3.55 gears for turbo mach? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 8 Old 10-15-2012, 08:32 PM Thread Starter
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3.55 gears for turbo mach?

would 3.55's be my best choice for a 5 speed mach with 28" tall tires? I heard that it should be more like a 3.27 gear with the 28"s. is this true?

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post #2 of 8 Old 10-15-2012, 09:13 PM
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Quote:
Originally Posted by ToFastCalypsoCoupe View Post
I heard that it should be more like a 3.27 gear with the 28"s. is this true?
\

Yes


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post #3 of 8 Old 10-16-2012, 09:35 AM
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3.55's will be fine, especially with a mod motor. I think people get a little carried away waving the "3.27 or Die" flag.


My car has 3.27's in it and runs faster on 26" tires and 28" tires.

1987 Saleen clone: 358cid, FoxLake Vic Jr's, Victor 5.0, YSi, etc, etc, etc
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"Just turn the boost up.....it's only air."
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post #4 of 8 Old 10-16-2012, 11:12 PM
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I'm current running a 3.73 with a 26" tall tire and it rips pretty good. I'd bet a 3.27 or 3.55 would probably be best as I can destroy the 315/30/18 Hoosier drag radials from a 3rd gear roll once boost comes on (haven't tried brake boosting yet). 18 psi from a 7175 precision turbo shoving air into a little 4.6L will do that though.

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'04 GT: Forged bottom end, MHS Stg 3 PI heads, Hi-Tech Custom Cams, MHS Vic Jr + elbow, custom turbo kit, Precision 7175, T-56 & 3.27's. 785rwhp/725rwtq @ 20 psi.
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post #5 of 8 Old 10-17-2012, 05:19 PM
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3.55's may be a good choice as long as you can keep your foot planted and the tires hooking. 3.73's would most likely ensure crossing the traps (1/4 mi) closer to my peak HP but, I think 3.27's will be overall better for a mostly street driven turbo car. I'll let you know first hand soon.

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post #6 of 8 Old 10-17-2012, 07:13 PM Thread Starter
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I hope to find out myself next week!
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post #7 of 8 Old 10-17-2012, 11:29 PM
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I run 3.27 gears.

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post #8 of 8 Old 10-18-2012, 10:02 AM
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I have 3.73's and dislike them. I run 4th out to quick and then catch 5th and it's pure dog####. I'm betting if I ditch the 3650 and went t56 the 3.73's would be nicer...
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