inline six

Before You Touch the Carb The secret to understanding the critical nature of Weber carb setup is the idle circuit — referred to as the low-speed circuit by Weber. This circuit is responsible for 80% of the driving operation. A properly set up Weber should give an improvement in fuel economy...

Overview Triple Weber DCOE sidedraft carburetors offer an unparalleled induction experience, with throttle response and mid-range torque that is second to none. The first thing most people notice when they go to multiple Webers — beyond performance and appearance — is the ability to finely...

Overview We get numerous questions each week asking how to build up a Ford inline six, so this tech article covers our recommendations from the ground up. This information is intended as a basic guideline for building a daily driver, a weekend cruiser, or an all-out performance engine. There...

What Is a Stroker and Why Do It? A stroker engine is built by increasing the crankshaft stroke — the distance the piston travels in the cylinder — beyond the stock dimension. More stroke means more displacement. More displacement means more torque, and more torque is what makes an engine feel...

Overview This article provides detailed camshaft specifications for the Ford inline six (170/200/250ci) engine family, with a focus on the Clay Smith cam lineup previously available through Classic Inlines. These specifications include part numbers, lift values at multiple rocker arm ratios...

Choosing the Right Camshaft for Your Ford Inline Six The camshaft is the single most important decision in building a performance Ford inline six engine. Choose wrong and no other modification will save you. An improper cam produces an engine that either stumbles, stalls, and annoys you in...

Why Upgrade Your Transmission? The Ford inline six is a torquey, willing engine — but the transmissions it was paired with from the factory ranged from adequate to genuinely limiting. A 3-speed manual or a 2-speed Fordomatic doesn't let a built inline six breathe on the highway or show its...

Introduction These are the most frequently asked questions about Ford inline six engines — the 144, 170, 200, and 250 cubic inch family. Whether you're brand new to the inline six world or returning after a long absence, this FAQ covers the foundational decisions and modifications that define a...

Introduction This trouble shooting guide covers the most common problems encountered with Ford inline six engines (144, 170, 200, 250, and 300 cubic inch). Whether you're dealing with a no-start condition, rough idle, miss under acceleration, or oiling issues, work through the relevant section...