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Changed 5th gear ratio-Tremec T3650 

 

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 Post subject: Changed 5th gear ratio-Tremec T3650
Posted: Fri Apr 21, 2006 10:50 am 
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For those of you that have this box you will know it is a huge distance between 4th and 5th gear and the car dies in the ar*e and on hills gives no performance. I drove 900km to Mal Woods and had him change the ratio of 5th gear and what a difference it made, this car on the Putty road now convincingly overtakes up hill in 5th. I went from 0.62 to
0.74 and it now revs just under 2250 at 100km/h and around 2400 at 120km/h. I never drove (mostly) faster than this anyway but now it gets up and goes when you put your foot down at that speed in 5th. Overdrive can also be used from 70km/h now. It was a good low cost mod.($700)
more than happy but a six speeder would be better. At $7000 I will have to think about that one.
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Posted: Fri Apr 21, 2006 11:08 am 
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mmm imho
5th is an overdrive gear for crusing at 100kmhr+ not desined for overtakign or going up hills

so u drove 1800kms + $700 so u can be lazy and not change down a gear?

understand if the car was to be used on a race track but not the rd..

 

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Posted: Fri Apr 21, 2006 11:44 am 
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{USERNAME} wrote:
mmm imho
5th is an overdrive gear for crusing at 100kmhr+ not desined for overtakign or going up hills

so u drove 1800kms + $700 so u can be lazy and not change down a gear?

understand if the car was to be used on a race track but not the rd..


4th was revving too much for cruising once I got above 80km/h and 5th would then rev at 1200 and even at 100 revs would be too low and the change down to 4th would sound like you were up it. The change gives a better overdrive which just happens to also give performance on the power output of the engine. It stiil is an overdrive and used as such but the distance between 4th and 5th was rediculous. It would be like me removing your 4th gear the constant changing and revving the sh*t out of your engine would change your mind. It is far more suited and effective for use at 100 to 120km/h as an overdrive now, before it was more suited for cruising at 140km/h and Im sorry but I'm mid forties and unfortunately stay closer to the speed limit. Cheers.
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Posted: Fri Apr 21, 2006 12:33 pm 
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What car have you got this in ?

 

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Posted: Fri Apr 21, 2006 12:50 pm 
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{USERNAME} wrote:
{USERNAME} wrote:
mmm imho
5th is an overdrive gear for crusing at 100kmhr+ not desined for overtakign or going up hills

so u drove 1800kms + $700 so u can be lazy and not change down a gear?

understand if the car was to be used on a race track but not the rd..


4th was revving too much for cruising once I got above 80km/h and 5th would then rev at 1200 and even at 100 revs would be too low and the change down to 4th would sound like you were up it. The change gives a better overdrive which just happens to also give performance on the power output of the engine. It stiil is an overdrive and used as such but the distance between 4th and 5th was rediculous. It would be like me removing your 4th gear the constant changing and revving the sh*t out of your engine would change your mind. It is far more suited and effective for use at 100 to 120km/h as an overdrive now, before it was more suited for cruising at 140km/h and Im sorry but I'm mid forties and unfortunately stay closer to the speed limit. Cheers.

You'r showing your age boy, I'm afraid I still cruise on the edge, road conditions permitting particularly out west between broken hill and Adelaide :roll: :twisted: :twisted:
And yes I need a 6 speed too :D :D

 

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Posted: Fri Apr 21, 2006 1:14 pm 
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You'r showing your age boy, I'm afraid I still cruise on the edge, road conditions permitting particularly out west between broken hill and Adelaide :roll: :twisted: :twisted:
And yes I need a 6 speed too :D :D[/quote]

live in non rural areas im afraid where cops are savage revenue raisers and you often get caught.
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Posted: Fri Apr 21, 2006 1:16 pm 
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{USERNAME} wrote:
What car have you got this in ?



AU3 Pursuit250 with exhaust,cold air improved cooling and ECU mod.
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Posted: Fri Apr 21, 2006 1:46 pm 
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I can synpathise with wanting to change it. I did that V8 Super Car experienc thing at eastern creek, drove one of those stripped out GT's. Going down the straight you would rev the tits out of it in 4th and then when shifting to 5th it had nothing, the rev drop was massive and it did'nt even feel like the car was accellerating anymore (or very slowly).

I think that it was money well spent on your part.

 

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Posted: Fri Apr 21, 2006 2:38 pm 
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{USERNAME} wrote:
You'r showing your age boy, I'm afraid I still cruise on the edge, road conditions permitting particularly out west between broken hill and Adelaide :roll: :twisted: :twisted:
And yes I need a 6 speed too :D :D


live in non rural areas im afraid where cops are savage revenue raisers and you often get caught.[/quote]
I feel your pain once a revhead ALWAYS a revhead we only get wiser and watch conditions (and camera points ) much more carefully :roll: :roll: :twisted: :D :D

 

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