Icengineworks 1-3/4 inch Pro Header Modeling Set, 308 piece

Design custom headers faster—no cutting, no guessing, no wasted material.
Icengineworks modeling blocks make it easy to design and layout exhaust headers and turbo manifolds before you ever cut metal. Simply snap the blocks together to build your header primaries, then duplicate the design using prebent U-bends and J-bends.

This system eliminates trial-and-error fabrication, helping you save time, reduce waste, and get a more accurate fit-up on your final weld assembly.

Why Fabricators Use Modeling Blocks

• Faster Layout: Design header routing quickly and visually.
• Reduce Waste: Minimize scrap from incorrect cuts and rework.
• Easy to Use: Blocks snap together to build complex shapes.
• Accurate Transfer: Markings and index points simplify duplication in metal.
• Flexible Design: Combine block sizes to simulate stepped headers.

How It Works

1. Build Your Design:
Snap together straight and curved blocks to model header primaries and routing.

2. Plan Your Cuts:
Use the 1" arc-length blocks to visualize each section of tubing.

3. Duplicate in Steel:
Transfer your design to prebent U-bends and J-bends for cutting and welding.

What’s Included

• (60) Straight Blocks, 1750-00
• (60) 2" Radius Blocks, 1750-20
• (60) 3" Radius Blocks, 1750-30
• (60) 4" Radius Blocks, 1750-40
• (60) 6" Radius Blocks, 1750-60
• (8) Block Adapters, 1750BA
• Manual
• Control Sheet Pad
• Plastic Storage Case

Key Features

• Design and layout headers quickly and easily
• Blocks snap together for fast mock-up
• Each block represents a 1" arc length of tubing
• Includes multiple radii for flexible routing
• Enough pieces for most V8 header applications

Ideal For

• Custom exhaust header fabrication
• Turbo manifold design
• Prototype layout and mock-up work
• Reducing fabrication time and errors

Frequently Asked Questions

What are these blocks used for?
They are used to model and design exhaust headers and manifolds before cutting metal.

Do the blocks represent real tube length?
Yes. Each block represents a 1" arc length, making it easier to translate the design into real tubing.

Can I simulate stepped headers?
Yes. Different block sizes can be connected to create stepped header designs.

Is this enough for a full header build?
Yes. The kit includes enough pieces for most V8 header applications.

Why use modeling blocks instead of fabricating directly?
They help eliminate guesswork, reduce wasted material, and improve final fit-up accuracy.