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Author Topic: What gearbox?  (Read 3061 times)

Vince

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What gearbox?
« on: February 16, 2009, 01:58:12 PM »
Hi guys,
I'm just about to put an XF injected 250 Turbo motor in my TD 3.3 Auto. The XF motor has a 4 speed manual BW box, I want to go with manual but want a 5 speed. Running about 350hp (for road use only) what 5 speed would be an easy conversion, cost effective and survive with this combo.
Should I stick with the 4 Speed?
Any help will be appreciated
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BigNorm

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What gearbox?
« Reply #1 on: February 16, 2009, 11:55:12 PM »
there isnt a cost-effective gearbox which will handle 350hp thru overdrive. the single rail wont last either. a toploader will handle the hp but doesnt have overdrive. otherwise u might need to up your budget.
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Vince

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What gearbox?
« Reply #2 on: February 17, 2009, 10:17:33 PM »
ok, what should I up the budget to?
Has anyone tried fitting the Sierra cosworth 5 Speed to a crossflow? Externally they look the same as the BW-T50D used in some of the later XF's (so the gregory's manual says). I used one in my MK1 Escort drag car behind a 450hp Cosworth engine I did break it but only once I got to using the nitrous. Broke the engine a few times as well. I can get my hands on a Cosworth gearbox from UK but don't know if I can get it to fit.
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forgott3n

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What gearbox?
« Reply #3 on: February 23, 2009, 01:12:53 PM »
You can get a T5 from Redline Auto that has had the standard gears replaced. Last time i looked into it they wanted $2500 for one.
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BigNorm

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What gearbox?
« Reply #4 on: February 24, 2009, 10:52:18 PM »
i doubt a sierra box would handle the torque of a  turbo 250.  if its the same as an xf box then it definitely wont cos they were shit.
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Vince

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What gearbox?
« Reply #5 on: March 02, 2009, 10:46:21 PM »
So what 5 speed could I use? Any ideas?
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Vince

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What gearbox?
« Reply #6 on: March 02, 2009, 10:48:00 PM »
Here's what Burton's in Uk say about the Cosworth Box.

   

   Borg Warner T5 Gearbox
5 speed HD Borg Warner box with all alloy casing.
One of the strongest boxes fitted to a production European Ford car -  it originated from the American Mustang.
1” x 23 spline input shaft.
Fitted in Sierra/Sapphire Cosworth 2wd
Oil capacity 2.55 litres.
Standard oil grade ATF.
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BigNorm

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What gearbox?
« Reply #7 on: March 06, 2009, 08:49:13 PM »
give it a crack. one way to find out if a 2.0L gearbox will handle the torque of a turbo 250
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TF3webbers

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What gearbox?
« Reply #8 on: October 09, 2010, 09:08:45 PM »
this is probably abit late but a T5 will handle the power from most facons they are a good 5 speed i know of a few running in later model falcons running a over 350hp at the wheels and havnt had any problems with the box just the borg warner diff dosent like the power
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