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I need a link to the gear calculator

  • Thread starter Thread starter steel1212
  • Start date Start date Apr 19, 2005
S

steel1212

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Jun 24, 2004
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Apr 19, 2005
#1
  • Apr 19, 2005
  • #1
somebody had posted a link to a site that calculated rpms, transmission gears, and rear gears.
 

jerry S

New Member
Sep 3, 2003
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52.22N 5.12E
Apr 19, 2005
#2
  • Apr 19, 2005
  • #2
steel1212 said:
somebody had posted a link to a site that calculated rpms, transmission gears, and rear gears.
Click to expand...


does this help?

http://www.ringpinion.com/content/calculators/RPM.asp
 

Max Power

Active Member
Jul 31, 2003
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St Paul
Apr 19, 2005
#3
  • Apr 19, 2005
  • #3
http://www.drivetrainsuperstores.com/calculate.asp
 
S

steel1212

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Apr 19, 2005
#4
  • Apr 19, 2005
  • #4
Thats what I was looking for but really didn't help me much. I have the 3 something first gear t-5 for right now but will be upgrading to a g force tranny with the 2.89ish first gear soon. Anyway I'm looking to get my chunck rebuild and was wondering what gear to get. I was thinking 3.50-3.90 but my friend tells me that will be too much with the 3 something first gear in the t-5. I figure I'll just be cruising in 5th anyway and was wondering what my rpms would be at 70ish in 5th with 3.50-3.90
 

84convertablegt

New Member
Nov 6, 2004
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Columbus, OH
Apr 19, 2005
#5
  • Apr 19, 2005
  • #5
youll be fine with a t5... an auto c4 might be a problem with a 3.90, but not a t5. alot of t5 folks use at least 3.55 to 4.10. u will be quick through the gears and you can cruise in 5th
 
S

steel1212

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Apr 19, 2005
#6
  • Apr 19, 2005
  • #6
What rpm do you think I would be cruising at in 5th with 3.90sat around 70ish?
 

84convertablegt

New Member
Nov 6, 2004
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Columbus, OH
Apr 19, 2005
#7
  • Apr 19, 2005
  • #7
steel1212 said:
What rpm do you think I would be cruising at in 5th with 3.90sat around 70ish?
Click to expand...
around 2800 with a standard mustang tire at 70mph
 

12sec67

Active Member
Oct 6, 2003
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San Diego, Ca
Apr 19, 2005
#8
  • Apr 19, 2005
  • #8
I Cruise 70 At 2700rpms With An Aod And 26" Tall Tire AND 4.11'S
 

jerry S

New Member
Sep 3, 2003
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Apr 20, 2005
#9
  • Apr 20, 2005
  • #9
12sec67 said:
I Cruise 70 At 2700rpms With An Aod And 26" Tall Tire AND 4.11'S
Click to expand...

do you know your top end?
 

Edbert

Founding Member
Jul 13, 2002
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Austin TX
Apr 20, 2005
#10
  • Apr 20, 2005
  • #10
I did this spreadsheet for a comparison of various rear-gears and tire sizes using a 1:1 ratio (3rd gear on the chart) and the stock OD ratio of a AOD (which I do not recall offhand).

http://www.edbert.net/rpm_chart.htm

I thought is was useful when calculating cruise RPMs and quarter mile trap speeds.
 
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