Skip to content
English
Go to www.blueprintengines.com
  • There are no suggestions because the search field is empty.

Are BluePrint Engine Blocks Available With Billet Main Caps?

One of the most common questions racers ask when selecting an engine block is whether billet main cap options are available. Main caps play a critical role in supporting the crankshaft and maintaining main bearing alignment under load. As horsepower, RPM, and cylinder pressure increase, the demands placed on the main cap structure also increase.

 What Are Main Caps?

Main caps secure the crankshaft within the engine block and help maintain proper crankshaft alignment during operation.

The strength and rigidity of the main cap system become increasingly important in:

  • High-horsepower engines
  • High-RPM applications
  • Power-adder combinations
  • Competition engines

What Is The Difference Between Cast And B

illet Main Caps?

Cast Main Caps

Cast main caps are commonly used in many engine applications and provide excellent strength for a wide range of street and racing combinations.

Benefits include:

  • Proven durability
  • Cost effectiveness
  • Excellent performance in many applications

Billet Main Caps

Billet main caps are machined from a solid piece of material and are commonly used in more demanding performance applications.

Benefits may include:

  • Increased rigidity
  • Improved strength
  • Enhanced crankshaft support
  • Improved durability in extreme racing environments

Are BluePrint Blocks Available With Billet Main Caps?

Certain BluePrint Engine Block configurations may be available with billet main caps depending on:

  • Engine family
  • Block part number
  • Intended application

Availability varies by specific block and configuration.

Do I Need Billet Main Caps?

That depends on your combination.

Factors to consider include:

  • Horsepower goal
  • RPM range
  • Power-adder usage
  • Racing class
  • Intended vehicle use

Many street and sportsman racing builds perform exceptionally well with standard main cap configurations, while more aggressive racing combinations may benefit from billet main caps.

Are Billet Main Caps Required For NHRA Competition?

NHRA approval is determined by the specific block part number and approval status, not solely by the type of main cap installed.

Always verify the specifications and approval status of the exact block being considered.

Should I Choose Billet Main Caps For Future Power Upgrades?

If future plans include:

  • Increased horsepower
  • Additional cubic inches
  • Turbochargers
  • Superchargers
  • Nitrous oxide

it may be beneficial to consider a block configuration designed to support those future goals.

Frequently Asked Questions

Are billet main caps stronger than cast main caps?

Billet main caps are commonly selected for demanding racing applications due to their increased rigidity and strength characteristics.

Do all BluePrint blocks come with billet main caps?

No. Main cap configuration varies by engine family, application, and block part number.

Can billet main caps help support higher horsepower levels?

The complete engine combination determines durability, but billet main caps are commonly used in aggressive high-performance applications.

Are billet main caps necessary for every racing engine?

No. The proper choice depends on horsepower goals, RPM range, power-adders, and intended use.