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914World.com _ 914World Garage _ 915 Gearing chart

Posted by: RON S. Jul 19 2004, 10:01 AM

I found this .xls spreadsheet while surfing the web last week.
I'll try to attach it but if it doesn't work,you can go to Instant-G's website and down load a copy for yourself.
In a nut shell,you plug in your gear ratios,tire dia's,& axle ratios,and in each gear 1-thru-5, it'll calculate RPM's,top speeds at each shift.Pretty cool.It'll work with 901 boxes to.

Ron

Attached File(s)
915GEARCHART.xls ( 220.5k ) Number of downloads: 158

Posted by: Britain Smith Jul 19 2004, 10:32 AM

I have a file for both the 901 and 915 tranny with all the gears available that I know off...try these. Let me know if you need some help using it...I added to comments to the areas that need to be filled in by the used.

-Britain

http://www.britainsmith.com/Porsche/901Calc.xls

http://www.britainsmith.com/Porsche/915Calc.xls