4l80e drive shaft length issue
4l80e drive shaft length issue What's up guys, I just finished my swap from t56 to 4l80e but now have an issue with my drive shaft.. I ordered a slip yoke from strange & put it on. Problem is that it only slides in a 1 1/2'' in the tail shaft after installing the bolts on the other end of the shaft. the slip yoke is about 4'' long but only goes in 1 1/2 cause the shaft is to short.. Anyone had this drive shaft issue?
Sounds like you'll need one that is cut or you dont have the yoke in all the way. It should go in further than 1.5" into the tail shaft. Maybe its not snapped over the O-Ring on the shaft?
It'll slide all the way in but then it has to slide out to reach the rear end yoke.. goes in all 4'' then slides out 2 1/2'' to be able to tighten up at the rearend
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
You will need a shorter driveshaft. I went from a T56 to a 4L80 with a 9" in my car. The 4L80 will require 3/4" - 1" shorter driveshaft than the T56.
My specs from ordering driveshafts (straight from PST invoices):
T56 Driveshaft: 45 1/4" seal to center
4L80 Driveshaft: 44 1/2" seal to center
I thought about having my original driveshaft shortened but ended up just buying a new one. I don't think it was worth the hassle of shipping it back to PST and having them shorten it. Ordered directly through PST. I worked with Cliff on the phone and he had great customer support. Spent plenty of time answering all of my questions.
I would suggest taking your own measurements though.
My specs from ordering driveshafts (straight from PST invoices):
T56 Driveshaft: 45 1/4" seal to center
4L80 Driveshaft: 44 1/2" seal to center
I thought about having my original driveshaft shortened but ended up just buying a new one. I don't think it was worth the hassle of shipping it back to PST and having them shorten it. Ordered directly through PST. I worked with Cliff on the phone and he had great customer support. Spent plenty of time answering all of my questions.
I would suggest taking your own measurements though.
When I swapped to a 9" with the 60e I reused the stock ds, then when I swapped to an 80e I needed a shorter one so I had a 3.5" steel one made.. swapped to powerglide and needed a longer one so I had to get another one made, if it doesn't fit right then it doesn't fit, need to have one made. when measuring you need to slip the yolk all the way in the tranny then measure from the centerline of the u-joint to the centerline of the rear of the rear u-joint then get one made
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
That amount sounds likely if the car is lifted by a hoist with the wheels hanging, but if the car is on rear jackstands under the differential tubes, the suspension is compresses and that amount could be much less.
Obviously you never want it to bottom out in the trans during suspension travel.
With suspension compressed 3/4-1".. so if you ever bottom the car out you don't ram the yolk into the trans. Better safe than sorry, 1" isn't a lot and still have plenty of spline in the tailhousing
well this 1 slides out 2 1/2".. No good then.. Is it even worth taking my shaft to a shop to lengthen it or is it not worth it? shop around here charges me $150.. I have a Spohn Extreme-Duty Driveshaft that I bought from someone here