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Topic: Transmission Crossmember (Read 1761 times) previous topic - next topic

Transmission Crossmember

I don't have the ability to see the car right in front of me at the moment so I can't look, but is there any way to get more rearward room for mounting a transmission to the stock AOD cross member? Can the cross member be flipped or anything to move the mounting slots further back? I'm assuming I just need a new adjustable one to get additional length I need at the back but figured I'd ask before blowing $150 on an aftermarket one.
1988 Thunderbird Sport

Transmission Crossmember

Reply #1 –
Can you weld? Anything is possible.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Transmission Crossmember

Reply #2 –
Don't know how to weld but do know DIY. I'm trying to avoid that at the moment due to lack of skill and what I have available to me (can get a welder to use but it seems easier to just buy a different part than learn something I won't need to use again anytime soon. Car doesn't need any metal work.).
1988 Thunderbird Sport

Transmission Crossmember

Reply #3 –
What tranny?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Transmission Crossmember

Reply #4 –
get the welder!  it's a blast to learn and do!  :D
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Transmission Crossmember

Reply #5 –
Quote from: vinnietbird;232626
What tranny?


4r70w
1988 Thunderbird Sport

Transmission Crossmember

Reply #6 –
Quote
I don't have the ability to see the car right in front of me
Here's the best pic I have, when my exhaust was out... looks like it's about as far back as it can go without welding.
.
Death awaits you all with nasty, big, pointy teeth.

1988 5.0 Bird, mostly stock, partly not, now gone to T-Bird heaven.
1990 Volvo 740GL. 114 tire-shredding horsies, baby!

Transmission Crossmember

Reply #7 –
Quote from: Seek;232643
4r70w

Let me know how you end up getting it to work. I'm about to have the same problem.

Transmission Crossmember

Reply #8 –
The 4R70W is longer than an AOD?
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

Transmission Crossmember

Reply #9 –
how much longer is it?
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
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5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
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Transmission Crossmember

Reply #10 –
Mount is 1" back, entire transmission is 7/8" or something. Ford Racing says the stock 4.5" crossmember is the same as their adjustable ones, but spot welded to keep it from moving?
1988 Thunderbird Sport

Transmission Crossmember

Reply #11 –
Quote from: Seek;232759
Mount is 1" back, entire transmission is 7/8" or something. Ford Racing says the stock 4.5" crossmember is the same as their adjustable ones, but spot welded to keep it from moving?

Yeah. Doesn't look like the "adjustable" will work.
You've probably already seen it, but here's a thread on the corral discussing putting a 4R70W into a Fox. [1]
I think I'll just buy a crossmember made for the swap. The only one I've found is from Baumann for $119.95. Have you seen any others that will work?

Transmission Crossmember

Reply #12 –
I haven't really looked but thats all I've seen. From talking with, I think, Karl Baumann, their crossmember is basically a stock crossmember but with more metal going to the rear with longer slots for the bolts. My TCS already shipped out so I don't have any reason to hurry the decision on whether or not I need to buy an aftermarket crossmember. It sounds like it may indeed go to just welding more metal onto the stock crossmember.

There seems to be much more information on the 4r70w on other Mustang forums than corral. Google got me to some stangnet threads that got into a little more detail but specifics like 2000+ internals were never answered.

Either way, the engine and transmission are going in this weekend as long as weather allows. The transmission just won't be mounted right away in worse case. 3 weekends from now it should be getting tweaked and driven after I get a driveline made.
1988 Thunderbird Sport