Gears thread..Did yu realize a quarter turn makes a difference?

Pokageek

Active Member

Jun 10, 2005

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MA, USA

Mar 2, 2008

#1

• Mar 2, 2008

• #1

I will be going from 3.27's to 3.55's... The difference in 4th top speed is 10 MPH! Meaning, I would shift into 5th at 140mph with 3.27's and 130mph with 3.55's

In third, I will be shifting at 100mph where the 3.27's won't shift til 108.

I didn't realise it was THAT much..

Second gear shifts at 64mph vs 70mph. What all this tells me is that the 3.55's will pull away from the 3.27's and should feel dramatic. I have enough low end that I don't need anything higher for street.

How high should my car pull? I have a .64 5th gear. @170mph I would be just about 5000rpm.

 

T

turbogt

Member

May 1, 2003

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19

Montana

Mar 3, 2008

#2

• Mar 3, 2008

• #2

I went from 3.08's to 4.10's.. I basically lost 5th gear...

 

1

1cobra4u

New Member

Feb 22, 2008

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missouri

Mar 3, 2008

#3

• Mar 3, 2008

• #3

Iwent from 308s to 410 s and am going to go back to a 355

 

Pokageek

Active Member

Jun 10, 2005

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MA, USA

Mar 3, 2008

#4

• Mar 3, 2008

• #4

4.10's are a lot o fun tho and with good traction they rock. I can't use em tho unless I drove around with slicks all day.

 

TurboSnake95

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Mar 15, 2002

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Spanaway, Washington

Mar 4, 2008

#5

• Mar 4, 2008

• #5

I believe tire size factor's into this also. there is a diffrence between a 26" tall tire and a 27" tall tire.

 

Bosko5.0

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May 18, 2006

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longwood, FL

Mar 4, 2008

#6

• Mar 4, 2008

• #6

I went from 3.27 to 3.55 But I want to go back to 3.27 for a long trip then go back to 3.55's. lol since I have been running them for over a year with whine. lol

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

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99

Arkansas

Mar 4, 2008

#7

• Mar 4, 2008

• #7

Yep, the gear shifting speed increases exponentially

It does make a difference...

 

Venom351R

Founding Member

Apr 27, 2002

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MAINE

Mar 4, 2008

#8

• Mar 4, 2008

• #8

Bosko5.0 said:

I went from 3.27 to 3.55 But I want to go back to 3.27 for a long trip then go back to 3.55's. lol since I have been running them for over a year with whine. lol

Click to expand...

I have some 3.27's if you need a set.

 

1TallMF

New Member

Apr 17, 2006

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Montreal

Mar 4, 2008

#9

• Mar 4, 2008

• #9

The SOP feel is well worth it driving around town. But the 3.73's put my car in the dreaded exhaust drone rpm range on the highway, so I just end-up driving 10mph faster so my head doesn't explode I'm going back down to 3.27's when the new torque-monster goes in..... eventually.

 

Pokageek

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Jun 10, 2005

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Mar 4, 2008

#10

• Mar 4, 2008

• #10

1TallMF said:

The SOP feel is well worth it driving around town. But the 3.73's put my car in the dreaded exhaust drone rpm range on the highway, so I just end-up driving 10mph faster so my head doesn't explode I'm going back down to 3.27's when the new torque-monster goes in..... eventually.

Click to expand...

You may want to re-think that. I don't know what engine your putting putting in but there is hardly any drone with my 414. But yea man I know what you mean about drone, lol.

If I don't get enough traction with the 3.55's I will take that as a sign to beef up my suspension more. It's pretty well beefed already minus the tires ..we will see. Oh, also , I have a .64 5th gear ratio instead of a .68 which helps. I also have a 2.95 1st gear which helps with traction. Thats why 3.55's will prob be perfect.

 

1TallMF

New Member

Apr 17, 2006

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Montreal

Mar 4, 2008

#11

• Mar 4, 2008

• #11

Pokageek said:

You may want to re-think that. I don't know what engine your putting putting in but there is hardly any drone with my 414. But yea man I know what you mean about drone, lol.

Click to expand...

You're right, I just have the wrong exhaust setup (x-pipe + chambered mufflers = ), I plan to address that issue this year. As for the gears, the choice between 3.27's and 3.55's will ultimately depend on the tranny gear ratios. I'd rather the car pull hard through the gears rather than break traction and redline at anything over 1/4-throttle.

 

gcomfx.com

Founding Member

Oct 22, 2002

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Republic, MO

Mar 4, 2008

#12

• Mar 4, 2008

• #12

I just pulled my 3.73s out and put some 3.55s in. I was out of gear in the 1/4 on the 75 shot with my shorter drag radials. I may wish I had them back in on the ET Streets as they are 26+ inches taller, but I don't run them all the time.

 

BlackVert

15 Year Member

Oct 3, 2003

5,589

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98

Bethesda, MD

Mar 4, 2008

#13

• Mar 4, 2008

• #13

i decided to go back to stock gearing because i don't think i need any more help getting off the line.

i'd rather have the gas mileage on the highway and the speedo that is actually accurate.

 

Pokageek

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Jun 10, 2005

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MA, USA

Mar 4, 2008

#14

• Mar 4, 2008

• #14

BlackVert said:

i decided to go back to stock gearing because i don't think i need any more help getting off the line.

i'd rather have the gas mileage on the highway and the speedo that is actually accurate.

Click to expand...

You als ohave a different trans than me. Not sure what your first gear ratio is. I als oadded the victor intake which allows me to wind out more. I don't feel any loss of low end going from typhoon though.