CI Tech Archive
We've taken the Classic Inlines Tech Section and modernized it! If you see something that needs to be edited, contact me.
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Small Six Specs - 144/170/200/250ci
SMALL SIX SPECS - 144/170/200/250ci General Specs YEAR CI Chamber Intake Exhaust Log CC Adv HP Adv TQ 60-64 144 44-51 1.467 1.266 850 90 138 61-65 170 48-53 1.522 1.266 890 105 158 65-72 170 48-53 1.649 1.380 890 105 158 65-69 200 51-53 1.649 1.380...- 1966Mustang
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Load-O-Matic Distributor & Spark Control Valve
How The Stock Load-O-Matic Distributor Works Here is a little clarification on how the "Load-O-Matic" distributor works, along with the infamous "Spark Control Valve" (or SCV). Not only is it important to know how they work, especially if your planning a carb swap, but how they work in...
Classic Inlines Tech Articles
We've taken the Classic Inlines Tech Section and made it easier to update and correct. A small number of the original pages have been converted or rewritten.
Valve Adjustment Guide for the Ford Inline Six: Hydraulic and Solid Lifters
Solid or Hydraulic? Know What You Have
Before you touch an adjuster, you need to know which type of lifter your engine uses. The Ford inline six family was produced with both solid and hydraulic lifters over its long...
How to Degree Your Camshaft: A Step-by-Step Guide for the Ford Inline Six
Why Degreeing the Cam Matters
"Degreeing the cam" means verifying that the camshaft's position in the engine is properly synchronized with the crankshaft — so that the rise and fall of the pistons precisely matches the...
Camshaft Installation Tips for the Ford Inline Six
Avoiding the most common mistakes that lead to premature cam failure
A camshaft swap is one of the most impactful performance upgrades you can make to a Ford inline six — but it is also one of the most commonly botched. Premature cam failure...
Jenvey Individual Throttle Body Setup Guide for the Ford Inline Six
A complete guide to linkage, balancing, TPS installation, fuel rail plumbing, and maintenance
Individual throttle bodies (ITBs) represent one of the most rewarding fuel delivery upgrades you can make to a Ford inline six...
Idle Air Bypass Valves for Ford Inline Six Throttle Body Installations
One of the most overlooked details when building a multi-throttle-body EFI system on the Ford inline six is the idle air bypass (IAC) circuit. On a conventional single-throttle-body or plenum-based EFI system, idle air...
Engine Management Systems: A Complete Technical Guide for the Ford Inline Six
The Ford inline six — whether you're running a 170, 200, or 250 — is a fundamentally sound engine that responds well to modern fuel injection and ignition management technology. While carburetion remains popular in...
Throttle Body Idle Air Bypass: Setup and Installation for Ford Inline Six EFI
Originally compiled from the Classic Inlines technical archive. Adapted and expanded for the fordsix.com community.
When converting a Ford inline six to individual throttle body EFI, one of the most important — and...
Engine Management Systems: A Technical Guide for Ford Inline Six Builders
Originally compiled from the Classic Inlines technical archive. Adapted and expanded for the fordsix.com community.
Modern engine management systems (EMS) do a fine job of ensuring that engines run cleanly and...
Throttle Body Injection — Q&A
Classic Inlines Technical Archive — Jenvey Dynamics Reference
Note: This article addresses general throttle body theory and Jenvey-specific products as documented in the Classic Inlines archive. The principles apply broadly to any individual throttle body (ITB)...
Weber Carburetor High Altitude Tuning
Classic Inlines Technical Archive
While there is no exact formula for tuning or re-jetting a Weber carburetor for high altitude operation (4,000 feet or more), the following guidelines should help you maximize the available power. Keep in mind that no...
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
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 This Matters
This article covers one of the most consequential — and most overlooked — decisions when building or modifying a Ford inline six: the hardness compatibility between your distributor drive gear and your camshaft gear.
Get it right and you'll never think about it again. Get it...
Overview
The Performance Distributors DUI (Davis Unified Ignition) is a complete drop-in electronic distributor that replaces the stock Ford breaker-point unit with HEI-style electronics, a high-output integrated coil, and a factory-optimized advance curve. It eliminates points, condensers, and...
Why Upgrade Your Ignition?
The stock Ford inline six used a breaker-point ignition system that was adequate for its era but has real limitations for modern performance use. Points wear, require periodic adjustment, and struggle to maintain a consistent spark at higher RPM. Upgrading to an...
Overview: Why Weber?
The Weber carburetor has been a staple of Ford inline six performance for decades, and for good reason. Designed in Italy and originally built for European performance cars, Weber down-draft carburetors brought sophisticated progressive throttle design and excellent...
Introduction
The Autolite 1100 and 2100 carburetors served Ford's inline six engines faithfully for decades — but if you're chasing better cold-start behavior, consistent fuel delivery at varying altitudes, improved fuel economy, and the elimination of endless carburetor tuning, Holley's Sniper...
Registry Form Here: https://fordsix.com/threads/aluminum-cylinder-head-registry-form.86378/
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