Ba 4 speed limits.

[Goeer]

Could anyone help with my box concerns. I currently have 333 kw at the wheels of my s/c 4 speed GT, and would like to boost that by 100 kw. I am wondering can the 4 speed be reliable at these figures. I have read that I could put a larger oil pump on the box, but have decided I don't need a cooler since I don't tow and only do 3000 kms per year in the GT. I figure I am killing two birds with one stone by replacing the radiator every ten years (milkshake, cleaner cooler engine block ) than buying a bypass cooler. I also don't thrash the car, but do go WOT once a fortnight, for about 7 seconds.  The car only drives at highway speeds about 4 times a year. I also have learnt that the 4 speed did get strengthened a little bit for the GT to handle the extra 50nm it had over the turbo at the time. By how much and whether it really matters who knows ? I am also wondering if self shifting puts extra strain on the auto. I read somewhere on this forum that hard shifting is good for the box, but I am having a hard time believing that. Ps. Mine was tuned for harder shifts by Bluepower when the s/c was installed.

[k31th]

hard shifting wears out the friction surfaces slower, but has the risk of breaking hardened parts if the alignment is no good when a hard shift is engaged.

 

333rwkw is already at the limit of the 4sp without significant strengthening and/or maintenance. 100kW added will surely end in disaster with regard to the gearbox.

[Goeer]

That's disappointing to hear. I could of bought a g6et with only 70k on the clock for 6 grand less than my s/c Ba with 100k on the clock. ( does have 7000k worth of factory extras though ) Oh well, I always wanted a supercharged v8 and now I guess I have one.  333kw is enough to get me into plenty of trouble anyway.

 

I like how in drive I cant even feel the shifts, but when self shifting its like driving a totally different car.

[JETURBO]

It’s because we can tune the automatic gearboxes for two different modes ( performance over to the left ) and normal ( straight down into “D” ) 

 

its common to leave normal mode smooth and seamless and then have performance mode in a more agressive engagement style 

 

best of both worlds some would say  

[k31th]

^^ this.

it's a winner of a combination

[Goeer]

I agree with you guys, I do like it, shame its a 4 speed. Anyway, I still think its a better box than anything Expensive Daewoo had up until the end of BA series 2.  I don't know what there VE and newer boxes are like but I have owned 2 older Expensive Daewoo v8's  and I thought those boxes sucked. They didn't know what to do half the time.

[El Andrew]

I used to drive VXs and VZs heap for work when I had my EL. The gearboxes were chalk and cheese. The Daewoos were rubbish.

I've always liked the BTR - super smooth and good ratio spacing.

After a few weeks with the ZF though, I'm in love.

[Goeer]

It took me a while to work out that fords were better. Through misfortune with woman and gambling, and stupidity with drugs and alcohol I had become nearly penniless and needed a car. I bought an AU 6cyl for 800. I quickly learnt that the au was a great car, smooth in every department. I had never owned a v6, I could tell they were crap just from been a passenger. I have owned vt 5.7 and vz 5.7 and they are great engines, but the rest of the car leaves a lot to be desired. (fe2 way to firm, box, leaky main seal on both) I think the gen 3 is 1 second faster to 100 than the boss 290, so when my s/c ba gt came up for sale, I thought I could have the best of both worlds,and I was right. I think the gt suspension is a great compromise between soft and firm. So there lies my story from red to blue.

[camo86T]

So you got a safe or dangerous diff in the gt...

[arronm]

Tuned box in my VF is sweet. So is the tuned ZF in the territory. Not as good as the manuals though. So little cost to handle big power.