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Au 4speed autos to Ef Differences 

 

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 Post subject: Au 4speed autos to Ef Differences
Posted: Wed Jun 23, 2010 11:37 pm 
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Hi everyone, I was looking at putting an Au engine into my old Ef falcon which I have seen done on various pages;I have seen the K-member mods etc but all the engine swaps I've seen haven't included the Transmission.

The plan would be to install both the Motor and box from a lower mileage AU Falcon to my higher mileage Ef.

Will the AU 4 speed auto fit straight into the Ef with no modifications i.e. are they a direct change over? are there any problems / pitfalls?

Thank you.
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Wed Jun 23, 2010 11:44 pm 
Getting Side Ways
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AU auto will bolt onto EF motor using the EF bellhousing

AU auto will bolt onto AU motor using AU bellhousing
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Thu Jun 24, 2010 12:32 am 
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Thanks FordFaimont, So Drive shaft's same length and yoke splines the same too?; just like to be sure, you know measure twice cut once sort of thing.
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Fri Jun 25, 2010 9:58 pm 
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Everything will fit from the EF, but i'm worried that the electrical side of the auto isn't compatible with the EF computer.

 

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EL build thread
Turbo DOHC - AU front suspension - AU IRS - T56 - xr kit
the-garage-f53/bbqburners-daily-turned-toy-d-t93182.html

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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Fri Jun 25, 2010 10:11 pm 
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Ride: GREEN ED XR6

Power: 249 rwkw

Location: CENTRAL WEST QLD
QLD, Australia

bushbuggy wrote:
Thanks FordFaimont, So Drive shaft's same length and yoke splines the same too?; just like to be sure, you know measure twice cut once sort of thing.


Spline is different as I have an AU yoke out of a wreck and wont go into the back of a ED auto dont know about the later but there is a difference in the spline there is a blank spot (where there should be another 2 grooves)

 

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AU2 engine with Hoppers head/cam performance package & spool rods / CP pistons ,Snort 1200 plenum, T56 Manual & Billet short shifter, Front & Rear Slotted rotors, Pedders lowered suspension, LSD and tuned with EMS stinger 4424 347rwkw THE ED XR6 IS BOOSTED

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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Sat Jun 26, 2010 8:58 am 
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Spline is different as I have an AU yoke out of a wreck and wont go into the back of a ED auto dont know about the later but there is a difference in the spline there is a blank spot (where there should be another 2 grooves)[/quote]

The output splines are all the same with BTR's - They are the same as T5's, C4's, Toploader & single rail 4 speed manual's - even the Borg Warner 35 - 51 3 speed auto's...

The wiring, solenoids etc inside are all the same & it all plugs together. The shift timing is controlled by a section in the ECU (If it's an EA-EB1 or a V8 version of a BTR - they have a seperate trans computer) - internal wiring is the same (6cyl & V8) in EA's - AU's.
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Sat Jun 26, 2010 9:43 am 
Getting Side Ways
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Ride: GREEN ED XR6

Power: 249 rwkw

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QLD, Australia

Ill take a photo of the AU yoke I have today and upload it ( Its from a 10/2002 AU sedan auto)

 

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AU2 engine with Hoppers head/cam performance package & spool rods / CP pistons ,Snort 1200 plenum, T56 Manual & Billet short shifter, Front & Rear Slotted rotors, Pedders lowered suspension, LSD and tuned with EMS stinger 4424 347rwkw THE ED XR6 IS BOOSTED

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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Sat Jun 26, 2010 11:31 am 
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Thanks fellas I knew it couldn't be so easy :roll: lol I was hoping just to buy the power pack from an AU and more or less just slot it in apart from the K-member mod, CAS and working out which accessories to use this sounded ideal.
I'll keep researching after the school holidays maybe try and look at a few at the wreckers; its becoming more urgent since yesterday after developing a bad intermittent miss hahaha just in time for the kids holidays..

Thanks so much for all your help I appreciate you taking time to respond.
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Sun Jun 27, 2010 10:50 pm 
Getting Side Ways
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AU front yoke is EB 4841 D as is EB, ED, EF, EL 6cyl sedan Autos.
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 Post subject: Re: Au 4speed autos to Ef Differences
Posted: Mon Jun 28, 2010 9:15 am 
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Papa Smurf wrote:
AU front yoke is EB 4841 D as is EB, ED, EF, EL 6cyl sedan Autos.



Thanks mate this puts my mind at ease a bit more; I'll start looking for a newer/low mileage AU motor and box withing the next month. I've seen a few EF/EL's for sale cheap (whole car) but I suppose its the same old same old with one of those, hoping the AU would be a bit more reliable in the head gaskets department :wink: my auto Trans has done 275K so might be wise to replace that too!
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