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  #1  
Old 05-21-2015, 10:42 PM
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V3 Long travel transmission question

Hello, I'm in the process of getting everything together for the V3 plans I purchased. I was looking at transmissions and received some info on here before, but I had an idea I wanted to toss out and see what everyone thought.

Has anyone here used a 4T80E transmission out of a FWD chevy/olds/caddy for a mid engine setup in a long travel buggy? I'm planning on running a 5.3 LS4 engine and from what I've read it will bolt right up. the only difference is that it will be rotated 90* from it's normal position. I also read that they are pretty stout and with a build they can handle a beating. I'm not sure how the CVs will work but if I need to modify something I can probably make it. I run CNCs at work and I shouldn't have any problems cranking out an adapter if needed. If I can make this work it would be much cheaper than the Fortin or Mendeola options.

thanks for any info

Charles
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Old 05-22-2015, 07:40 AM
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Rotated 90 from its normal position?????
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Old 05-22-2015, 09:20 AM
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Its tranverse engine right vs the older Toronado configuration.
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Old 05-22-2015, 11:00 AM
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A 180 turn I get but a 90?
Drive now running F2B?

E
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Old 05-22-2015, 11:29 AM
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Normally a V8 would sit front to back in a long travel. If I run the 4T80 transaxle I have to rotate the engine 90* so the axles will go out the sides. If it was rotated 180* the axles would be running front to back.
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Old 05-22-2015, 11:31 AM
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Quote:
Originally Posted by CarterKraft View Post
Its tranverse engine right vs the older Toronado configuration.
Yeah it's getting pulled from the Cadillac STS/DTS cars that had the FWD northstar power plants. You can grab one from a junk yard for $250.
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Old 05-22-2015, 01:38 PM
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Originally Posted by chickenwings_85 View Post
Normally a V8 would sit front to back in a long travel. If I run the 4T80 transaxle I have to rotate the engine 90* so the axles will go out the sides. If it was rotated 180* the axles would be running front to back.
Lack of sleep... I was just not getting it
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Old 05-22-2015, 01:44 PM
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Ok.
Most OEM transaxles for FWD Cars are really wide at the Inner or DOJ. This to eliminate plunge and thus slip joints on the drive-shafts.
Comparatively...
That will make the track width of your suspension really wide or you will have short wheel travel before you take the CV's our of their operating range.
AND I could be completely wrong!

E
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Old 05-22-2015, 05:29 PM
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Originally Posted by entropy View Post
Ok.
Most OEM transaxles for FWD Cars are really wide at the Inner or DOJ. This to eliminate plunge and thus slip joints on the drive-shafts.
Comparatively...
That will make the track width of your suspension really wide or you will have short wheel travel before you take the CV's our of their operating range.
AND I could be completely wrong!

E
Ok, thanks for the response.

I may just buy one and see if I can do a mock up. They are super cheap. I wonder if I could get some wheels with a large offset to reduce the rear end width. I believe the 4T60 is not as wide but would need to be built as well. I'm not sure if the 5.3 will bolt to that transaxle though.
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Old 05-23-2015, 10:46 AM
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Originally Posted by chickenwings_85 View Post
Ok, thanks for the response.

I may just buy one and see if I can do a mock up. They are super cheap. I wonder if I could get some wheels with a large offset to reduce the rear end width. I believe the 4T60 is not as wide but would need to be built as well. I'm not sure if the 5.3 will bolt to that transaxle though.
If you design the suspension correctly there are wheels that could have enough offset to give you a few inches per side but verify your tires will fit the rims first.
E
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Old 05-23-2015, 12:28 PM
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If you design the suspension correctly there are wheels that could have enough offset to give you a few inches per side but verify your tires will fit the rims first.
E
I should also say to check that the wheels are rated for your tires.
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Old 05-24-2015, 02:02 AM
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I should also say to check that the wheels are rated for your tires.
Ok, I know I wont make up all of the travel that is lost but if I can get it pretty close I'll settle for that. Thanks for the input, I'm new to all of this stuff so it really helps.
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