CI Tech Archive

Below are many of the common C4 Transmission Codes for the 1967 and newer Ford Models these will most all have the better Select Shift Valve Bodies. Most of them will have a Column Shift except for those from a Mustang or Cougar - those models will all have a Floor Shifter there are exceptions...

CONVERTING STOCK REAR BRAKES TO 10 X 2 ˝ INCH DRUMS By Sam Griffith {AKA Sigtauenus} After converting the front of my car from drum brakes to disc brakes, I wanted to make an upgrade to the rear brakes as well. After emptying the wallet on the front brakes, I didn't want to spend the money on...

https://fordsix.com/ci/CarbChoice.html Selecting the Right Carburetor Choosing the right carburetor is critical if you want to achieve the maximum power potential of your inline six. As such it's one of the most important decisions you'll make. Selecting the wrong carburetor, to big or to...

NOTE: All Inquires about Classic Inlines should be directed to Vintage Inlines. Classic Inlines is no longer in operation. There is a site with the same name that is not associated/affiliated in any manner with fordsix.com or vintageinlines.com. This page is for historical purposes only. If...

When Ford introduced the Mustang in April of 1964, the base powerplant was the Falcon's 170ci six with 101 horsepower and 156 lb-ft of torque. Later that year, in August, Ford updated the Mustang's engine line-up with the seven main bearing 200ci six as standard equipment. Both the 170 and 200ci...

Carburetor Installation 1) Install the gasket, carb studs, any applicable spacers, the carburetor, and the nuts. Tighten the nuts gently and uniformly and torque to 10-15 lbs. Do not over tighten, as this could warp the carb base, resulting in a vacuum leak. 2) Connect throttle linkage or...

UPDATE 9-7-07 Classic Inlines is developing an aluminum head for the Big Six (240/300ci) Ford inline six engine. At the present time, we are having the pattern maker re-work the patterns as we were not happy with the results. For some strange reason, they made the head similar to a shoe box...

The primary goal in designing and developing a new cylinder head, is the reduction of total ignition advance, while simultaneously increasing the air flow capabilities and chamber efficiency. By utilizing the best engineers and pattern makers, foundries and machinist, as well as the latest...

This page will give you a brief overview of our new aluminum cylinder head for the Ford small inline sixes (144/170/200/250ci). We will touch on our reasons for choosing the OZ250-2V platform (rather than a cross-flow) as well as the advantages, the flow test results, and estimated performance...

This is a placeholder for a future tech article. Sniper 1100 - https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_autolite_1100_one_barrel/parts/550-552 Sniper 2300 - https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_2300_2bbl/...

Classic Inlines offers rebuilt 1100-1V carburetors which are re-calibrated to eliminate the problems commonly found in factory calibrated carburetors, such as hesitation and/or flat spots. We currently have a fairly large inventory of 1V carbs in stock, which are rebuilt and ready to ship...

High-performance mufflers and exhaust systems are as much about looks and sound as they are about horsepower. Most people want mufflers and exhaust systems that look and sound as good as they perform. That's easily accomplished when the parts are new, but how about two or three years down the...

It has been published that headers will not work with A/C, this is an incorrect statement. Was is true... is that headers will work with either Stock or After Market A/C, but it is not just a simple bolt on up-grade. Modifications are required to the compressor and/or alternator brackets to...

One of the most common problems with the small six is blown header gaskets and/or exhaust leaks. However they can be minimized by following proper installation procedures. The use of locking bolts may help, but even then, leaks can and will occur if you don't torque the header flange bolts (or...

Do I really need a port divider? Will I get better performance or an increase in mileage? Will my exhaust system sound better with the port divider? Will a port divider help to prevent blown header gaskets? These are questions that have been asked and discussed many times on the fordsix forum...

Selecting the Proper Valve Springs Valve springs are one of the most critical components of your engine. It is very important to match the camshaft and it's potential RPM range with the correct spring rate. We will attempt to explain it in this article, but first lets go over some valve spring...

The Pertronix Ignitor® converts the older points-type ignition system on classic cars, to a solid-state electronic ignition system that's completely concealed, providing a stock appearance. The kit includes new micro controller that installs in just a few minutes. Generally, it installs just as...