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Should I go 3.55 or 3.73 wit hmy 414c.i.?

  • Thread starter Thread starter Pokageek
  • Start date Start date Feb 14, 2008
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Pokageek

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Jun 10, 2005
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Feb 14, 2008
#1
  • Feb 14, 2008
  • #1
5 speed .64 od and 2.95 1st gear.
 

S351Saleen77

Member
Jun 27, 2002
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Washington
Feb 14, 2008
#2
  • Feb 14, 2008
  • #2
Either one will work great with your taller first gear.

I have a lower 1st with 3.73's and 1st is a joke!
 

Wi Stang

Member
Jun 27, 2004
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Fountain City, WI
Feb 14, 2008
#3
  • Feb 14, 2008
  • #3
Yeah, I don't think you can go wrong with either one. I have 3.55's in my car, and my first gear is 2.66. I don't have any problems.
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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Bethesda, MD
Feb 14, 2008
#4
  • Feb 14, 2008
  • #4
what do you have now and why do you feel the need to change it?
 

Pokageek

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Feb 14, 2008
#5
  • Feb 14, 2008
  • #5
Sure Chris. With the 3.27's the 5th gear is too high. I am revving at like 1750 at 65mph. it's too low and bucks. Stupid on my part.
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
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129
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Feb 14, 2008
#6
  • Feb 14, 2008
  • #6
If its that low in 5th at that speed, keep it in 4th. 3.27 to 3.55 is a waste of time and money. Whats your tire height?
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
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Arkansas
Feb 14, 2008
#7
  • Feb 14, 2008
  • #7
It really depends on what your goals or plans are.

If you are not looking into some suspension work, go with the higher ratio.

If you are looking to do some suspension/traction work, go with a steeper gear.

Are you wanting to match this to your trap speed or just for your own personal preference?

Just do whatever you feel comfortable with it
 

Pokageek

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Feb 14, 2008
#8
  • Feb 14, 2008
  • #8
My suspension is being beefed big time. I am looking for the ideal 1st gear launch and to be able to shift into 5th at 60 and not ..glug...glug...glug... buck , buck , buck... like it does now. You can hear the drive train clunking a little when it does that,..yo uknow.
 

final5-0

Mustang Master
Apr 6, 2003
6,817
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DFW Texas
Feb 14, 2008
#9
  • Feb 14, 2008
  • #9
Pokageek said:
My suspension is being beefed big time. I am looking for the ideal 1st gear launch and to be able to shift into 5th at 60 and not ..glug...glug...glug... buck , buck , buck... like it does now. You can hear the drive train clunking a little when it does that,..yo uknow.
Click to expand...

Keith

As I see it .....The fifth gear thing you speak about ..........
is gonna be dependent upon the tune more so than the gear ratio

I had a bit of that and I found pulling a small amount of spark from low load conditions really helped with that

Grady
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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Bethesda, MD
Feb 15, 2008
#10
  • Feb 15, 2008
  • #10
Pokageek said:
Sure Chris. With the 3.27's the 5th gear is too high. I am revving at like 1750 at 65mph. it's too low and bucks. Stupid on my part.
Click to expand...
that's an easy one. go 70. geez

 

final5-0

Mustang Master
Apr 6, 2003
6,817
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DFW Texas
Feb 15, 2008
#11
  • Feb 15, 2008
  • #11
BlackVert said:
that's an easy one. go 70. geez

Click to expand...

You should be able to cruise down a level road in 5th at 1000 rpm :Word:

Grady
 

S351Saleen77

Member
Jun 27, 2002
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Feb 15, 2008
#12
  • Feb 15, 2008
  • #12
final5-0 said:
You should be able to cruise down a level road in 5th at 1000 rpm :Word:

Grady
Click to expand...


Unless your car normally idle's above 1k!! Big camsahfts don't like to be at that RPM with a load.
 

earleys94gt

Active Member
Aug 31, 2003
1,223
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Ashley, Ohio
Feb 15, 2008
#13
  • Feb 15, 2008
  • #13
Check out this website...

http://www.allfordmustangs.com/Detailed/608.shtml

You can see what RPM's you'll be at with "x" gear ratio.
 

Pokageek

Active Member
Jun 10, 2005
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Feb 15, 2008
#14
  • Feb 15, 2008
  • #14
Thanks for all of of your comments. Thanks early! That is the site I used in my calcs.
 

earleys94gt

Active Member
Aug 31, 2003
1,223
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Ashley, Ohio
Feb 15, 2008
#15
  • Feb 15, 2008
  • #15
Thanks early! That is the site I used in my calcs.
Click to expand...

No problem.
 

DDSTANG94

New Member
Dec 9, 2006
465
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FRASER, MICHIGAN
Feb 15, 2008
#16
  • Feb 15, 2008
  • #16
3.55. i have a stock 302 and with 373 i cant grip at all
 

Pokageek

Active Member
Jun 10, 2005
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Feb 16, 2008
#17
  • Feb 16, 2008
  • #17
Ok. I am going 3.55. I was just out on the road after installing my edelbrock victor intake. I can't get no..... tra..-tra...-tractIOn.. in 1st, 2nd .

Given it is cold out.... and I am riding on BF Goodrich v 245's rated with - not much traction... the 3.55's will be a much better power band but more traction in warm and with my z rated 255's going on..

p.s. DD, you do have 3.35 1st gear too..I have 2.95.
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
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Bethesda, MD
Feb 16, 2008
#18
  • Feb 16, 2008
  • #18
so you like the new intake i take it?

um, with higher gears, your traction "problem" is going to be worse.

i'm sure you already know that though.

that is the kind of problem most of us would love to have, huh?

you should try on my rear wheels and tires ... i bet you'd like them

they are these (toyo r888 18x275):

 

Pokageek

Active Member
Jun 10, 2005
2,767
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46
MA, USA
Feb 16, 2008
#19
  • Feb 16, 2008
  • #19
BlackVert said:
so you like the new intake i take it?

um, with higher gears, your traction "problem" is going to be worse.

i'm sure you already know that though.

that is the kind of problem most of us would love to have, huh?

you should try on my rear wheels and tires ... i bet you'd like them

they are these (toyo r888 18x275):

Click to expand...

Yes but It is freezing cold out lol. And me tires aint so good. Intake goes around 1k rpm higher..but I need to try it more to get a good feel...DEFINITELY opens up for more power. That 414 needs ALOT of air! Are they drag radials?

... found em'

"Stock Level: Click for details
Summer tires
UTQG: 100AAA
Speedindex W: the tire's speed capacity is up to 168 mph/270 km/h !
"

Facinating.. basically drag tires with a speed rating and a wear rating that is 1/2 decent...BUT $200 per tire!! lol. Also, how's the side wall?
 

BlackVert

15 Year Member
Oct 3, 2003
5,589
9
98
Bethesda, MD
Feb 16, 2008
#20
  • Feb 16, 2008
  • #20
Pokageek said:
Yes but It is freezing cold out lol. And me tires aint so good. Intake goes around 1k rpm higher..but I need to try it more to get a good feel...DEFINITELY opens up for more power. That 414 needs ALOT of air! Are they drag radials?

... found em'

"Stock Level: Click for details
Summer tires
UTQG: 100AAA
Speedindex W: the tire's speed capacity is up to 168 mph/270 km/h !
"

Facinating.. basically drag tires with a speed rating and a wear rating that is 1/2 decent...BUT $200 per tire!! lol. Also, how's the side wall?
Click to expand...
geez, i wish mine were $200 per tire ... they more more like $300 per tire. were you looking at 17s? mine are 18s
 
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