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Working out speed from revs

398 views 2 replies 3 participants last post by  Mark T 
#1 ·
I have a valver conversion in my corsa running an f16 box and 15 inch alloys, my speedo is hideously out you can tell. How could i work out the speeds i am doing at

3K
4K
5K
6K respectively

is there some kind of formula?

was told on corsasport u multiply the revs by 2 then take the 00 off

so at 4K its 4000 x 2 = 8000 less the 00 = 80mph seems too simple to me :dog:

cheers guys
 
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