Bully Dog Caterpillar® Stage 1 Big Rig Turbo Part# 56700

The Bully Dog 56700 Stage 1 Big Rig Turbo is designed for high-performance heavy-duty applications. It primarily fits Caterpillar engines produced between 1989 and 2003 that fall within the 400 to 625 horsepower range.

Engine Compatibility

The Bully Dog 56700 Stage 1 Big Rig Turbo is compatible with the following specific Caterpillar engine models and displacements:

• 3406B / 3406C: 14.6L ('89–'03)

• 3406E: 14.6L & 15.8L ('89–'03)

• C-15: 14.6L ('99–'03)

• C-16: 15.8L ('99–'03)

• Single Turbo C-15 (Non-ACERT): 14.6L (2004)

Key Fitment & Technical Notes

• A/R Ratio: This model features a 1.32 A/R ratio, which provides a faster spool-up compared to the Stage 2 (1.45 A/R) version.

• Exhaust Ports: It is a direct fit for most standard setups, but engines with square exhaust ports will require modifications to the oil drain, oil feed, and compressor discharge pipe.

• Emissions: This part is generally for uncontrolled (non-emissions controlled) vehicles or closed competition racing. It is not legal for sale or use in California on pollution-controlled vehicles.

• Horsepower Limit: While it is a replacement for engines up to 625HP, it can support rigs up to 650HP with additional supporting modifications.