1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections
View Poll Results: wich rear end
stock gslse rear (4.076)
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4.44
2
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or other
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4.44 rear end and turbo mix

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Old 11-18-02, 12:05 AM
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back with rotaries

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4.44 rear end and turbo mix

do you think that is a good idea for the street. im planning later after i finish the turbo setup, to put a tII tranny in my car, with probaly a 4.44 gear in the rear end. what you think?

Last edited by eddierotary; 11-18-02 at 12:08 AM.
Old 11-18-02, 12:47 AM
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There has been a bit of discussion on this topic on an Oz forum, and it seems to be a very popular choice for street cars.

I would go either a 4.4 or 4.1 with a TII tranny. Most likely the 4.4. It'll get the motor into the rev range it likes and is certainly better suited to a turbo rotary.
Old 11-18-02, 12:55 AM
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Go the 4.4s
Old 11-18-02, 01:29 AM
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when I switch to a ford 9.0 rear, I will be using a 3.73 rear end. Maybe even smaller. It will provide Less wheelspin, it will create more load (good for Turbo's), I will have a usable first gear, and a lower highway cruising RPM. A rare win-win situation I believe.

But that's just IMO.

BTW, that's one of the ways the 1000HP Street-class Supras finally started to get really fast in the 1/4. Lighter flywheels and shorter gear ratios made for less wheelspin and more forward motion of the line.

My mentality is for 99% street use, so that's my opinion.

However, if you're on slicks like Steve and other hard core draggers are, then go with the high gearing. Wheelspin is not a problem on huge slicks with only 15lbs of air pressure in them.
Old 11-18-02, 02:16 AM
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Originally posted by Directfreak
Wheelspin is not a problem on huge slicks with only 15lbs of air pressure in them.

15psi in the slicks?! Are you putting it on the trailer or something??

When I did 10.8 on the weekend, I had 9.5psi in each slick
Old 11-18-02, 08:17 AM
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Originally posted by AJC13B
15psi in the slicks?! Are you putting it on the trailer or something??
My bad. 9.5? Damn, that is nothing. I am suprised you can even get back to the staging area. I have never raced with true slicks, So I didn't know that you can go so low with them. I have raced with street radials, but, you do need some air in them to turn, or you'd screw up the rims.

ALSO:Steve, what do you think about my "3.73" rear end idea? - for street use? I've been wanting you opinion on that for a while.

Originally posted by AJC13B
When I did 10.8 on the weekend, I had 9.5psi in each slick
What happened? I thought you were shooting for 9's? Did Something break? I know you've gone lower Et's before.

Last edited by Directfreak; 11-18-02 at 08:27 AM.
Old 11-18-02, 01:34 PM
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back with rotaries

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is not mainly for drag racing, probably a few time to see the improvement but is more street and road course use. ill probably stick with the stock gear. thanks
Old 11-18-02, 03:53 PM
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Fried the new twin plate I had

New one is going in...

As for the 3.73 ratio....unless you are shooting for monster HP, I think its a step in the wrong direction. I know HITman is taking that path, but he will be making more power and torque than you and me combined

Personally, I would pay for stickier tyres to reduce wheelspin and stay with higher gearing for better acceleration combined with traction
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