---
title: What Distributor Gear Should I Use With a BluePrint Ready-to-Run Distributor and a Roller Camshaft?
description: Learn which distributor gear to use with a BluePrint Ready-to-Run distributor and hydraulic roller camshaft to prevent wear and ensure compatibility.
---

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# What Distributor Gear Should I Use With a BluePrint Ready-to-Run Distributor and a Roller Camshaft?

### ***What Distributor Gear Comes on a BluePrint Ready-to-Run Distributor?***

#### BluePrint Ready-to-Run distributors are equipped with a **melonized distributor gear** designed for use with **steel hydraulic roller camshafts** commonly found in BluePrint Engines performance applications. **Yes, a melonized gear is the correct gear for most BluePrint roller camshaft engines.** The melonized surface treatment provides improved compatibility and wear resistance when used against a steel roller camshaft gear. What Distributor Gear Should I Use If I Replace My Distributor? If you are replacing a distributor on a BluePrint engine equipped with a hydraulic roller camshaft, the replacement distributor should have:

- A **melonized distributor gear**, or
- A distributor gear specifically approved by the manufacturer for use with a **steel roller camshaft**

Before installation, verify distributor compatibility with the camshaft material being used in the engine.

### ***Why Is Distributor Gear Material Important?***

The distributor gear and camshaft gear must be made from compatible materials. Using the wrong gear can cause:

- Accelerated distributor gear wear
- Metal contamination in the oil
- Timing instability
- Distributor failure
- Camshaft gear damage

Correct gear selection helps ensure long distributor and camshaft life.

- Verify the replacement distributor has a melonized gear installed.
- Verify distributor compatibility with a hydraulic roller camshaft.
- If unsure, contact BluePrint Engines Technical Support with your engine part number before installation.

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