If anyone with a working speedometer can post up some stats on this it would be much appreciated. My ring gear(?) is broke and my speedometer hasn't been working in quite awhile now, just wanted to get a good idea of how fast I'm going according to the rpm's. Also if you can note the size rims/tires you're running would be helpful to, for calculation purposes. TIA

well crusing at highway I do 60-65 @ 3000rpm on 4th gear and the same mph in 5th @ 2500rpm hope this helps. I dont really know the other gears at low rpm cuz I don't spend lots of time in that gear lol

Status- Need to do break-in...



Try not to challenge me, I'd rather tie up than lose. Either way you NEVER WIN.... - Me..

this is an old post but it should really help you.

http://forums.2gnt.com/dcboard.php?az=show_topic&forum=34&topic_id=383&mode=full

look at one at the posts made by Dino.

I wish I had blown it, believe me, I do...

Thanks for the posts guys, they really help.

So according to that calculator, 6000 rpm w/3.94 final drive, .81 5th gear = 137mph, not too bad really, I feel sorry for that Cutlass though lol.