3:73's or 4:10's

Silver5.0 · 07-06-2002, 03:33 PM

Hi I have a 91 GT 5.0 and it's a aod w/ TCI street fighter tranny I have a brazed converter, 190lph fuel pump, fuel pressure reg, pulleys, american thunder cat-back, mac headers, then a bunch of suspension parts anyways should I go with 3:73's or 4:10's I'm a senior in high school and hit up the track whenever I get the chance but not every weekend. What would my rpm's be at with 4:10's going 60 or 70mph. What kind of et time would I see with 4:10's then 3:73's. Thank you

Ieatcamaros · 07-06-2002, 03:56 PM

we would need to know your tire size before we could tell you rpms. There is a link on the left that says analyzer. That should tell you what you want to know.

Mr 5 0 · 07-06-2002, 06:58 PM

Generally, a 5.0 Mustang with the AOD benefits the most from 4.10's.

5-speeds usually do best with 3.73's.

You'll see around 2400 - 2500 RPM @ 70 mph in high gear (ballpark number).

07-06-2002, 03:33 PM	#1
Silver5.0 Registered Member Join Date: Aug 2001 Location: Mukilteo,Wa,U.S. Posts: 53	3:73's or 4:10's Hi I have a 91 GT 5.0 and it's a aod w/ TCI street fighter tranny I have a brazed converter, 190lph fuel pump, fuel pressure reg, pulleys, american thunder cat-back, mac headers, then a bunch of suspension parts anyways should I go with 3:73's or 4:10's I'm a senior in high school and hit up the track whenever I get the chance but not every weekend. What would my rpm's be at with 4:10's going 60 or 70mph. What kind of et time would I see with 4:10's then 3:73's. Thank you

07-06-2002, 03:56 PM	#2
Ieatcamaros Domestic Rice really sucks! Join Date: Apr 2002 Location: KY Posts: 973	we would need to know your tire size before we could tell you rpms. There is a link on the left that says analyzer. That should tell you what you want to know. __________________ The sig says it all.

07-06-2002, 06:58 PM	#3
Mr 5 0 Conservative Individualist Join Date: May 1997 Location: Wherever I need to be Posts: 7,487	Gear ratio & RPM's Generally, a 5.0 Mustang with the AOD benefits the most from 4.10's. 5-speeds usually do best with 3.73's. You'll see around 2400 - 2500 RPM @ 70 mph in high gear (ballpark number).

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