4L60E to 4L80E swap on a RCSB, driveshaft question
06-20-2011, 11:14 PM
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4L60E to 4L80E swap on a RCSB, driveshaft question
I can't seem to find a straight answer, some people say you can use the stock shaft, then some say you have to get a custom one made. Can someone clear this up for me?
thanks!
thanks!
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darkirish63 (10-05-2019)
06-21-2011, 10:41 AM
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heres a link of what ur looking for...
http://www.summitracing.com/parts/ST...n/?prefilter=0
http://www.summitracing.com/parts/ST...n/?prefilter=0
thanks!
06-21-2011, 03:13 PM
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I am going through the swap right now. And I have pretty much the same truck. I bought a th-400 HD slip yoke from the same company I bought all my transmission parts from. But you have to make sure you get the long 4l80 slip yoke, because the shorter
th-400 is gonna be to short and you won't have enough spline engagement with the short one. The stock 4l60 slip yoke is like 5 inches long. And the short th-400 slip yoke is 3.5 inches long. So I am sending the short slip yoke I already bought back and getting the longer 4l80 slip yoke. Then you will have to use a conversion U-joint to go from the bigger 4l80 slip yoke to the smaller 4l60 drive shaft.
th-400 is gonna be to short and you won't have enough spline engagement with the short one. The stock 4l60 slip yoke is like 5 inches long. And the short th-400 slip yoke is 3.5 inches long. So I am sending the short slip yoke I already bought back and getting the longer 4l80 slip yoke. Then you will have to use a conversion U-joint to go from the bigger 4l80 slip yoke to the smaller 4l60 drive shaft.
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06-21-2011, 05:56 PM
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after going intercooled I ran a second faster in 1/8th mile, but still slow as hell... I ran equivalent to a 14.5 second in the 1/4 mile. It has been extremely hot though. 2 weeks ago a cold front came through so I drove it out at around midnight with a temp of about 60 degrees outside, it woke up apparently because it blew my 4l60e lol
06-21-2011, 06:03 PM
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I am going through the swap right now. And I have pretty much the same truck. I bought a th-400 HD slip yoke from the same company I bought all my transmission parts from. But you have to make sure you get the long 4l80 slip yoke, because the shorter
th-400 is gonna be to short and you won't have enough spline engagement with the short one. The stock 4l60 slip yoke is like 5 inches long. And the short th-400 slip yoke is 3.5 inches long. So I am sending the short slip yoke I already bought back and getting the longer 4l80 slip yoke. Then you will have to use a conversion U-joint to go from the bigger 4l80 slip yoke to the smaller 4l60 drive shaft.
th-400 is gonna be to short and you won't have enough spline engagement with the short one. The stock 4l60 slip yoke is like 5 inches long. And the short th-400 slip yoke is 3.5 inches long. So I am sending the short slip yoke I already bought back and getting the longer 4l80 slip yoke. Then you will have to use a conversion U-joint to go from the bigger 4l80 slip yoke to the smaller 4l60 drive shaft.
