Which Transmission?

[92LX_Stroker]

I have a 347 with a C4 currently for my 67. I would prefer a stick shift set up. Any recomendations on what to go with? Its a daily driver, might see the strip once for a time.

 

[1966conv]

What gear ratio are you running?

Guessing that the 347 makes at least 350 RWHP @ 20% parasitic loss = appx 430 FWHP.(YMMV) You should either run a TKO 500/600 or a toploader if you want manual. A five speed gives you the best of both worlds, but the toploader is more vintage.

 

[92LX_Stroker]

Currently I dont know what is in the pumpkin, but when I get to it, 3.73

 

[67Dylan]

Either the Tremec TKO, or if you want a 6-spd the T-56. Either one will handle the power you have and should make you happy IMO.

 

[92LX_Stroker]

What about a T-5 from a late model mustang? are those worth it to rebuild?

 

[67Dylan]

What about a T-5 from a late model mustang? are those worth it to rebuild?

I've seen a few t-5'S behind nitrous'd motors running in the 10's last a full season, BUT I'd never do that. Depending on how you drive it and how much power, they will/could give up and you'll end up either upgrading or rebuilding. What would suck is if you got on it and it grenaded... IMO buy the tremec now and you'll always be confident.

 

[57fairlane]

the TKO or cheaper is a 3550, same case . . .

 

[Jester67]

G-Force T5 is the easy rough the T56 will require major Tran’s tunnel work. I just noticed an advertisement in mustangs and ford for a company that clams to have a TKO conversion kit with on cutting but up until now the general consciences is that it too required Trans cutting. Top loader is vintage but with the price of gas and the cost of the conversion little or no, different I would get one with overdrive. And because it will come up the Richmond 6, speed is also a direct bolt in but it is much cash o roma

 

[SuperSnake428]

My Vote

TKO 600.. hands down

 

[Sicarius428]

TKO 600 or 500. My T5 didn't hold up to my 302... I don't think your 347 would be to kind to it too. The TKO500 has a shorter first and second. Since you probably aren't lacking any torque and with 3.73 in the future the TKO600 would be a better choice IMO.
Kevin

 

[67Dylan]

Just an FYI, the 3550 is no longer made. The TKO has replaced it, but you could find some used ones or maybe a few dealers still have some... I dunno.

How about the liberty T-5? http://www.libertysgears.com/proshift.htm

 

[D.Hearne]

Depending on where, how far and how fast you drive and your engine's powerband, the Toploader could very well equal an overdrive transmission in fuel mileage. Sometimes dropping the rpms lower than the powerband of the engine will result in less fuel mileage, not more. My 331-sixpack in my 89 Ranger with a 3.55 rear gear (that's what the actual gear/tire combo works out to in a Stang with 26" tires) and it's Toploader 4 speed would pull down 16 mpg, if you kept your right foot disapplined in highway driving and cruising at 60-70 mph. The rpms at that speed ranged from 2687-3100 rpms.

 

[Shakin66]

My vote...
T-56
But I got mine cheap and was willing to refab the tunnel.