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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

4.10 gears (Got Top End?)

  • Thread starter Thread starter BlackenedSVT
  • Start date Start date Mar 14, 2004
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Xanax

New Member
Mar 13, 2004
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Mar 15, 2004
#21
  • Mar 15, 2004
  • #21
coramprat said:
115 or 120? Did you let off? I have a 96 5sp and my top speed is somewhere around 150-155. My speedo is off about 10% with the speedo gear. I can wrap the speedometer down to MPH so I'm at about 150. Fells like I still have some left but I let off. Hell when I get on the Interstate I'm at 115 before I realize it.

As for an auto I think you have a limiter that shuts down your car at 120.
http://forums.stangnet.com/showthread.php?t=437614
Click to expand...
Yes, Coramprat I did let off in the 1/4 mile at Firebird.I had a NOS NOSZLE
100 shot with all the saftey goodies on my 96 Mustang GT before I reinstalled
the kit and sold it but,that was what was making me trap so high.I don't
have a reason to go 150-155 mph on the street/freeway so,I shut it down
after 115-120 mph at the track.
 
S

Screamin' Demon

Member
Feb 24, 2003
204
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16
winchester, va
Mar 15, 2004
#22
  • Mar 15, 2004
  • #22
What about is my max top speed going to be with 225-55-16 tires on my GT? Not wantin to go that fast but Id like to know. This is with 4.10's of course.
 
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Screamin' Demon

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Feb 24, 2003
204
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winchester, va
Mar 15, 2004
#23
  • Mar 15, 2004
  • #23
bump anyone know?
 

COramprat

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
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Sea of Tranquility
Mar 15, 2004
#24
  • Mar 15, 2004
  • #24
Xanax said:
Yes, Coramprat I did let off in the 1/4 mile at Firebird.I had a NOS NOSZLE
100 shot with all the saftey goodies on my 96 Mustang GT before I reinstalled
the kit and sold it but,that was what was making me trap so high.I don't
have a reason to go 150-155 mph on the street/freeway so,I shut it down
after 115-120 mph at the track.
Click to expand...
OK...I understand now...my top speed was at a 1 mile track.
 

COramprat

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
8,474
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Sea of Tranquility
Mar 15, 2004
#25
  • Mar 15, 2004
  • #25
Screamin' Demon said:
What about is my max top speed going to be with 225-55-16 tires on my GT? Not wantin to go that fast but Id like to know. This is with 4.10's of course.
Click to expand...
In the 1/8, 1/4 or open streatch of track?
 
S

Screamin' Demon

Member
Feb 24, 2003
204
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winchester, va
Mar 15, 2004
#26
  • Mar 15, 2004
  • #26
Ahh meant open stretch. Right now she cruises up to 120 pretty nicely with the 3.27's. I can hold it steady and it seems like the car likes that speed rather well.
 
J

just some guy

Founding Member
Sep 23, 2002
723
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FL
Mar 16, 2004
#27
  • Mar 16, 2004
  • #27
you guys have the final drive ratio wrong. in a tr 3650 you have a .62 5th ratio

with the t45 you are correct at .68 and you are very close...here ya go
Your tire's diameter is 25.681 inches
At 4000 RPM in 5th gear, you're moving at 139.488 MPH -thats the t45 5th ratio, the one that i posted up there is for a tr3650.
 

COramprat

...I can take it. I think.
20+ Year Stangneter
Mar 2, 2003
8,474
1,463
223
Sea of Tranquility
Mar 16, 2004
#28
  • Mar 16, 2004
  • #28
Screamin' Demon said:
Ahh meant open stretch. Right now she cruises up to 120 pretty nicely with the 3.27's. I can hold it steady and it seems like the car likes that speed rather well.
Click to expand...
You will run out of HP before gear. Your tires and wheels will not be too much of a factor in top speed so my guess is around 150. Theoretically (sp?) the top speed with 4.10's will be 185. So unless you add another 100 HP I don't see where you would run out of gear. I don't know if I want to go that fast anyway because at 140 I have a butt pucker factor of 10 to the 10th power.
 
J

just some guy

Founding Member
Sep 23, 2002
723
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FL
Mar 16, 2004
#29
  • Mar 16, 2004
  • #29
i will not go above 120mph 99% off the time. anything above 120 is just too fast. if you want to go faster, get better brakes.
 
X

Xanax

New Member
Mar 13, 2004
103
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Mar 16, 2004
#30
  • Mar 16, 2004
  • #30
coramprat said:
OK...I understand now...my top speed was at a 1 mile track.
Click to expand...
That's good to know
 

StngStr

Member
Jun 24, 2003
616
0
17
Central Florida
Mar 16, 2004
#31
  • Mar 16, 2004
  • #31
just some guy said:
you guys have the final drive ratio wrong. in a tr 3650 you have a .62 5th ratio

with the t45 you are correct at .68 and you are very close...here ya go
Your tire's diameter is 25.681 inches
At 4000 RPM in 5th gear, you're moving at 139.488 MPH -thats the t45 5th ratio, the one that i posted up there is for a tr3650.
Click to expand...

Ok..got it. On the tremec website it lists both .68 AND .62 for the TR-3650. I didn't know which to use.
 

mogs01gt

Founding Member
Jul 22, 2002
3,113
30
119
Ohio
Mar 16, 2004
#32
  • Mar 16, 2004
  • #32
Over drive gear is .68 for 01. I have been using my axlecalc for a long time and its
dead on. Maybe they are using the newer trannies in the new stangs.
 

StngStr

Member
Jun 24, 2003
616
0
17
Central Florida
Mar 16, 2004
#33
  • Mar 16, 2004
  • #33
mogs01gt said:
Over drive gear is .68 for 01. I have been using my axlecalc for a long time and its
dead on. Maybe they are using the newer trannies in the new stangs.
Click to expand...

Ford switched to the TR-3650 in mid 01 didn't they? I thought pre-mid 01 was the T5?
 

BlackenedSVT

Active Member
Jan 18, 2004
1,841
7
38
New Jersey
Mar 16, 2004
#34
  • Mar 16, 2004
  • #34
Pre-mid 01 was still the T45 i believe. The T-5 was used in older stangs...95 and under. Then the T45 was used from 1996-2001
 

mogs01gt

Founding Member
Jul 22, 2002
3,113
30
119
Ohio
Mar 16, 2004
#35
  • Mar 16, 2004
  • #35
They switched to the Tr3650 in February and they were using the t45 before that. The t5 is wha they used on the 5.0s I think. When I said "newer" trannies, I meant the new version of the TR3650. If I remember right, I heard that the new ones have a different over drive gear but that could have been hearsay.

Nick
 

CManT1914

New Member
Feb 5, 2004
3,172
2
0
Killeen, Texas
Mar 16, 2004
#36
  • Mar 16, 2004
  • #36
My friend has a 2000 GT with some mods and 4.10's, and he was doing about 130 the other night. I don't know much else about 4.10's though, I drove his car and didn't like them. 1st gear is way to short for me. Just my opinion though, don't hate me.
 
C

CatmanJJ

Captain Tangnet
20+ Year Stangneter
Feb 5, 2002
4,379
1
68
Maryland
Mar 16, 2004
#37
  • Mar 16, 2004
  • #37
I liked the 4.10s in my GT, I felt I had awesome pull in every gear and 5th was useable on the highway.
 
B

billyfe390

New Member
Aug 18, 2003
573
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0
Mar 16, 2004
#38
  • Mar 16, 2004
  • #38
How accurate is the speed on a dyno jet because at 6000 in fourth with my 97 i was at 162. Just for kicks we did a redline run in fifth to 6k and at 6k my speed was about 161.
 

BlackenedSVT

Active Member
Jan 18, 2004
1,841
7
38
New Jersey
Mar 26, 2004
#39
  • Mar 26, 2004
  • #39
I just got the speedo gears in from STEEDA. They said on the homepage that they were supposed to be WHITE for a 98GT Automatic with 4.10's...well this is a "23 Tooth" BLACK speedo gear...hope this is the right one.
 
B

billyfe390

New Member
Aug 18, 2003
573
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0
Mar 26, 2004
#40
  • Mar 26, 2004
  • #40
UDTBadkarma said:
I just got the speedo gears in from STEEDA. They said on the homepage that they were supposed to be WHITE for a 98GT Automatic with 4.10's...well this is a "23 Tooth" BLACK speedo gear...hope this is the right one.
Click to expand...

Dont bother just put your stock one back in and get a speed cal. I had the 23 tooth gear for 3 weeks and not only was the speedo off it stripped out.
 
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