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  • 1965 - 1973 Classic Mustangs -General/Talk-
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T5 1st gear Ratios- 3.35 or 2.95 ?

  • Thread starter Thread starter Pbum5
  • Start date Start date Dec 27, 2004
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Pbum5

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Oct 27, 2004
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Minneapolis, MN
Dec 29, 2004
#21
  • Dec 29, 2004
  • #21
thanks for the info.. nice chart gp001
. You are running a 6 speed? that's cool
 
D

D.Hearne

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south louisiana
Dec 29, 2004
#22
  • Dec 29, 2004
  • #22
I answered his question about what a Toploader would handle at the first of the thread. Go back and read it.
 

65fastback2+2

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Dec 30, 2004
#23
  • Dec 30, 2004
  • #23
theres a viper t56 on ebay that is made to accept the ford 4spd toploader bellhousing to hook up to well, use your imagination. It had a 0.50 6th gear you could run 4.11's and still have an awesome 6th gear for cruising. It was $2500 shipped.
 
Q

qplk11

New Member
Feb 8, 2004
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Maryland
Apr 3, 2005
#24
  • Apr 3, 2005
  • #24
65fastback2+2 said:
theres a viper t56 on ebay that is made to accept the ford 4spd toploader bellhousing to hook up to well, use your imagination. It had a 0.50 6th gear you could run 4.11's and still have an awesome 6th gear for cruising. It was $2500 shipped.
Click to expand...
You should check if another drive shaft or any other parts are needed. Instead of buying from ebay, check out ddperformance.com. Seem to have a very good rep. They sell T56's. Very informative website. Also compare shipping costs.
 

eric n

Founding Member
Jul 14, 2001
875
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Bakersfield, CA
Apr 3, 2005
#25
  • Apr 3, 2005
  • #25
I ordered my g-force tranny last week, I was told there is a 2 to 3 week wait. Guys seemed nice and I've heard overall very positive things about their product.

I've been nursing my beat up t5 for over a year now. I'll be sure and post my gforce experience shortly
 
G

Gurdy

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Mar 19, 2019
#26
  • Mar 19, 2019
  • #26
Glen's 1965 5.0 said:
2.95

The 2.95 1st gear will also allow a steeper gear in the rear like 3.73.

Any 4 speed top loader from the early cars will be inherently stronger than a T5. A Top loader weighs about 125 LBS. That is allot of material to work with. A T5 is approx. 75 LBS. and they have smaller (In thickness) gears.

Now a T5 is lighter and easier to install on your back. Has tons of machining refinements and most of all overdrive.
Click to expand...


I have 410 gears and 1st is really tall. I think I have 3.35 first gear. I am looking into changing it to 2.95.
 

Noobz347

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#27
  • Mar 19, 2019
  • #27
Gurdy said:
I have 410 gears and 1st is really tall. I think I have 3.35 first gear. I am looking into changing it to 2.95.
Click to expand...

That will make it even taller
 
G

Gurdy

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#28
  • Mar 19, 2019
  • #28
Noobz347 said:
That will make it even taller
Click to expand...
I don't think so.
 

Noobz347

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#29
  • Mar 19, 2019
  • #29
Gurdy said:
I don't think so.
Click to expand...

@3000 RPM
4:10 axle ratio
26.5 in tall tire
3.35 first gear will put you at 17.65 mph
2.95 first gear will put you at 20.04 mph


The rest:
1.94 2nd - 30.48 mph
1.34 3rd - 44.13 mph
1.00 4th - 59.13 mph
.63 5th - 93.85 mph
 
G

Gurdy

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#30
  • Mar 20, 2019
  • #30
Noobz347 said:
@3000 RPM
4:10 axle ratio
26.5 in tall tire
3.35 first gear will put you at 17.65 mph
2.95 first gear will put you at 20.04 mph


The rest:
1.94 2nd - 30.48 mph
1.34 3rd - 44.13 mph
1.00 4th - 59.13 mph
.63 5th - 93.85 mph
Click to expand...
Your right. I should have said short.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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#31
  • Mar 20, 2019
  • #31
Gurdy said:
Your right. I should have said short.
Click to expand...
That should give you an easy idea of what the gear change should do for you though. If by 'taller' you meant making the gear ratio closer to 2nd, then the gear you suggested would do that.
 
G

Gurdy

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Mar 19, 2019
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#32
  • Mar 20, 2019
  • #32
What I'm looking for is a taller first gear because first gear now is too short. First gear revs up so quickly that I have to shift to 2nd quickly. I think the 2.95 first gear will help.
 

dennis112

15 Year Member
May 15, 2005
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Amish Wonderland of Central PA.
Mar 20, 2019
#33
  • Mar 20, 2019
  • #33
SitDown said:
...nobody has answered his Q on what power the toploader will hold? as i am uncertian on the specific #s as well, im just trying to give him an idea from what ive been told.

There are a mass amt of ppl on these boards who run 3550s and TKOs(woulda been a better example) and there #s will likely give him a better idea... and since ppl run 400-500rwhp under their 3550 with no problems then id hope he'd feel confident that he has room to grow.

i ran a toploader in my 65 until it came out for a tremec so im aware of the differences
Click to expand...

A toploader can be good to about 600hp motor HP. The weak spots of the small block toploader are the 1 1/16" input shaft and the 28 spline output shaft. Replace the input with an aftermarket 1 3/8" shaft (SBF lenght) and a BBF 31 spline output shaft (like found in a BBF) and you will have one extremely tough transmission. This is because the strength of the rest of the transmission is the same whether BB or SB as they use the same parts.

I drag race tested this combo with my car with a 427W in a 3550hp race weight (with the mods above) and also found that that was the limited. Prior to that I had twisted SBF input shafts behind a 393W with around 500hp. Swapping to the 1 3/8" input took care of that issue. Before that I could twist one at each race outing . . . .
 
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