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Old 10-26-2004, 10:38 PM   #1
XBAJBUSX
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Default 3.55 gears vs rpms

i'm think about putting 3.55 gears in my mustang and i was woundering in 5 spd where are the rpms at 70 mph it will be helpfull and if anybody know with 3.73 please let me know .thank you
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Old 10-27-2004, 10:35 AM   #2
GhettoPop
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Default Re: 3.55 gears vs rpms

well, first off i would say go w/ the 3.73's in the T5!!!!

as far as rpm's, 3.73 vs. stock 2.73 is basically like losing a gear. 5th will feel and have similiar rpm's to stock 4th, 4th will feel like 3rd, and so on. 1st gear is the most fun
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Old 10-27-2004, 10:50 AM   #3
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Default Re: 3.55 gears vs rpms

A lil over 3000 rpm at 70 mph if I remember back correctly... it's been a few years since I had a five speed with 3.55's... go ahead with the 3.73- not much difference
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Old 10-27-2004, 11:00 AM   #4
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Default Re: 3.55 gears vs rpms

Drove cross country with 3.73 gears in 5th, with the cruise control set and never turned more than 2600-2700rpm at 75mph, and this is with tires that are too short 2255015, with a 60 series tire it would be around 2400-2600. I also got 24mpg too using the cruise control.
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Old 10-27-2004, 12:26 PM   #5
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Default Re: 3.55 gears vs rpms

Oh that reminds me... I also had a world class tranny in it... if that makes up the difference in any way on my reply... then again I'd listen to 90GT398 since he has them now.
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Old 10-27-2004, 05:12 PM   #6
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Default Re: 3.55 gears vs rpms

http://home.neo.rr.com/chambersracing/gear_select.htm
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