T-10 or T5?

[65acode]

I need some input and suggestions! I thought my game plan was well thought out and sound, but yesterday I discovered an issue that has me wondering which path to take. Let me give you some details on what I have.

My car is a 65 coupe, A code 4-speed car. I've decided to keep the original 289 on an engine stand and give it something fun under the hood. I now have a fairly built 347 (based on a 1990 5.0 roller block, 28 oz balance), and intended on using the original T-10 since I'm told a T5 would live long behind it. Is this reasonable? I haven't seen anyone else do this, but I don't see why it wouldn't work with the original style flywheel and clutch? I noticed when I pulled the engine and trans last summer that the output shaft had some RTV around the seal, but didn't think much of it. I went to replace the seal last night, and found that the RTV was filling a 3/4" x 1/2" gap that was missing! :rant It looks like someone has dropped the transmission at some time, and the casting broke away around the bottom of the tailshaft housing. . :rr
http://s1348.photobucket.com/user/65...761d2.jpg.html
http://s1348.photobucket.com/user/65...0c7a7.jpg.html
http://s1348.photobucket.com/user/65...227e1.jpg.html
I guess this is a good time to step back and evaluate whether to continue down the T-10 path (I'm looking for a replacement rear tailshaft housing locally as we speak), or consider a world class T5 swap? I won't be drag racing it with slicks, I'm just after a fun and good handling car that I can auto cross and possibly open track on occasion.

Lastly, I was hoping that I can get some feedback on what headers you may have used. Some say Hooker Super Comps, some say no, etc, etc. I'd hate to choke down a 400 hp small block with restrictive headers (1 1/2 Tri-y style), but I want something that fits well and won't drag over speed bumps.

Sorry for the long email, I'm just trying to take a breath and ask for some feedback from those that may have been in a similar spot.

Thanks in advance!

 

[Shaun]

I wouldn't put more than 400hp through a T5. Stick with the T10 or install a TKO600 if you want a 5th gear.

 

[Midlife]

I always thought that the T-10 was far inferior to the later T-5 series; I know that the Ford toploader is superior to the T-10.

 

[cmayna]

Based upon your possible plans of auto cross or some track time, I'd not hesitate but go TKO600.

 

[Ponyman66]

I always thought that the T-10 was far inferior to the later T-5 series; I know that the Ford toploader is superior to the T-10.

Lots of myths and fallacies exist about the maligned T10. The toploader is indeed a better tranny. Don't forget though, the big cubic inch, big horsepower Fords of the early 60's ran...tada...a T10! Even the '65 Shelby came with them. They're a good tranny, there's just better ones now.

 

[DEL65]

In order to fit a TKO in a 65-66, you will probably have to do some big mods to the trans tunnel. Alternatively, there are aftermarket gear packs for WCT5's that should fit your HP ratings. I love my WCT5.

Your header choice will depend on $ and your clutch package: zbar, cable, or hydro. I run Hooker Comps (not Super Comps) and a zbar. My front is dropped 3+" and I do occasionally scrape speed bumps and steep d/ways.

Shortys are a way to go, and the HP drop is minimal. AFIK, only JBA makes one that fits a zbar. Otherwise you'd have to use shortys and the other two types of clutch setups. PM me if you have have any other detailed questions.