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Hello everyone, I have this 4L80e trans that I picked up from a buddy and Im trying to find a yoke for it. Its a newer style trans with the cooler lines spaced out but doesnt have the top bolt hole. From what Ive gathered, a 32 spline th400 yoke is what Im looking for but theres so many. Vented/Non vented, Counter bored/Non Counter bored, Long shaft/Short shaft etc. Due to the metal sleeve, I cant tell if theres an o ring near the base of the output shaft. Ive included some pictures hoping someone can lead me to a part number for the correct yoke for my application. I dont want to have to cut or drill anything. Ls3/4L80e combo into a 71 442. Also, where can I find another rubber boot? As you can see mine is pretty torn up. Thanks in advance.
Long-Full spline (not counterbored) non-vented.
Since you have that cup and o ring you technically could use a vented...but there is no need or reason to.
I plan to run a Fully Splined Output Shaft & a Fully Splined Slip Yoke regardless of what the 4L80E that I buy comes with as I will replace the output shaft with part number 24204289. Counterbored Yokes that are for use on Bolt-on Yoke Output Shafts have a tendency wobble around & cause vibrations, Especially on 4th Gen F-Bodies.
I plan to run T3-35571HP Yoke with the full spline output shaft 24204289
Long-Full spline (not counterbored) non-vented.
Since you have that cup and o ring you technically could use a vented...but there is no need or reason to.
Spicer 3-3-5551X would be fine. 1350 u joint.
Are you sure it doesnt have to be vented? There was another thread where a guy had an 80e like mine and when he tried to slide the yoke in he couldnt get it to seat. I believe he drilled a hole to make it work but I dont want to do that if I can avoid it. Is there a part number for a vented one?? Below is his video.
The guy in the video should just put the yoke on the driveshaft and install it. During normal operation the yoke travel is what 3/8"
It's not going to hurt a thing to have some air compressing inside that sleeve.
FWIW the sleeve can be removed and not used and it won't leak with a non vented yoke.
it is just an air cushion. won't hurt a thing.
I prefer non vented in the case that the o-ring inside there ever goes bad or shrinks etc etc you don't have a big leak on your hands.
If you want vented to eliminate the air cushion and you want to run that internal cup...perfectly fine also
it is just an air cushion. won't hurt a thing.
I prefer non vented in the case that the o-ring inside there ever goes bad or shrinks etc etc you don't have a big leak on your hands.
If you want vented to eliminate the air cushion and you want to run that internal cup...perfectly fine also
Ok spicer for the win. Ill be ordering one in the morning but now my concern is the image. It appears to be milled on the end. Should I be concerned about that? The eBay/Amazon image doesnt show a milled end nor does it have 208 transfer case in its description.
On the Summit Racing Web-Site... Normally there is a disclaimer next to product photos, stating that images may not correctly represent the actual product.
Sorry for any confusion OP. The Spicer 3-3-5551X doesn't have the end of the shaft milled down. Here are the correct images and info direct from Spicer. We will get our images fixed so they match that of Spicer.
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4l80e yoke 
