3.55 vs 3.73....

Tony Montana

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well i got an S trim coming for my car, and mostly likely an aftermarket intake, followed by heads and cam in the future.

I am contemplating on what gear ratio to go with?

My car is a daily driver, I am leaning more towards 3.55s, any opinions?
 

95CALI-5.0

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The two most common for a blown application will be either 3:55 ot 3:73. I have 3:55 and have traction problems. 3:73 will be even worse.

Good luck
 

The Green GT

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Im sure you aret worried about gas but Ive heard that the 3:73's only turn about 125 more RPM than the 3:55's at HWY cruising speeds.
 

SvtBlack95

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i have 3.73's on my blown cobra and i love it fast acceleration but traction can be an issue but im telling you my falkens hook and their street tires i spin all first and grab on second gear........ 3.55 are great gears tho for a blown stang also either one you will be fine with
 

Tony Montana

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Im more worried about traction then anything with these gears, because ill be daily driving on street tires.

95 cali you have traction problems with 3.55s?

how is ur first gear?
 

95 Sleeper

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I am running 3.73 gears. The only time I have traction problems if I am getting on it(then again I have that problem in 3rd gear). I also run drag radials. Just regular driving you will not have a problem.
 

95CALI-5.0

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Tony Montana said:
Im more worried about traction then anything with these gears, because ill be daily driving on street tires.

95 cali you have traction problems with 3.55s?

how is ur first gear?

I run BFG KD's for rubber. If I roll out of first and get on it my 1st and 2nd gear just spin.
 

Tony Montana

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95CALI-5.0 said:
Tony Montana said:
Im more worried about traction then anything with these gears, because ill be daily driving on street tires.

95 cali you have traction problems with 3.55s?

how is ur first gear?

I run BFG KD's for rubber. If I roll out of first and get on it my 1st and 2nd gear just spin.

Nice I think im gonna go with 3.55s then, your engine mods in your sig are almost identical, minus the gt40 intake.
 

95KBGT

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3.73's altho i dont have traction till 3K in 3rd from a dead stop :noes:
 

Stangbangin

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I kinda just put the biggest gear I felt like in my stang. Then again I didn't know nitrous would be thrown into the equation so quick. I have the microswitch that gives me nitrous when in WOT. if I could do it again I'd go with 3.73's for sure. but if you plan to run slicks at the strip with a drag suspension then whatever tickles your fancy
 

SvtBlack95

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cali-5.0 did you ever dyno you stang???? if you did what did you make for power?
 

95CALI-5.0

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SvtBlack95 said:
cali-5.0 did you ever dyno you stang???? if you did what did you make for power?

Yeah,

It puts down
345 RWHP
364 Torque

What's holding my motor back are the factory heads :-X. I will be going with AFR 185's next fall. :thumb:
 

Tony Montana

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95CALI-5.0 said:
SvtBlack95 said:
cali-5.0 did you ever dyno you stang???? if you did what did you make for power?

Yeah,

It puts down
345 RWHP
364 Torque

What's holding my motor back are the factory heads :-X. I will be going with AFR 185's next fall. :thumb:

You have the mods and ur sig, including the gt 40 intake right?

Cause im gonna run a similar setup, but with a trickflow track heat intake, i hope to have similar numbers :)

Then heads cam in the future.
 

SvtBlack95

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those are nice numbers... i put down 357/399 i have the gt40 heads but im either goin edelbrock or TFS.... you should break the 400 mark with just that headswap
 

95CALI-5.0

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Yeah, I have the gt 40 intake. With the AFR heads I should be into the 400+RWHP.
 

jpajkos

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With blower applications I would say 3.55. If you go witha a steeper gear you will find yourself running through gears really fast. Next spring when I put on my ATI Procharger I will taking out my 4.10s and run 3.55s. The blower will make up for alot on the bottom end. Guys with Cobra's usually go with a steeper gear 3.73 or 4.10 because there power band is alot different from a GT.
 

95 Sleeper

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jpajkos said:
With blower applications I would say 3.55. If you go witha a steeper gear you will find yourself running through gears really fast. Next spring when I put on my ATI Procharger I will taking out my 4.10s and run 3.55s. The blower will make up for alot on the bottom end. Guys with Cobra's usually go with a steeper gear 3.73 or 4.10 because there power band is alot different from a GT.
****cough****I am running 3.73 gears and over 500 rwhp*****cough****
 

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