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Transmission Swap

1678 Views 9 Replies 4 Participants Last post by  SGT_Stang
Will I be able to use a T-45 from a 99 mustang in my 66 mustang? It has a broken 3-speed automatic in it at the moment and I have a crate 302 engine from Ford Racing.

Thank you.
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Nope...integrated bellhousing, and Mod-motor specific bolt pattern. Besides that its a POS more or less. Rebuilding a C4 is very easy and costs $200 or less to DIY, and add a bit more for performacnce frictions and a shift kit :D Get the Haynes C4 manual and parts from Tran-Star and your good to go!
5.0 in a 66 said:
Nope...integrated bellhousing, and Mod-motor specific bolt pattern. Besides that its a POS more or less. Rebuilding a C4 is very easy and costs $200 or less to DIY, and add a bit more for performacnce frictions and a shift kit :D Get the Haynes C4 manual and parts from Tran-Star and your good to go!
Well I want to put in a new manual transmission. I guess I'll just have to save up and buy myself a T-56 or something.
Get a big blowtorch to go with that T56 too :D I'd love to have one, but they fit like sh!t in classic Mustangs. If you're set on a 6spd, a Richmond unit fits as good as the factory 4spds :D Or, you can buy a G-force T5...fits just as good as a regular T5 and takes 450+lb/ft :D I'd do a Richmond swap, but that's to the tune of $3100, for the trans, and the hydraulic TOB is several hundred alone :eek: and you HAVE to do most of it yourself (not that I wouldn't) A Geforce T5 is about $2400 and the rest of the swap stuff is downright cheap in comparison to the Richmond!
Why don't you put in a T-5 out of a late model mustang (87-93). I am actually doing the swap right now. There are tons of instructions on the web. And the bellhousing with the T-5 will fit right in on the 302. I got the T-5 for about $300 the bellhousing will cost me another $70 and I got a conversoin kit off of ebay for $280. So that's all that I paid for and I am doing the swap myself. While I am at it I will do the cable clutch conversion as well. That will cost me another $100.
SGT_Stang said:
Why don't you put in a T-5 out of a late model mustang (87-93). I am actually doing the swap right now. There are tons of instructions on the web. And the bellhousing with the T-5 will fit right in on the 302. I got the T-5 for about $300 the bellhousing will cost me another $70 and I got a conversoin kit off of ebay for $280. So that's all that I paid for and I am doing the swap myself. While I am at it I will do the cable clutch conversion as well. That will cost me another $100.
That sounds great, but how good are the transmissions? Whats their torque capacity and all of that? Will I just have to replace it soon or will it last?
Here, go to this site for the spec
http://www.moderndriveline.com/Technical_Bits/transmission_spec.htm

And go to these sites to know more about the swap
http://www.moderndriveline.com/Technical_Bits/tech_alley.htm
http://www.mustangandfords.com/techarticles/5272/

What I've gathered over the course of few months......this is a very common mod for the early stang...now if you have aftermarket mods done to your motor to increase hp significently then the T-5 probably isn't for you. You might as well go with a Tremec 3550 or something big like that. But then you will have to adjust the tranny tunnel. For me it was a good decision, coz I want a daily driver and I am not racing.

I am just about ready to start the swap, so in about a week or two I will be able to let you know how easy or hard it was.
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The swap is very straight forward if you use the links provided above.... The clutch cable may give you a small challenge with long tube headers....
Well I plan on eventually adding a supercharger/turbocharger and other parts to boost my horsepower and torque so I don't want to have to just replace the transmission when my mustang gains power. I was thinking about buying the Gforce t-5...
gt40racing said:
The swap is very straight forward if you use the links provided above.... The clutch cable may give you a small challenge with long tube headers....
gt40racing, seems like you have done the swap yourself. I am getting ready to do the swap this week. Now, my question to you is, can you do the clutch cable conversion without buying one of those expensive kits that they have available. I am thinking getting a late model clutch cable and a quadrant and a billet and weld the quadrant on top of the clutch padel, then make a small hole on the firewall put the billet through for adjustment and brace the billet with somekind of metal part that's bolted onto the cowl to firewall joint? Do you think that's possible. What problem could I have with headers, coz I am thinking about putting some tri-y headers in the future. It will be helpful if you can tell me a little about the conversion and what your experieces were like.
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