Need new drive-shaft...they said not possible.
08-11-2007, 11:18 AM
#31
Originally Posted by ranwalk
What crossmember did you use for the 80e swap? Did it maybe raise up the tailshaft too high?
It is hard to tell from the pics but I believe Randy may be on to something. The pic of the modified cross member seems to be 'built up' a bit from the stock mounting location.
08-13-2007, 01:51 PM
#32
Originally Posted by TurboBerserker
I just looked into this last month Spoolin.
1) no one will make the CF driveshaft as long as you need it anyway
There is one company that has made one up to 104" but the RPM limit is like 3200...
2) The 2 piece DS is a simple fix. I used Dynotech and fabbed the mount for it. No pics, and the truck isn't here, but I did it all with the bed installed.
1) no one will make the CF driveshaft as long as you need it anyway
There is one company that has made one up to 104" but the RPM limit is like 3200...2) The 2 piece DS is a simple fix. I used Dynotech and fabbed the mount for it. No pics, and the truck isn't here, but I did it all with the bed installed.
08-13-2007, 04:18 PM
#34
Originally Posted by Spoolin
Erik did you do a conversion from the 4L65E to the 4L80E? Also from what I remember the SS's were originally two piece drive shafts to begin with right? Where did you place your front mount? Is your frame the same as mine where the front nearest cross member is 15 inches from the tranny tail shaft? I think since I have a single piece and the frame crossmembers seem to be at different locations it's gonna prove really difficult for me to be able to convert to a 2 piece DS.
The mount for the 2 piece is welded on to the "hump" cross member close to the bed / cab junction (where the stock one goes) -- here's a link to some pics for the stock location: https://www.performancetrucks.net/fo...d.php?t=396083 The first picture is looking back from the tail shaft. You can see the front edge of the gas tank on the right hand side.
Turns out, that's almost the perfect place according to the DS engineer. He said you wanted it about 2/5 of the way back on the over all length. Mine was 85 3/8" over all and I put the bolt center line for the carrier bearing at 37" from the tail shaft, leaving the second shaft at 48". The ideal according to the 2.5 rule would be 34 / 51, but dynotech said it was close enough so I ran with it.
08-13-2007, 04:53 PM
#35
Well...Looks that the crossmember that was used is the same one that is beneath my fuel pump, ie this one...
But I have a feeling that since I'm a CC and the both of you are EC that my wheelbase (wheel to wheel) is longer and that crossmember won't give me the correct 2/5 or 40/60 that is ideal. Someone correct me if I'm wrong and the wheelbase is in fact the same.
But I have a feeling that since I'm a CC and the both of you are EC that my wheelbase (wheel to wheel) is longer and that crossmember won't give me the correct 2/5 or 40/60 that is ideal. Someone correct me if I'm wrong and the wheelbase is in fact the same.
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