BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC
BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC
BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC
BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC
BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC
BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC

BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC

SKU: BPP12110329

BluePrint Engines Bare Block - 632 c.i. - BBC, 2PC, SIAM, 10.200 x 4.500, CAST MC

SKU: BPP12110329
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Overview:

When you’re building big power, you need a block that’s ready to carry the load—and this BBC-compatible foundation is engineered to take you all the way to a massive 632 cubic inches. Designed for serious street, strip, and marine performance, this block delivers the strength, rigidity, and machining precision needed for high-horsepower combinations. Thick cylinder walls, robust main webbing, and smartly engineered oiling and cooling pathways give builders the confidence to push displacement and power further without sacrificing reliability. Whether you’re crafting a torque-heavy cruiser or a high-rpm bruiser, this block is the rock-solid starting point your big-inch Chevy build deserves.

Cylinder Bore (Rough):

  • 4.489" to 4.491"

Cylinder Bore (Max):

  • 4.630"

Cam Bearings:

  • Durabond GM-12

Cam Bearing Bore ID:

  • 2.120"+/- .001"

Camshaft Position:

  • OEM

Cam Drive / Timing Set:

  • OEM / Double Roller

Cam Retaining Plate:

  • OEM

Cubic Inch (Max):

  • 632

Cylinder Wall Thickness:

  • .310" Nominal @ Max Bore

Cylinder Skirt Length:

  • 6.700" Nominal

Deck Height:

  • 10.200" +.005" / -.000"

Deck Thickness:

  • .710" Nominal

Freeze / Core Plugs:

  • 1-5/8" x 8

Head Bolt / Stud Threads:

  • 7/16-14 UNC

Lifter Bores:

  • .8437" +/- .0003"

Lifter Retainer (If not using tie car lifters):

  • OEM W/Roller Provisions

Main Bearing Bore (Line Honed):

  • 2.937" - 2.938"

Main Bearing Caps:

  • Cast Iron

Main Cap Bolts:

  • 1/2"-13 UNC

Main Fastener Tensile Strength:

  • 180,000 to 210,000 PSI

P1 Main Stud Kit P/N:

  • TBD

ARP Main Stud Kit P/N:

  • TBD

Material (Block):

  • EN-GJL-250 Iron

Oil System:

  • Priority Main

Oil Pump:

  • OEM

Oil Filter:

  • OEM

Oil Pan:

  • OEM (GEN IV)

Rear Main Seal:

  • 2 piece - Seal (OEM GEN IV)

Starter:

  • OEM

Stroke (Max):

  • 4.750"

Timing Cover:

  • OEM GEN IV

Approx. Weight with Main Caps:

  • 250-270lbs

Yellow Exclamation Triangle WARNING: Cancer and Reproductive Harm-
www.P65Warnings.ca.gov

BETTER THAN THE REST.

At BluePrint Engines, customer satisfaction is our highest priority. Every engine is built using high-quality components, with each rotating assembly balanced to within two grams of specification. Before shipment, every crate engine is dyno tested and certified to ensure it is ready to deliver the horsepower and torque you expect.

To stand behind that level of quality, BluePrint Engines offers industry-leading warranty coverage, providing confidence and peace of mind whether the engine is installed by an individual or a professional installer. Our standard warranty is fully transferable, adding long-term value and reassurance for our customers.

Warranty Coverage Details:

  • BluePrint Engines (including Builder Series)- Standard Warranty 30 months or 50,000 miles (parts and labor)*
  • BluePrint Engines Extended Warranty- 48 months or unlimited miles (parts and labor)*
  • Race / Motorsports Engines -No warranty
  • Marine Engines- 12 months (parts and labor)
  • Short Blocks-12 months (parts only)
  • Bare Blocks- 6-Month Unaltered
  • International Sales- Warranty coverage is handled by the in-country distributor

*Applies to eligible engine part numbers beginning with “B” or “P.” Warranty coverage is subject to terms and conditions. Proper installation and maintenance are required.

Please refer to full warranty documentation for complete details click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

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