Originally Posted by brenx
How long the box been in the car? The possible reason it's lasted is because of wheelspin. The engines not loading the box up. Put a set of slicks on and see how is goes. What rpm histall? If it's below 3500rpm? It'll last as it's not generating much heat. If a holden owner can run around with a 5500rpm histall I should be able to aswell.
I run street tyres for r/w purposes only. Wheelspin is dangerous. I am 100% sure I can blow one of their boxes
I'll give them a go when this one pops
Quality is nothing to do with $. You just need a knowlegable builder. $ = paying for the name nothing else. Gregaust (FF user) seems to know what he's on about with autos. He's a wealth of info.
To give you an idea. My front clutch pack has 6 clutches (4 is standard), solid band (stock band is flexable as hell), billet servo outer housing with a stronger spring (as the stock outer housing will bend under pressure), transgo full manual valve body.
I personally think the B&M VB
(valve body) gives a nicer shift than the transgo.
Box has been in the car for @ 12 months. This car is driven like it's stolen.
Probably done 3000 abused street kays ( = 10,000 normal kays )
4500 stall , 4.11 rear end and has repeatedly shown over 500Nm torque on the dyno ( rear wheel ) and 270 Rear wheel killowatts. The potential is for @300 RWK when the Demon Carb has been adjusted and set properly. ( It's been difficult to find a guru to tune these things )
From memory their extreme box has a Lifetime warranty so even if you do manage to destroy it, they'll replace it so you can't really go wrong.
You are right about quality not always costing, but the money we paid for this box went in to all the blueprinting process and 3 days labour to put it together. Heaps of time spent on wet blocking components so that they are completely flat , 6 pin heavy duty steel planetaries with needle roller bearings , heaps of time spent on the valve body to get the shift points and shift feel right in every gear, not just the typical 1st - 2nd tough shift and then the crappy 2-3rd shift.
I think you'll find that there is no greater punishment for your box than wheel spinning at 4-5000 RPM and then getting hook up. ( tends to bend things real quick, including axles )
Anyway, like you said, time will tell and I'll post you if we break it...
Who built your box ???
What's actually going wrong with it ????