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dBOffline
Post subject: RPM to SPEED ratios  PostPosted: Oct 31, 2009 - 01:18 AM
KitCentral Fellow


Joined: May 29, 2004
Posts: 1273
Location: Milton, WI.
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Hi:

Question for 350 SBC to Audi 5000 projects.
For those who are driving this combination, what RPM are you doing at 60 mph?
This would be for 5th gear.


dB...............
 
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wire2Offline
Post subject: RE: RPM to SPEED ratios  PostPosted: Apr 18, 2010 - 02:53 AM
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Joined: Feb 15, 2005
Posts: 307
Location: Milton, ON, Canada
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I worked it out, then noticed how old this question is. D'oh!

Anyways, 60 miles is 3,801,600", a 28" Dia tire rolls 88" per rev = 43200 turns, ÷ 60 for minutes, ÷ 4.11 diff ratio, x .73 for 5th gear is 2160 rpm.
 
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dBOffline
Post subject:   PostPosted: Apr 18, 2010 - 02:57 AM
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Joined: May 29, 2004
Posts: 1273
Location: Milton, WI.
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Hi:

Thanks, I am still trying to confirm this in a road test, hopefully tomorrow.

dB.................
 
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AdrianBurtonOffline
Post subject:   PostPosted: Apr 18, 2010 - 03:50 PM
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Joined: Jul 22, 2003
Posts: 1741
Location: Mooresville, NC
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Here is a calculator

http://www.lambolounge.com/Chassis/Transmission/ratio/index.asp

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wire2Offline
Post subject:   PostPosted: Apr 18, 2010 - 05:27 PM
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Joined: Feb 15, 2005
Posts: 307
Location: Milton, ON, Canada
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dB wrote:
Hi:

Thanks, I am still trying to confirm this in a road test, hopefully tomorrow.

dB.................


Glad to help a fellow Miltonian. [:0)
 
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