Q. Differnet types of superchargers (roots, etc)
A. There are 3 main styles of superchargers. Centrifugal, Roots, and Twin Screw. The basic info on the three goes about like this. Centrifugal is the most popular and common form of supercharger on the market. It takes less power to operate than either the Roots style or Twin screw style blowers. Roots blowers are called postive displacement since they literally scoop and force air into the induction system. Roots blowers take a lot of power to run, and they are generally inefficient at producing power. That being said, they can make phenominal amounts of power, and they are much better at producing boost levels at lower rpms than centrifugal types. The third, and least common is the Twin Screw (also positive displacement). The twin screw systems actually replace the upper intake on the 5.0, they are the best of the three at producing low rpm boost. They have no lag time (or time between you pressing down the pedal to the time boost is made), unlike the roots, and much unlike the centrifugal. The twin screw superchargers are not found in ample supply at the drag strips.
Q. A-Trim, S-Trim?
A.These are two different models of the Vortech supercharger family. The S-Trim is superior in output to the A-Trim, it's built better and it is capable of holding up under higher boost levels. There are more versions availible as well, you may see T-Trim, R-Trim or a few others.
Q. CFM?
A.Abbreviation for "Cubic Feet per Minute." It's generally used to compare flow rates between products. More air = more power, as long as the setup is matched right.
Q. MAF?
A.Abbreviation for "Mass Airflow" or "Mass Airflow Sensor." It's a sensor on 1988 (California), or 1989 and later Mustang V-8's. It allows for real measurement of air coming into the engine, whereas the older SD "Speed Density" system uses stored baseline information.
Q. Do the same mods on a 90-93 5.0 work on the 94-95 5.0 (just for the engine, not the car)OEM and OE.
A. For all intensive purposes, the 1987-1995 Mustang 5.0's all have the same engine, except for the Cobra models. Athough a few modifications for the are Fox 1987-1993, or SN95 1994-1995 specific (such as intakes), the same basic modifications will net you about the same performance improvements. The heads are the same E7TE truck castings 1.78" intake valves, 1.46" exhaust from 1987-1995, the camshaft was slightly revised in 1989, but it's nearly the same as the SD cars. The intake changed in 1994, but it kept about the same performance rate. The MAF sensor is the same from 1988 (California) thru 1995 as well. The block is the same for sure from 1985-1995.