Eljaro,
My spreadsheet tells me that you're actually running 4723 rpm at 80 mph in your current configuration.
My spreadsheet also tells me the "effective" ratios of each gear, by multiplying the gearbox ratio by the differential ratio. Wasn't there a guideline for the preferred "effective" ratio in first gear? Wasn't it 10:1? It probably has much to do with the weight of the car, track/street conditions, etc. I'm just looking for a guideline as a start.
If anyone would like the Excel sheet, shoot me an email at
timshops@hotmail.com.
TT