Auto- manual
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2nd Gear
Joined: Jul 2018
Posts: 2
Likes: 0
Auto- manual
Hey guys I have a 75 corvette with a motor (450ish HP) and it has the original 3 speed and I want to put a manual in without hacking I've found kits but their about 6k what transmissions will fit and ones that do what do I need to get I know rear trans mount flush etc but don't know much in trans world all help appreciated. 
Last edited by Carguy1337; Jul 7, 2018 at 09:30 PM.
Drifting
Joined: Jun 2005
Posts: 1,950
Likes: 498
From: Chino Hills CA
There's lots of threads out there with options and choices, but I'm a fan of the Borg Warner WC T5. Price is right, Internal shift rails have nice modern action, installation is straightforward, and the .63 overdrive 5th is a joy. They're only rated at 320 ft-lb, so no powershifting, but mine's been hanging tough for 13 years now.
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
Hey guys I have a 75 corvette with a motor (450ish HP) and it has the original 3 speed and I want to put a manual in without hacking I've found kits but their about 6k what transmissions will fit and ones that do what do I need to get I know rear trans mount flush etc but don't know much in trans world all help appreciated.
[Hey guys, I have a ‘75 Corvette with about 450 Hp and the original 3 speed trans. I want to put in a manual trans without hacking up the car. I’ve found kits, but they’re about 6K. What transmissions will fit and what will I need?
I know a bit about transmissions, but any help would be appreciated.
]Carguy, there are several transmissions you can choose from. The Turbo Hydromatic TH400, (200R or the 700R desired for having an overdrive gear for the highway, I prefer the stronger 700R of the 3.
I’m not a transmission expert so let those guys chime in.
Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 330
From: Indy Indiana
here is a decent list, although not exhaustive...
z-bar bracket
bracket mount on frame
ball and stud for z-bar mount.
pedal assembly
pedal push rod
pedal push rod boot
pedal foot pads
flywheel
flywheel bolts
bell housing
clutch and pressure plate
pilot bearing
throwout bearing
clutch fork
clutch fork ball pivot.
transmission, rebuilt with new seals/synchros
shifter
shifter mount brackets
shifter linkage
shifter boot
speedometer driven gears
speedometer drive gears
ujoint
rear transmission yoke
gear oil
reverse lockout setup
depending on year, emisions hookups
driveshaft length changes?
transmission mounts interchangeable?
Backup light switch.
trans to bellhousing bolts.
z-bar bracket
bracket mount on frame
ball and stud for z-bar mount.
pedal assembly
pedal push rod
pedal push rod boot
pedal foot pads
flywheel
flywheel bolts
bell housing
clutch and pressure plate
pilot bearing
throwout bearing
clutch fork
clutch fork ball pivot.
transmission, rebuilt with new seals/synchros
shifter
shifter mount brackets
shifter linkage
shifter boot
speedometer driven gears
speedometer drive gears
ujoint
rear transmission yoke
gear oil
reverse lockout setup
depending on year, emisions hookups
driveshaft length changes?
transmission mounts interchangeable?
Backup light switch.
trans to bellhousing bolts.
Race Director
Joined: Aug 1999
Posts: 18,126
Likes: 174
From: WI
Melting Slicks
Joined: Jun 2011
Posts: 3,114
Likes: 597
Hey guys I have a 75 corvette with a motor (450ish HP) and it has the original 3 speed and I want to put a manual in without hacking I've found kits but their about 6k what transmissions will fit and ones that do what do I need to get I know rear trans mount flush etc but don't know much in trans world all help appreciated.
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Pro
Joined: Oct 2009
Posts: 664
Likes: 89
From: Marysville Ohio
I did this conversion with a TKO 600 kit from SST - you are right, price was between $5 and $6K - not cheap, but it was a 100% complete kit with no time wasted scrounging for parts (and I like to scrounge) - if your time is worth anything, this is something to consider. It was a 2-weekend job for me once the kit arrived. The TKO 600 is overbuilt for your power level, but that's not a bad thing. Customer support over the phone was outstanding as well - When I had questions, their tech was very responsive and helpful.