L98 ZF 6 speed conversion
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
I did a ZF changeout on a ZR1 some years ago, and it is MUCH larger than any trans tunnel in a C3 and the frame will need modified on that tail shaft support also.....with the interior crap needing extensive mods to accept the large tunnel, your seats will have to be replaced.....
FUGGETABOUTIT!!!!!
FUGGETABOUTIT!!!!!
Team Owner
Joined: Apr 2002
Posts: 26,563
Likes: 29
From: Northridge California
St. Jude Donor '14
I did a ZF changeout on a ZR1 some years ago, and it is MUCH larger than any trans tunnel in a C3 and the frame will need modified on that tail shaft support also.....with the interior crap needing extensive mods to accept the large tunnel, your seats will have to be replaced.....
FUGGETABOUTIT!!!!!
FUGGETABOUTIT!!!!!
Sounds like a monumental task then...
Thread Starter
Racer
Joined: Oct 2001
Posts: 420
Likes: 11
From: tuttle ok
I did a ZF changeout on a ZR1 some years ago, and it is MUCH larger than any trans tunnel in a C3 and the frame will need modified on that tail shaft support also.....with the interior crap needing extensive mods to accept the large tunnel, your seats will have to be replaced.....
FUGGETABOUTIT!!!!!
FUGGETABOUTIT!!!!!
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
It does sound like it could be a huge task. I have cut the floor pans in my 79 and lowered them to fit C5 seats, so I am not too concerned about modifying the tunnel. Looks like I have some measuring and contemplating to do. As far as the crossmember that will be another challenge in itself. For me figuring out if and how is a big part of the fun! Thanks for the input. If I decide to tackle the project I will post how it goes!
If not then would you consider a T56 Magnum ?
You can buy most items to fit in a 79. You still need to make a hole
for the shifter, add electrical connections, you can use the original speedo,
Between American powertrain, bowtie overdrive, hurst driveline, sst you will find every part you need to install a T56. The only thing is the cost.
Is your car a auto or manual ?
Thread Starter
Racer
Joined: Oct 2001
Posts: 420
Likes: 11
From: tuttle ok
Is cost an issue?
If not then would you consider a T56 Magnum ?
You can buy most items to fit in a 79. You still need to make a hole
for the shifter, add electrical connections, you can use the original speedo,
Between American powertrain, bowtie overdrive, hurst driveline, sst you will find every part you need to install a T56. The only thing is the cost.
Is your car a auto or manual ?
If not then would you consider a T56 Magnum ?
You can buy most items to fit in a 79. You still need to make a hole
for the shifter, add electrical connections, you can use the original speedo,
Between American powertrain, bowtie overdrive, hurst driveline, sst you will find every part you need to install a T56. The only thing is the cost.
Is your car a auto or manual ?
. The motor in the car has gotten tired and I came across a package deal on the L98 and 6 speed. If the transmission looks to be a huge problem then I may just put the motor in and continue with an auto for now.
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Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
no support for the zf6 anymore, black tag is stronger german built, blue US built takes less beating,
the c4 guys are getting desperate in finding the dual mass flywheel, which they don't make anymore... forget it
do something else
the c4 guys are getting desperate in finding the dual mass flywheel, which they don't make anymore... forget it
do something else
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
The car has a 200-4R in it right now. Also I have installed a tuned port on the original 350. As far as money being an issue. ALWAYS . The motor in the car has gotten tired and I came across a package deal on the L98 and 6 speed. If the transmission looks to be a huge problem then I may just put the motor in and continue with an auto for now.
. The motor in the car has gotten tired and I came across a package deal on the L98 and 6 speed. If the transmission looks to be a huge problem then I may just put the motor in and continue with an auto for now.https://www.corvetteforum.com/forums...-corvette.html
Thread Starter
Racer
Joined: Oct 2001
Posts: 420
Likes: 11
From: tuttle ok
Go with the motor and wait until you kill the auto. It takes a lot of planning to install a 6-speed. Here was my battle.
https://www.corvetteforum.com/forums...-corvette.html
https://www.corvetteforum.com/forums...-corvette.html
