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Can I Run E85 Fuel In My BluePrint Engine?

Using the correct fuel is critical to engine performance, reliability, and long-term durability. This article explains whether E85 can be used in BluePrint Engines crate engines and what customers should verify before switching from gasoline to ethanol-blended fuels. This information applies to Small Block Chevy, Big Block Chevy, LS, Ford, Chrysler, and BluePrint Motorsports engine applications.

 Can I Use E85?

Not without proper fuel system upgrades and tuning. E85 typically requires:

  • Larger injectors
  • Higher fuel flow capacity
  • E85-compatible fuel system components
  • An ECU calibration designed for E85
Running E85 in a gasoline-calibrated system can cause poor performance or engine damage. What Fuel Does BluePrint Recommend? Use the fuel specified for your engine model. BluePrint recommends:
  • Ethanol-free fuel when available
  • No more than 10% ethanol (E10)
  • The minimum recommended octane for your engine

Most performance engines require 91+ octane fuel 

 FAQ

Can I mix E85 and gasoline?
Yes, but fuel composition becomes difficult to predict and may require tuning adjustments. Will E85 make more power?
Not by itself. Additional tuning and fuel system upgrades are typically required. Does E85 require larger injectors?
Yes, in most applications. Can I run E85 with Holley EFI?
Many Holley systems support E85 when properly configured. Keywords: E85, ethanol fuel, flex fuel, LS swap, Holley EFI, fuel requirements Meta Description: Learn whether E85 can be used in your BluePrint engine, required fuel system upgrades, and recommended fuel specifications.