big block engines

BIG-BLOCK
BLOCKS AND COMPONENTS

Reign supreme

When torque is king, choose factor-engineered Big-Block power from Chevrolet Performance.

PRODUCTION-BASED BLOCKS

The classic Big-Block production engine was introduced in 1965. Cylinder-block casting combines traditional Big-Block heritage and modern production techniques for 21st-century performance.

BOWTIE SPORTSMAN BLOCKS

Born from a full line of high-quality, precision-machined components based on performance-proven GM designs, a Bowtie Sportsman block packs big power and long-lasting reliability ideal for drag racers and street machines.

Bowtie Sportsman Block Technical Notes

  • Available in short-deck (9.800”) or tall-deck (10.200”) configurations
  • Blocks have clearance for 4,500” tolerance
  • CNC-machined to +/- .005” tolerance
  • Siamese cylinder bores
  • Bore finishers are ready to bore to size
  • Machined for mechanical fuel pump
  • Machined for hydraulic roller and flat tappets
  • Nodular iron 4-bolt main caps splayed 16-degrees on the three center mains
  • Priority main oiling system
  • Blocks with a 1-piece Rear Main Seal use the 6-bolt, Gen VI-style front cover (P/N 10230954) and Gen VI-style oil pan
  • Blocks with a 2-piece Rear Main Seal use the 10-bolt, Mark IV-style front cover and Mark IV-style oil pan

ZL1 ALUMINUM BIG-BLOCK

Built from premium materials and precision machined to blueprinted specifications, this fabled aluminum 427-cubic-inch Big-Block lets mere mortals experience the raw horsepower and tremendous torque of the ZL1. 

ZL1 Aluminum Block Technical Notes

  • 356- T6M Aluminum block
  • Standard deck height (9.800")
  • 4.300" maximum bore
  • 4.240" finished bore
  • 4.375" maximum stroke
  • Siamese cylinder walls
  • Centrifugally spun cast-iron cylinder sleeves
  • Steel 4-bolt main caps splayed 16° on the three center mains (dowel located)
  • Provision for hydraulic roller camshafts
  • AN O-ring oil and water plugs
  • Tested to 650 horsepower

CAST-IRON BOWTIE RACE BLOCKS

With thick deck surfaces and splayed 4-bolt steel bearing caps, a cast-iron Bowtie Race Block is the starting point for drag racers looking for custom-machined performance.

Cast-Iron Bowtie Race Block Technical Notes

  • Precision CNC-machining means +/- 0.005" tolerances
  • Blocks are available in short deck (9.800") or tall deck (10.200")
  • A sonic bore check data sheet is provided with each block
  • Siamese cylinder bores
  • Improved cooling around number-1 cylinder
  • Accepts Mark IV or Gen V, VI cylinder heads
  • Use Gen V head gaskets with Mark IV and Gen V cylinder heads
  • Use Gen VI head gaskets with Gen VI cylinder heads
  • Requires Mark IV design 2-piece rear main seal oil pans
  • Requires Mark IV design crankshafts
  • Can use Mark IV and Gen V, VI camshafts, timing sets, lifters and timing cover (aftermarket belt-drive timing covers may require clearancing)
  • Blind-tapped head bolt holes; extra inner head bolt bosses provided
  • 4-bolt SAE 8620 main caps splayed 16° on the three center mains
  • Priority main oiling wet-sump system
  • Provisions for dry-sump oil line provided
  • Honed camshaft and crankshaft bores
  • 0.842" lifter bores (maximum 1.06") may be relocated
  • Distributor gear clearance at bottom of number-8 cylinder bore should be checked
  • Machined mechanical fuel pump pad

BIG-BLOCK DRCE BLOCKS

Specifically designed with 500-cubic-inch Pro Stock engines in mind, the DRCE (Drag Racing Competition Engine) family of Big-Blocks is the foundation of many Pro Stock drag-racing engines.

DRCE Block Technical Notes

  • CNC-machined to +/- 0.005" tolerance
  • Siamese cylinder bores with 4.900" spacing
  • No lifter bosses, solid bar can be drilled as required
  • No head-bolt holes
  • Numbers two and four main bearing bulkheads moved 0.060"
  • Bellhousing bolt pattern accommodates Chevy and Pontiac/Olds transmissions
  • Uses Big-Block Chevrolet crank, camshaft, balancer, flywheel and water pump
  • Requires camshaft with distributor gear behind rear bearing
  • Priority main oiling dry-sump system
  • Dual starter mounting locations
  • Front-engine mounts only
  • Each block is supplied with sonic test data sheet

CYLINDER BLOCK COMPONENTS
  

Learn More

FRONT COVER, TIMING POINTERS, FUEL PUMP BLOCK-OFF PLATE

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

  • With 5.3L EcoTec3 V8 engine. Based on GM Large SUV segment and EPA-estimated MPG highway: 23 (2WD), 22 (4WD).

  • EPA-estimated MPG city/highway: Sonic with 1.8L engine and 5-speed manual transmission 26/35; with 1.8L engine and 6-speed automatic transmission 25/34; with 1.4L engine and 6-speed manual transmission 28/37; with 1.4L engine and 6-speed automatic transmission 27/35.

  • EPA-estimated 53-mile range based on 106 MPGe combined city/highway (electric); 367-mile extended range based on 42 MPG combined city/highway (gas). Your actual range may vary based on several factors, including temperature, terrain and driving technique.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

  • MyLink functionality varies by model. Full functionality requires compatible Bluetooth and smartphone, and USB connectivity for some devices.

  • Do not use summer-only tires in winter conditions, as it would adversely affect vehicle safety, performance and durability. Use only GM-approved tire and wheel combinations. Unapproved combinations may change the vehicle’s performance characteristics. For important tire and wheel information, go to my.chevrolet.com/learn/tires or see your dealer.

  • Dependability based on longevity: 1987 – July 2017 full-size pickup registrations.

  • With rear seats folded. Cargo and load capacity limited by weight and distribution

  • EPA-estimated 29 MPG city/39 highway with 5-speed manual transmission and 30 MPG city/38 highway with available Continuously Variable Transmission

  • EPA-estimated 29 MPG city/38 highway with 5-speed manual transmission and 30 MPG city/38 highway with available Continuously Variable Transmission.

  • EPA estimated with 3.6L V6 engine.

  • Cargo and load capacity limited by weight and distribution.

  • EPA estimated with 3.6L V6 engine

  • Chevrolet Infotainment System functionality varies by model. Full functionality requires compatible Bluetooth and smartphone, and USB connectivity for some devices.

  • Vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay, Siri, iPhone and iTunes are trademarks for Apple Inc, registered in the U.S. and other countries.

  • Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner’s Manual for more information.

  • EPA estimate for Sonic with available 6-speed automatic transmission.

  • With rear seats folded. Cargo and load capacity limited by weight and distribution.

  • Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See your vehicle Owner’s Manual for more information.

  • Connected Services include navigation services and Remote Access Plan, and 1 month/3 GB of 4G LTE data (whichever comes first) from vehicle delivery date. Services are subject to User Terms and limitations. Certain services require working electrical system, cell service and GPS signals. OnStar links to emergency services. Visit onstar.com for more details.

  • Model year 2018 and newer vehicles include: 1 month of OnStar Safety & Security Plan and 1 month of Chevrolet Connected Services which include navigation services, Remote Access Plan and 1 month or 3 gigabytes of 4G LTE data (whichever comes first) from vehicle delivery date. Services are subject to user terms and limitations. Visit onstar.com for more details. Data plans offered by AT&T. Availability subject to change.

  • Connected Services include navigation services and Remote Access Plan, and 1 month/3 GB of 4G LTE data (whichever comes first) from vehicle delivery date. Data plan offered by AT&T. Services subject to user terms and limitations. Certain services require working electrical system, cell service, and GPS signal. OnStar links to emergency services.  Visit onstar.com for more details.

  • If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. To cancel you must call SiriusXM at 1-866-635-2349. See SiriusXM Customer Agreement for complete terms at siriusxm.com. All fees and programming subject to change. Sirius, XM, SiriusXM and all related marks and logos are trademarks of Sirius XM Radio Inc.

  • With rear seats folded. Cargo and load capacity limited by weight and distribution.

  • EPA-estimated 238-mile EV range. Your actual range may vary based on several factors including temperature, terrain, and driving technique.

  • With second row seats folded flat. Cargo and load capacity limited by weight and distribution.

  • EPA-estimated 238-mile EV range. Your actual range may vary based on several factors including temperature, terrain, and conditions.

  • Read your vehicle owner's manual for important feature limitations and information.

  • Read your vehicle owner's manual for important feature limitations and information.

  • EPA-estimated MPG highway for Cruze Sedan with 1.4L 4-cylinder engine and transmission.

  • With rear seats folded. Cargo and load capacity limited by weight and distribution.

  • Read the vehicle owner's manual for important feature limitations and information.

  • If you decide to continue service after your trial, your selected subscription plan will automatically renew thereafter. You will be charged at then-current rates. Fees and taxes apply. To cancel you must call SiriusXM at 1-866-635-2349. See SiriusXM Customer Agreement for complete terms at siriusxm.com. All fees and programming subject to change. ©2018 Sirius XM Radio Inc. All rights reserved.

  • EPA-estimated MPG highway for Cruze Sedan with 1.4L 4-cylinder engine.

  • EPA-estimated 37 MPG highway for Cruze Premier Hatchback.

  • Cargo space for Cruze Hatch with rear seats folded. Cargo and load capacity limited by weight and distribution.

  • EPA-estimated 53-mile range based on 106 MPGe combined city/highway (electric); 367-mile extended range based on 42 MPG combined city/highway (gas). Your actual range may vary based on several factors, including temperature, terrain and driving technique.

  • EPA-estimated 53-mile range based on 106 MPGe combined city/highway (electric); 367-mile extended range based on 42 MPG combined city/highway (gas). Your actual range will vary based on several factors including temperature, terrain and driving conditions.

  • Read the vehicle owner's manual for important feature limitations and information.

  • Requires available Performance Exhaust or Z51 Performance Package.

  • Requires available Performance Exhaust or Z51 Performance Package.

  • Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • EPA-estimated 28 City/39 Hwy MPG

  • With second row seats folded flat. Cargo and load capacity limited by weight and distribution.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

  • Read the vehicles Owner’s Manual for more important feature limitations and information.

  • Does not detect people or items. Always check rear seat before exiting.

  • Vehicle user interface is a product of Google and its terms and privacy statements apply. Requires the Android Auto app on Google Play and an Android compatible smartphone running Android 5.0 Lollipop or higher. Data plan rates apply. Android, Android Auto, Google, Google Play and other marks are trademarks of Google LLC.

  • Service varies with conditions and location. Requires active OnStar service and paid AT&T data plan. Visit onstar.com for details and limitations.

  • Premier shown seats seven. Standard on L, LS. Available on LT.

  • EPA-estimated 18 MPG city/ 27 MPG highway 3.6FWD.

  • With second and third row seats folded flat. Cargo and load capacity limited by weight and distribution.

  • EPA-estimated 18 MPG city/ 27 MPG highway 3.6FWD.

  • Read the vehicle owner's manual for important feature limitations and information.

  • The system wirelessly charges one PMA- or Qi-compatible mobile device. Some devices require an adaptor or back cover. To check for phone or other device compatibility, visit my.chevrolet.com/learn for details.

  • EPA-estimated 25 MPG city/31 highway (FWD models).

  • With rear seats folded. Cargo and load capacity limited by weight and distribution.

  • With second and third row seats folded flat. Cargo and load capacity limited by weight and distribution.

  • With 5.3L EcoTec 3 engine. EPA-estimated MPG city/highway: Suburban 2WD 15/22, 4WD14/21.

  • Based on GM Large SUV segment. With 5.3L EcoTec 3 engine. EPA-estimated MPG city/highway: Tahoe 2WD 15/22, 4WD 15/21.

  • With second and third row seats folded flat. Cargo and load capacity limited by weight and distribution.

  • Read the vehicles Owner's Manual for more important feature limitations and information.

  • Colorado 2WD with available Duramax 2.8L Turbo-Diesel 4-cylinder engine. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner's Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • 308 horsepower with available 3.6L V6 engine.

  • Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner's Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.

  • 308 horsepower with standard 3.6L V6 engine.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.

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