---
title: What question is your article answering?What Are the Specifications and Common Service Information for the Discontinued BluePrint Engine BPLS4080C?
description: The BluePrint Knowledge Base contains discontinued-engine support content, but no current article specifically covering the BPLS4080c
---

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# What question is your article answering?What Are the Specifications and Common Service Information for the Discontinued BluePrint Engine BPLS4080C?

### ***What Is the BPLS4080C?***

The **BPLS4080C** is a BluePrint-built **408 cubic inch LS stroker long block** based on a GM 6.0L iron LS block. Key features include:

- **408 cubic inches**
- **6.0L GM iron block**
- **4.030" bore**
- **4.000" stroke**
- **Forged crankshaft**
- **Forged I-beam connecting rods**
- **Forged pistons**
- **Hydraulic roller camshaft**
- **LS3-style rectangle-port aluminum cylinder heads**
- **Internal balance rotating assembly**

 What Are the Horsepower and Torque Ratings? Production documentation lists the following minimum dyno targets:

- **585 horsepower**
- **540 lb-ft torque**

 Actual output may vary depending on fuel, tuning, exhaust system, and vehicle installation. What Is the Compression Ratio? The BPLS4080C was built with approximately:

- **10.8:1 compression ratio**

 Premium fuel is recommended for this engine combination. What Cylinder Heads Does It Use? The engine uses BluePrint LS3-style rectangle-port heads. Specifications include:

- **PS8015 cylinder heads**
- **70cc combustion chambers**
- **2.165" intake valves**
- **1.590" exhaust valves**
- **Aluminum construction**
- **Rectangle intake ports**

 What Camshaft Is Used? The BPLS4080C uses the **LSC3 hydraulic roller camshaft**. Specifications:

- **.624" intake lift**
- **.624" exhaust lift**
- **239° intake duration @ .050"**
- **255° exhaust duration @ .050"**
- **114° lobe separation angle**
- **110° intake centerline**

 What Reluctor Ring Does It Use? Production records indicate this engine was built with a:

- **58X reluctor wheel**
- **GM12586768** (preferred)
- **PSC4001** (alternate)

 The engine documentation specifically required verification of the 58X reluctor ring before shipment. Common Specifications Quick Reference

| Specification | Value |
| --- | --- |
| Engine Part Number | BPLS4080C |
| Displacement | 408 CID |
| Block | GM 6.0L Iron LS |
| Bore | 4.030" |
| Stroke | 4.000" |
| Compression Ratio | 10.8:1 |
| Balance | Internal |
| Heads | PS8015 LS3 Rectangle Port |
| Camshaft | LSC3 Hydraulic Roller |
| Reluctor Ring | 58X |
| Horsepower | 585 HP |
| Torque | 540 lb-ft |

 ***Frequently Asked Questions***

### Is the BPLS4080C still available?

### ***No. The BPLS4080C is a discontinued BluePrint engine package.***

### Is the engine internally balanced?

**Yes.** Production documentation specifies an internally balanced rotating assembly.

### Does it use LS3 heads?

**Yes.** It uses BluePrint LS3-style rectangle-port aluminum heads.

### What fuel should be used?

**91-octane or higher premium fuel** is recommended due to the 10.8:1 compression ratio.

### What reluctor wheel does it use?

**58X**, using GM12586768 or PSC4001. 

 

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