Header chart is done...what's next ?
- Thread starter 66moneypit
- Start date
Not a bad idea. I think if you combine that with the air filter information...that might prove valuable. Not sure how wide of a variation there are in intakes since I haven't fooled with many. Maybe combining intake, carb, and filter ? See what combo's fit well and which required hood changes. I don't want to go crazy with the databases because not everything lends itself to one.
TOM B
20+ Year Stangneter 
How about boost for superchargers for different size pulleys and engine cubes . also include things like paxton sn series 1200 and the novi 2000 and so forth,, Its a challenge!!
iskwezm
10 Year Member
just go to www.stanginfo.com and click on the header link. By the way...based on your name do you work at Langley ? I worked there while I was in graduate school at ODU.
All of the Ford 5-speed manuals and 4-speed autos use almost exactly the same OD ratio as well as the 1:1 in the gear right before OD. With that in mind I made a small chart to calculate approximate RPM ranges for cruising at 60mph here...iskwezm said:
http://www.edbert.net/rpm_chart.htm
I know you wanted to see various MPH figures, and my chart does not take tire flex/growth into account, but it is a good start if you wanna use it. It was made by me to select a R&P for use behind my AOD, but if you wanna see the numbers for a T5 just take what I marked as 4th gear and call it 5th and take 3rd and call it fourth. The two trannies (T5 and AOD) use a 0.67 and 0.66 OD ratio, which means they are the same for an RPM chart
Here's the math if you just want to do your own from scratch:
MPH = (rpm * tire diameter) / (rear gear ratio * trans gear ratio * 336)
RPM = (rear gear ratio * (mph * 88)) / ((tire Circumference/12)) * trans gear ratio
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