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1965 65 Mustang 4 speed to 5 Speed Conversion

8.6K views 21 replies 12 participants last post by  gt350clone  
#1 ·
Hello-

First, thanks for taking the time to read my situation. Any help is appreciated....

I have a 1965, 289 4-speed coupe. I'm looking to install a 5 speed.

I have an opportunity to buy a Low mileage T-5 from a 1987 Ford Thunder-bird Turbo coupe. It is a World Class Transmission and has the Tag # 1352-155.

Can I install this into my car?? Should I ?? Do I use an adapter plate for the 4 -speed Bell-housing or find a 5 speed Bell-housing?? What else will I need??

Lastly, I'm fairly handy and have "Most" of the tools.... Is this a Job I should do by myself....or... is it worth having someone else do it for a few hundred??

Any other suggestions????

Thanks-

Jeff

jncfreer@ sbcglobal.net
 
#2 ·
Cant think of a reason that you would want to use that one ,other than maybe because its free? they go for 2 or 3 hundred on ebay.
its one of the week ones, input shaft length is about
1/4 inch too long , pilot shaft diamter is not good for you ,but you can get a conversion pilot bearing cheap.
I see all negatives and no positives.
check out www.ddperformance.com for t-5 specs and other related info. 86-93 5.0 better way to go
 
#3 ·
p.s do a search on here for T-5, change over, there is tons of info on the subject in the past, also type in a search on Yahoo for T-5 lots of info there too .
start a parts list and do your homework carefully before you jump in.pretty much a direct bolt in if you gather your parts 1st.
 
#8 ·
Not to hijack a thread, but what the heck, here goes. After reading the link above, the article mentions that the tunnel opening did not have to be modified on a '65 and I have been under the impression that it does have to be cut. I have considered this conversion but do not want to cut the tunnel. Anyone with an actual '65 w/t-5, did the tunnel have to be cut?

Thanks in advance.
 
#9 ·
I have considered this conversion but do not want to cut the tunnel. Anyone with an actual '65 w/t-5, did the tunnel have to be cut?
I did it, and no it did not have to be cut. If, however, I chose to use one of those high-speed, short throw shifter units I believe it would have had to be cut a wee bit to fit.
Dave
 
#11 ·
Or, you can bolt it to a T-5 bellhousing and use a hydraulic/cable clutch and still not have to cut.
Some have said they have to cut and others don't have to. I didn't, but it was close, perhaps 1/2" clearance. Perhaps the kind of motor mounts used is enough to make the difference?
Dave
 
#12 ·
I thought finding a GOOD 5 Speed was going to be easier.... Any suggestions on a type, year, model, etc...??? Any ideas on where to go, eBay doesn't have alot. BTW- I live in Sacramento, Ca. any good shops in the area that might do it for me for a reasonable rate??? Thanks-
 
#13 ·
I changed from a Toploader to T-5. Used late model everything from the crankshaft back. Had the flywheel cut down from 50 to 28 oz imbalance.

I did use a B&M Ripper Shifter, and I did open the square of the tunnel hole just a smidge. Not enough to affect the tunnel if I had to put it back to a 4 speed tho.
 
#15 ·
Use this chart to see which ones are the "desirable" ones.
http://www.fordmuscle.com/archives/2000/09/t5swap/index2.shtml
As to where to find one...well, that's the hard part. If you find one in a bone yard, you takes your chances. If you find a so called "rebuilt" one, well, you takes your chances there too. If you want a good one, with a warranty, you're either going to pay close to a new one or buy a new one to begin with. Unless, of course Lady Luck is on your side. When I went looking I discovered that the good ones aren't nearly as plentiful as I was led to believe.
Good luck :)
Dave
 
#17 ·
Hell, for the effort of swapping the tranny, I'd just put a C-6 in there. More gears usually means more speed, and in most cases, even better gas mileage. (Engine is turning less RPMs, even at a higher speed. Think of overdrive in trucks, where you can cruise at 65 mph, only turning 1500 RPMs.)
 
#18 ·
I have a 5 speed from an 84 Mustang GT if you are interested let me know shouldn't be to tough to ship I'm in NJ
 
#19 ·
I had to cut the leading edge of the hole in my tunnel about 1/4" to 3/8" to clear my Pro-5.0 shifter, but had I run the stock shifter I would not have had to cut at all.
 
#21 ·
Hell, for the effort of swapping the tranny, I'd just put a C-6 in there. More gears usually means more speed, and in most cases, even better gas mileage. (Engine is turning less RPMs, even at a higher speed. Think of overdrive in trucks, where you can cruise at 65 mph, only turning 1500 RPMs.)
You do realize the C-6 has only 3 gears, none of which are overdrives?