Nice Work and Documentation 
also how much heavier is it
4L80E is in
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,147
Likes: 302
From: Timra, Sweden
4L80E is in
Pictures here:
http://www.joby.se/corvette/mods/2004-12-26_4l80/
No cutting into the fiberglass needed. I only made a small hole for the TCI box cable.
Now I have to get a new driveshaft and build a new exhaust.
http://www.joby.se/corvette/mods/2004-12-26_4l80/
No cutting into the fiberglass needed. I only made a small hole for the TCI box cable.
Now I have to get a new driveshaft and build a new exhaust.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 32
From: The Top of Utah
That looks nice Jonas. Great pictures. I like the way you boxed the end of the "C" beam to bolt to the back of the trans. One concern. It appears that all the "C" beam to trans bolts are in a single Vertical plane. Are there any bolts in the horizontal plane? I would be afraid that any forces that would be applied, would be more to the bolts than actually transfered to the trans. That's a nice clean installation. But coming from you, I'd expect no less.
RACE ON!!!
RACE ON!!!
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Dang! That looks great. I may have to try that next winter, depending on how mine holds up this summer.
How are you doing the electronics? What about the speedo plug for the ECM? Any major exhaust changes that you can see?
How are you doing the electronics? What about the speedo plug for the ECM? Any major exhaust changes that you can see?
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,147
Likes: 302
From: Timra, Sweden
I got the 4L80E and TCI controller for a total of about $1000.
I have done nothing to the tranny, and it is a low mileage from a chevy 3500 HD chassis cab. That is the reson for the odd tail housing. The bolt holes I used to mount the C-beam are originally for an extra parking brake.
The C-Beam is bolted to the tail housing using 6 bolts.
You can see it in these pictures:
( Click to enlarge )
I have done nothing to the tranny, and it is a low mileage from a chevy 3500 HD chassis cab. That is the reson for the odd tail housing. The bolt holes I used to mount the C-beam are originally for an extra parking brake.
The C-Beam is bolted to the tail housing using 6 bolts.
You can see it in these pictures:
( Click to enlarge )
Last edited by JoBy; May 12, 2005 at 12:56 PM.
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Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,147
Likes: 302
From: Timra, Sweden
Originally Posted by CFI-EFI
It appears that all the "C" beam to trans bolts are in a single Vertical plane. Are there any bolts in the horizontal plane? I would be afraid that any forces that would be applied, would be more to the bolts than actually transfered to the trans.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 32
From: The Top of Utah
Originally Posted by JoBy
I get your point, but I dont think that it is a big issue. On the th700r4 the tail housing is bolted to the tranny using four smaller bolts, all in a single vertical plane. It is supported by the output shaft too, but still.
The 4 bolts holding the tailshaft housing to the case on the 700R4, clamp the housing to the case, with a flat mating surface between the two and a pilot (I think). The forces on those bolts are in tension, parallel to their length. My concern was that the forces on your bolts are more of a rocking nature and with more leverage, with less of a surface area to prevent movement. You seem to realize what I'm talking about, so my mission is accomplished. It was not my intention to criticize, but merely point out what I saw. Regardless, I hope you find it trouble free.
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,147
Likes: 302
From: Timra, Sweden
If you look closley on the tail housing there is a machined surface around the seal. I macined a hole in the 10mm aluminum with a lathe and it is a tight fit. There are no shearing forces on the bolts.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,147
Likes: 302
From: Timra, Sweden
Originally Posted by mn_vette
Where did you get the tranny and the controller for $1K? Did that include the TC and the flexplate as well? or were those seperate?
The TCI contoller was also used and I bought that from someone else for about $300.
I bought the flexplate and yoke new from Summit Racing.
Racer
Joined: Feb 2005
Posts: 387
Likes: 1
Originally Posted by bogus
That is impressive. Very impressive.
I hope the c-beam is properly aligned, tho... if not, it can set off a vibration in the drivetrain.
I hope the c-beam is properly aligned, tho... if not, it can set off a vibration in the drivetrain.
Is there anything I should be watching out for as far as alignment of the c beam? Is there a pinion angle I should have or anything?
thanks!