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post #1 of 8 (permalink) Old 10-08-03, 03:38 PM Thread Starter
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BTR 4spd to 250 crossflow?

Hey guys, just wondering if anyone knew if a BTR can be easily thrown onto an alloy head 250 crossflow? If it cant be done easily, what is involved and what do i need? How strong are the BTR boxes, can they handle a bit of power/torque?


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post #2 of 8 (permalink) Old 10-09-03, 06:31 AM
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Re: BTR 4spd to 250 crossflow?

no problem with power i have 230+rw kw tough mine ,wiring may be a problem being electronic.

it would be easyer geting motor & gearbox and computers.
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post #3 of 8 (permalink) Old 10-09-03, 07:10 AM
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Re: BTR 4spd to 250 crossflow?

Dont the early boxes have a seperate computer, if they do then you can just connect it up, along with the TPS? i am looking at doing this conversion myself sometime.

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post #4 of 8 (permalink) Old 10-09-03, 08:56 AM
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Re: BTR 4spd to 250 crossflow?

grab a 4speed auto and TCM+wiring and as many wiring diagrams as you can lay your hands on. Get the box+wring from an EAII / EBI

Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............
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post #5 of 8 (permalink) Old 10-09-03, 06:58 PM Thread Starter
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Re: BTR 4spd to 250 crossflow?

So it should just bolt straight up to a crossflow? What do you mean by, TCM and TBS?

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post #6 of 8 (permalink) Old 10-09-03, 07:13 PM
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Re: BTR 4spd to 250 crossflow?

TCM = trans control modual
TBS = no idea
TPS = throttle position sensor

Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............
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post #7 of 8 (permalink) Old 10-10-03, 12:50 AM
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Re: BTR 4spd to 250 crossflow?

They have a different bellhousing bolt pattern from XF to EA - AU

But the bellhousing from a 3spd MAY fit onto the auto box and make it possible to use it. You'd be best to ring an auto trans shop and ask them a few questions.

In terms of the computer for it, like has been said spome had a separate control module for it, so with a bit of electrical knowledge I'm sure that could be done.

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post #8 of 8 (permalink) Old 10-11-03, 12:55 AM Thread Starter
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Re: BTR 4spd to 250 crossflow?

yeah sorry TPS is what i meant to say, ha ha, my bad...

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