's a stone. The 350/290 delivers 290 hp @ 5100 rpm and a solid 332 lb.-ft. of torque at 3750 rpm. With those kinds of numbers, it's the perfect replacement engine for the millions of GM vehicles that shipped with a small-block. Got a tired, old project car that needs a lift? This is the crate engine for you.
We've also loaded the 350/290 with a four-bolt main bearing block, aluminum pistons, and a hydraulic camshaft. The cast iron cylinder heads are designed to be extremely durable while still providing good airflow through the engine.
The 350/290 will ship to you as a Base-level long block. Add an intake manifold, carburetor, ignition system, starter, balancer, and water pump, and you'll be ready to hit the road with a fresh new motor. All of these parts are available from GM Performance Parts, and with its low price, you'll have no problem finishing off the 350/290 in style.
350 HO Deluxe - A classic 350 only with MORE POWER!
MSRP: $5,537.75
Davis Web Special: $4,795.00
- Vortec Heads
- Four-Bolt Block
- Dual-Pattern Camshaft
- 330 Horsepower
- 380 Lb-Ft Torque
- 2 Year/80,00km Warranty
A 350 that's been stepped up in power!
You won't go broke finishing off your project car with our 350 HO Turn-Key crate engine! It's packed with all the features you need to get a reliable 330 horsepower and 380 lb.-ft. of torque from a dependable, time-tested combination of GM Performance Parts. Of course, all of the components used in this engine are brand new – not remanufactured parts like the competition is trying to sell you. Designed by our in-house engineers to give you maximum return for your hot rod dollar, the 350 HO Turn-Key is a great choice for your small-block crate engine needs.
The 350 HO is based on a tough, Chevy four-bolt block that holds a strong nodular iron crankshaft, good rods, and aluminum pistons. The high-lift camshaft gives the engine its own unique, aggressive idle. The cam is based on the same one found in 1965-67 Corvette 327 engines, but it has even more lift and duration.
Complete from top to bottom, the 350 HO comes pre-assembled with the intake manifold, carburetor, water pump, and distributor. With the Turn-Key trim level, you also get everything you need for a complete, running engine right out of the crate. We ship it with an accessory drive package, fuel pump, starter, and spark plug wires included in the package (not installed). The 350 HO Turn-Key crate engine offers you an incredible performance value – all you need to do is add the fuel and enjoy!
LSX 376 High Performance Engine - The New Small-Block for the 21st Century
MSRP: $7,932.00
Davis Web Special: $5,995.00
- Race-Bred LSX Bowtie Block
- High-Flow LS3 Cylinder Heads
- Unique LSX 376 Valve Covers
- 450HP/444TQ
- 24 Month/80,000 km Warranty
The Affordable LSX Crate Engine Has Arrived!
GM Performance Parts takes the economical LSX Bowtie block and combines it with the LS3’s high-flow L92-style heads and mostly internal components (we swap the pistons for forged parts), to create the affordable, high-revving LSX376 crate engine. It represents the essence of LS performance—exceptional airflow capability in straightforward packaging that delivers huge performance without a power-adder. We deliver the LS376 without an intake manifold (and other accessories). So, whether you top the engine with a carburetor or production-style injection system, it’s suitable for your street rod, ’57 Chevy or ’71 Camaro —be it on the street or strip. Our horsepower and torque ratings are based on using the productionstyle injection system. More power can be realized by swapping that for one of our carburetor intakes and a well-tuned Holley four-barrel.
ZZ383 High Performance Engine - Maximum small-block performance
MSRP: $7,707.50
Davis Web Special: $6,195.00
- 4340 Forged Steel Crank
- Hydraulic Roller Cam
- Fast Burn Heads
- 425 Horsepower
- 449 Lb-Ft Torque
- 2 Year/80,000km Warranty
Big-block style power from a small block engine!
If you're looking for a small-block Chevy that makes big-block power, we've got the engine for you! For the ultimate GM Performance Parts small-block crate engine, choose the ZZ383 a combination of Fast Burn aluminum performance heads and a 383 stroker small-block that adds up to 425 horsepower and 449 lb.-ft. of torque.
A carefully engineered balance of torque-producing bottom-end power and horsepower-inducing Fast Burn cylinder heads combine for the ZZ383/425's stellar performance statistics. The Fast Burn heads have large 2.00/1.55 valves and specially designed chambers that draw in lots of air and fuel, burning the mixture quickly and completely. It's a combination that generates great mid- and high-rpm power, which, when combined with the 383-cubic-inch displacement, creates an awesome all-around performer.
The ZZ383 has a specially machined engine block and 3.80-stroke crankshaft, which produce 383 cubic inches of pure performance. The reciprocating assembly is comprised of heavy-duty components including a 4340, nitrided, and induction-hardened forged crankshaft, and unique, heavy-duty powdered metal rods. It's 425 horses of bulletproof performance.
With the ZZ383/425, you get the power of a big-block with the size and weight of an aluminum-headed small-block. If you've never driven a car with a stroked small-block and the top end components to support it, now is your chance!
ZZ4 350 Turn-Key with Aluminum Heads - Grab power at an affordable price
MSRP: $7,367.75
Davis Web Special: $5,995.00
- Forged steel crankshaft
- Aluminum Corvette heads
- 355 Horsepower
- 405 Lb-Ft Torque
- Turn-Key option!
- 2 Year/80,000km Warranty
An aluminum-headed 350 that makes 355 horse!
As far as crate engines go, this one is a winner. The ZZ4 350 Turn-Key crate engine has been one of our most popular high performance crate engines since we started GM Performance Parts. Its legendary status is based on an incredible performance level that is stone cold reliable. We've packed the ZZ4 350 crate engine with a forged steel crankshaft, hypereutectic pistons, hydraulic roller camshaft and lifters, and aluminum cylinder heads. The ZZ4's Corvette-derived high-performance heads feature high velocity intake runners and D-shaped exhaust ports to promote efficient and unobstructed flow through the engine providing strong power and torque at all rpm levels.
The ZZ4 350 is delivered with an aluminum dual-plane intake manifold, HEI distributor, cast iron water pump, dampener, and flexplate. Our Turn-Key ZZ4 350 crate engine also ships with all the parts you need to get it running. That includes an accessory drive package, fuel pump, chrome air cleaner kit, Holley 770-cfm carburetor, starter, and spark plug wires.
The ZZ4 comes to you with a full 355 horsepower and 405 lb.-ft. of torque. With its high level of performance and durability, it could very well be the perfect crate engine-able to meet the needs of car builders from all phases of the motorsports world.
ZZ572/720R Deluxe - The nuclear option for the strip
MSRP: $20,650.00
Davis Web Special: $16,449.00
- Baddest Rat On The Block
- Roller Cam With .714 Lift
- 720 Horsepower
- 685 Lb-Ft Torque
- The R Stands For RACE!
- Did we mention 720 Horsepower?
The ultimate beast!
Make no mistake, the ZZ572/720R is a race motor. It delivers a resounding 720 horsepower and 685 lb.-ft. of torque creating at the same time the most powerful big-block crate engine ever offered by GM Performance Parts.
We took the ultra-popular ZZ572/620 pump gas street engine added 12:1 compression pistons, a hotter camshaft, and our rectangular-port aluminum Bowtie heads with stiffer valve springs to work with the new cam. The block is the Gen VI tall-deck Bowtie block, which was designed for the 572 application. The solid roller camshaft is a .714 lift magic maker that aggressively feeds the air/fuel mixture into the hungry, high-squeeze, stroker big-block. This creates a rev-happy monster that rocks to a 6750 rpm redline, leaving the competition in its wake.
The ZZ572/720R is rated at 720 horsepower at 6250 rpm and 685 lb.-ft. of torque at 4500 rpm. The short block is built with the best heavy-duty parts in the GM Performance Parts part bin, including a 4340 forged steel crankshaft, shot-peened forged steel rods, forged aluminum pistons with full-floating wrist pins, stiff dual valve springs, and a louvered oiling windage tray. Our Deluxe ZZ572/720R ships with a Holley 1090 Dominator-style carburetor, tall-deck single-plane intake manifold, HEI distributor, aluminum short-style water pump, and 8mm spark plug wires. Distinctive '572 CHEVROLET' cast aluminum valve covers complete the package. GM Performance Parts integrated, durability-tested, and validated this combination to the described performance levels, and all you need is a GM Performance Parts lightweight starter to fire it up!
New LSX454 Rocks Main Street With 600-Plus Horsepower!
MSRP: $12,906.00
Davis Web Special: $10,499.00
- New LSX Forged Rotating Parts
- New 6-Bolt LSX Cylinder Heads
- 620HP/590LB-FT Torque
A classic cubic-inch combination with the latest LS engine technology!
One of the most legendary engines in muscle car history is the Chevy 454 Big-Block. With the LSX Bowtie block, GM Performance Parts engineers were able to build a 21st century 454 with the latest technology-and it requires no more space under the hood than a production LS engine. It's perfect as the power plant for a late-model Camaro drag car or a high-tech retro-fit for a '70Chevelle pro-touring machine.
The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our new, deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, all-new orange powder coated valve covers with engraved "LSX454" logos.
GMPP delivers the LSX454 without an intake manifold and other accessories. With a carburetor and high-flow GM Performance Parts intake manifold, the LSX454 is good for about 620 horsepower and 590 lb-ft of torque-or about 580 hp and 600 lb-ft with fuel injection.
Anniversary 427 - #357 of 427 Produced! - The Spirit of the ZL1
MSRP: $32,637.50
Davis Web Special: $28,449.00
- ZL1 Heritage
- Limited Production
- Authenticating Owner’s Kit
- Celebrate 50 Years of Big-Blocks
- 24-month GMPP Warranty
The legend of the all-aluminum big block continues!
The year was 1969, and the musclecar wars were in full swing. Each one of the big three had developed their own version of the ultimate high performance big block engine. Then, GM unleashed the ZL1, the most powerful engine ever released by General Motors. Based on an exotic aluminum block, the ZL1 offered only the best components from the L88 engine including a high compression piston, high flow aluminum heads and intake, and a bombproof bottom end. To celebrate the 50th anniversary of the Chevrolet big block, GM Performance Parts has brought back a modern version of the ZL1 for your chance to relive musclecar history.
The Anniversary Edition 427 starts with a retooled version of the ZL1 aluminum block using the exact same tooling that helped create this legend in 1969. The advantage of the aluminum block is that it offers the completed engine the weight of a small block with a whole lot more power. The block offers a full-strength structure including thick deck surfaces and 4-bolt mains.
Building on that foundation, the short block contains a forged steel crank, forged steel rods, and forged aluminum pistons for a 9.5:1 final compression ratio. Aluminum, oval port heads have a 110 cc combustion chamber and carry 2.19-inch intake and 1.88-inch exhaust valves. A matching, high-flow aluminum oval-port intake feeds the heads with the help of an 870 cfm carburetor. The camshaft is a hydraulic roller with valve lift numbers of .510-inch on the intake and .540-inch on the exhaust. We even added 1.7:1 aluminum roller rockers. Like the original ZL1, the Anniversary 427 comes grossly underrated at 430 horsepower.
With a full list of features, this modern ZL1 is one of the most exclusive big block crate engines ever offered by GM Performance Parts. But, we didn't stop with just a great engine! Once you purchase an Anniversary 427 big block crate engine, you enter a very exclusive club because only 427 of these engines will ever be produced. To document the rarity of this engine, GM Performance Parts will include a complete owner's kit with each of these engines. In that kit, you'll find official Anniversary 427 emblems to place on your car as well as an engine data plaque and certificate of authenticity that share a matching serial number with the valve covers.
Only 427 of these crate engines will ever be produced, and then the ZL1 tooling will be retired forever. We hope that you will be one of the elite hot rodders to celebrate the anniversary of the big block Chevy with GM Performance Parts.
Performance Engine Specials
Call the Parts Department for more information on the great deals below: 403-527-2787.
350/290 HP Economy Performance Engine - An Affordable Classic!
MSRP: $2,866.00
Davis Web Special: $2,295.00
- All-New Engine-Not a Rebuild
- Four-Bolt Block
- L82 Camshaft
- 290 Horsepower
- 332 Lb-Ft Torque
- 2 Year/80,000km Warranty
The best value crate engine in the GM Performance Parts lineup!
The 350/290 HP is the most popular GM Performance Parts crate engine because no one can deliver such performance for this kind of value. GM Performance Parts believes that everyone should be able to afford a high quality, high performance GM V-8 without going broke. The 350/290 is an answer to those car crafters who demand maximum return on their money. However, just because it's affordable, don't think that it's a stone. The 350/290 delivers 290 hp @ 5100 rpm and a solid 332 lb.-ft. of torque at 3750 rpm. With those kinds of numbers, it's the perfect replacement engine for the millions of GM vehicles that shipped with a small-block. Got a tired, old project car that needs a lift? This is the crate engine for you.
We've also loaded the 350/290 with a four-bolt main bearing block, aluminum pistons, and a hydraulic camshaft. The cast iron cylinder heads are designed to be extremely durable while still providing good airflow through the engine.
The 350/290 will ship to you as a Base-level long block. Add an intake manifold, carburetor, ignition system, starter, balancer, and water pump, and you'll be ready to hit the road with a fresh new motor. All of these parts are available from GM Performance Parts, and with its low price, you'll have no problem finishing off the 350/290 in style.
350 HO Deluxe - A classic 350 only with MORE POWER!
MSRP: $5,537.75
Davis Web Special: $4,795.00
- Vortec Heads
- Four-Bolt Block
- Dual-Pattern Camshaft
- 330 Horsepower
- 380 Lb-Ft Torque
- 2 Year/80,00km Warranty
A 350 that's been stepped up in power!
You won't go broke finishing off your project car with our 350 HO Turn-Key crate engine! It's packed with all the features you need to get a reliable 330 horsepower and 380 lb.-ft. of torque from a dependable, time-tested combination of GM Performance Parts. Of course, all of the components used in this engine are brand new – not remanufactured parts like the competition is trying to sell you. Designed by our in-house engineers to give you maximum return for your hot rod dollar, the 350 HO Turn-Key is a great choice for your small-block crate engine needs.
The 350 HO is based on a tough, Chevy four-bolt block that holds a strong nodular iron crankshaft, good rods, and aluminum pistons. The high-lift camshaft gives the engine its own unique, aggressive idle. The cam is based on the same one found in 1965-67 Corvette 327 engines, but it has even more lift and duration.
Complete from top to bottom, the 350 HO comes pre-assembled with the intake manifold, carburetor, water pump, and distributor. With the Turn-Key trim level, you also get everything you need for a complete, running engine right out of the crate. We ship it with an accessory drive package, fuel pump, starter, and spark plug wires included in the package (not installed). The 350 HO Turn-Key crate engine offers you an incredible performance value – all you need to do is add the fuel and enjoy!
LSX 376 High Performance Engine - The New Small-Block for the 21st Century
MSRP: $7,932.00
Davis Web Special: $5,995.00
- Race-Bred LSX Bowtie Block
- High-Flow LS3 Cylinder Heads
- Unique LSX 376 Valve Covers
- 450HP/444TQ
- 24 Month/80,000 km Warranty
The Affordable LSX Crate Engine Has Arrived!
GM Performance Parts takes the economical LSX Bowtie block and combines it with the LS3’s high-flow L92-style heads and mostly internal components (we swap the pistons for forged parts), to create the affordable, high-revving LSX376 crate engine. It represents the essence of LS performance—exceptional airflow capability in straightforward packaging that delivers huge performance without a power-adder. We deliver the LS376 without an intake manifold (and other accessories). So, whether you top the engine with a carburetor or production-style injection system, it’s suitable for your street rod, ’57 Chevy or ’71 Camaro —be it on the street or strip. Our horsepower and torque ratings are based on using the productionstyle injection system. More power can be realized by swapping that for one of our carburetor intakes and a well-tuned Holley four-barrel.
ZZ383 High Performance Engine - Maximum small-block performance
MSRP: $7,707.50
Davis Web Special: $6,195.00
- 4340 Forged Steel Crank
- Hydraulic Roller Cam
- Fast Burn Heads
- 425 Horsepower
- 449 Lb-Ft Torque
- 2 Year/80,000km Warranty
Big-block style power from a small block engine!
If you're looking for a small-block Chevy that makes big-block power, we've got the engine for you! For the ultimate GM Performance Parts small-block crate engine, choose the ZZ383 a combination of Fast Burn aluminum performance heads and a 383 stroker small-block that adds up to 425 horsepower and 449 lb.-ft. of torque.
A carefully engineered balance of torque-producing bottom-end power and horsepower-inducing Fast Burn cylinder heads combine for the ZZ383/425's stellar performance statistics. The Fast Burn heads have large 2.00/1.55 valves and specially designed chambers that draw in lots of air and fuel, burning the mixture quickly and completely. It's a combination that generates great mid- and high-rpm power, which, when combined with the 383-cubic-inch displacement, creates an awesome all-around performer.
The ZZ383 has a specially machined engine block and 3.80-stroke crankshaft, which produce 383 cubic inches of pure performance. The reciprocating assembly is comprised of heavy-duty components including a 4340, nitrided, and induction-hardened forged crankshaft, and unique, heavy-duty powdered metal rods. It's 425 horses of bulletproof performance.
With the ZZ383/425, you get the power of a big-block with the size and weight of an aluminum-headed small-block. If you've never driven a car with a stroked small-block and the top end components to support it, now is your chance!
ZZ4 350 Turn-Key with Aluminum Heads - Grab power at an affordable price
MSRP: $7,367.75
Davis Web Special: $5,995.00
- Forged steel crankshaft
- Aluminum Corvette heads
- 355 Horsepower
- 405 Lb-Ft Torque
- Turn-Key option!
- 2 Year/80,000km Warranty
An aluminum-headed 350 that makes 355 horse!
As far as crate engines go, this one is a winner. The ZZ4 350 Turn-Key crate engine has been one of our most popular high performance crate engines since we started GM Performance Parts. Its legendary status is based on an incredible performance level that is stone cold reliable. We've packed the ZZ4 350 crate engine with a forged steel crankshaft, hypereutectic pistons, hydraulic roller camshaft and lifters, and aluminum cylinder heads. The ZZ4's Corvette-derived high-performance heads feature high velocity intake runners and D-shaped exhaust ports to promote efficient and unobstructed flow through the engine providing strong power and torque at all rpm levels.
The ZZ4 350 is delivered with an aluminum dual-plane intake manifold, HEI distributor, cast iron water pump, dampener, and flexplate. Our Turn-Key ZZ4 350 crate engine also ships with all the parts you need to get it running. That includes an accessory drive package, fuel pump, chrome air cleaner kit, Holley 770-cfm carburetor, starter, and spark plug wires.
The ZZ4 comes to you with a full 355 horsepower and 405 lb.-ft. of torque. With its high level of performance and durability, it could very well be the perfect crate engine-able to meet the needs of car builders from all phases of the motorsports world.
ZZ572/720R Deluxe - The nuclear option for the strip
MSRP: $20,650.00
Davis Web Special: $16,449.00
- Baddest Rat On The Block
- Roller Cam With .714 Lift
- 720 Horsepower
- 685 Lb-Ft Torque
- The R Stands For RACE!
- Did we mention 720 Horsepower?
The ultimate beast!
Make no mistake, the ZZ572/720R is a race motor. It delivers a resounding 720 horsepower and 685 lb.-ft. of torque creating at the same time the most powerful big-block crate engine ever offered by GM Performance Parts.
We took the ultra-popular ZZ572/620 pump gas street engine added 12:1 compression pistons, a hotter camshaft, and our rectangular-port aluminum Bowtie heads with stiffer valve springs to work with the new cam. The block is the Gen VI tall-deck Bowtie block, which was designed for the 572 application. The solid roller camshaft is a .714 lift magic maker that aggressively feeds the air/fuel mixture into the hungry, high-squeeze, stroker big-block. This creates a rev-happy monster that rocks to a 6750 rpm redline, leaving the competition in its wake.
The ZZ572/720R is rated at 720 horsepower at 6250 rpm and 685 lb.-ft. of torque at 4500 rpm. The short block is built with the best heavy-duty parts in the GM Performance Parts part bin, including a 4340 forged steel crankshaft, shot-peened forged steel rods, forged aluminum pistons with full-floating wrist pins, stiff dual valve springs, and a louvered oiling windage tray. Our Deluxe ZZ572/720R ships with a Holley 1090 Dominator-style carburetor, tall-deck single-plane intake manifold, HEI distributor, aluminum short-style water pump, and 8mm spark plug wires. Distinctive '572 CHEVROLET' cast aluminum valve covers complete the package. GM Performance Parts integrated, durability-tested, and validated this combination to the described performance levels, and all you need is a GM Performance Parts lightweight starter to fire it up!
New LSX454 Rocks Main Street With 600-Plus Horsepower!
MSRP: $12,906.00
Davis Web Special: $10,499.00
- New LSX Forged Rotating Parts
- New 6-Bolt LSX Cylinder Heads
- 620HP/590LB-FT Torque
A classic cubic-inch combination with the latest LS engine technology!
One of the most legendary engines in muscle car history is the Chevy 454 Big-Block. With the LSX Bowtie block, GM Performance Parts engineers were able to build a 21st century 454 with the latest technology-and it requires no more space under the hood than a production LS engine. It's perfect as the power plant for a late-model Camaro drag car or a high-tech retro-fit for a '70Chevelle pro-touring machine.
The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our new, deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, all-new orange powder coated valve covers with engraved "LSX454" logos.
GMPP delivers the LSX454 without an intake manifold and other accessories. With a carburetor and high-flow GM Performance Parts intake manifold, the LSX454 is good for about 620 horsepower and 590 lb-ft of torque-or about 580 hp and 600 lb-ft with fuel injection.
Anniversary 427 - #357 of 427 Produced! - The Spirit of the ZL1
MSRP: $32,637.50
Davis Web Special: $28,449.00
- ZL1 Heritage
- Limited Production
- Authenticating Owner’s Kit
- Celebrate 50 Years of Big-Blocks
- 24-month GMPP Warranty
The legend of the all-aluminum big block continues!
The year was 1969, and the musclecar wars were in full swing. Each one of the big three had developed their own version of the ultimate high performance big block engine. Then, GM unleashed the ZL1, the most powerful engine ever released by General Motors. Based on an exotic aluminum block, the ZL1 offered only the best components from the L88 engine including a high compression piston, high flow aluminum heads and intake, and a bombproof bottom end. To celebrate the 50th anniversary of the Chevrolet big block, GM Performance Parts has brought back a modern version of the ZL1 for your chance to relive musclecar history.
The Anniversary Edition 427 starts with a retooled version of the ZL1 aluminum block using the exact same tooling that helped create this legend in 1969. The advantage of the aluminum block is that it offers the completed engine the weight of a small block with a whole lot more power. The block offers a full-strength structure including thick deck surfaces and 4-bolt mains.
Building on that foundation, the short block contains a forged steel crank, forged steel rods, and forged aluminum pistons for a 9.5:1 final compression ratio. Aluminum, oval port heads have a 110 cc combustion chamber and carry 2.19-inch intake and 1.88-inch exhaust valves. A matching, high-flow aluminum oval-port intake feeds the heads with the help of an 870 cfm carburetor. The camshaft is a hydraulic roller with valve lift numbers of .510-inch on the intake and .540-inch on the exhaust. We even added 1.7:1 aluminum roller rockers. Like the original ZL1, the Anniversary 427 comes grossly underrated at 430 horsepower.
With a full list of features, this modern ZL1 is one of the most exclusive big block crate engines ever offered by GM Performance Parts. But, we didn't stop with just a great engine! Once you purchase an Anniversary 427 big block crate engine, you enter a very exclusive club because only 427 of these engines will ever be produced. To document the rarity of this engine, GM Performance Parts will include a complete owner's kit with each of these engines. In that kit, you'll find official Anniversary 427 emblems to place on your car as well as an engine data plaque and certificate of authenticity that share a matching serial number with the valve covers.
Only 427 of these crate engines will ever be produced, and then the ZL1 tooling will be retired forever. We hope that you will be one of the elite hot rodders to celebrate the anniversary of the big block Chevy with GM Performance Parts.