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03-27-2016, 12:53 PM
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#1 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Will a 4L80E require shortening a driveshaft?
Anyone happen to know if there's enough room in the driveshafts and carrier bearing to take up the additional length of the 4L80E or will I wind up shortening a driveshaft?
I have the two-piece shaft, it's replacing the TH400. I can speculate as well as the next guy, just curious if anyone's done it before.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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03-27-2016, 03:11 PM
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#2 |
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Registered User
 
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: Will a 4L80E require shortening a driveshaft?
yes
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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03-27-2016, 03:38 PM
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#3 |
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Registered User
Join Date: Feb 2016
Location: Louisiana
Posts: 92
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Re: Will a 4L80E require shortening a driveshaft?
Going with the 4l80e has a longer tail shaft and slightly longer body. I was told I could go with a 1 piece shaft when I do the swap and get rid of the old drive line and bearing.
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03-27-2016, 04:06 PM
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#4 |
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Registered User
Join Date: Oct 2007
Location: Sammamish, WA
Posts: 2,115
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Re: Will a 4L80E require shortening a driveshaft?
Dave, I have a 4x4 LWB one piece drive line you can use to shorten if you go that way.
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03-27-2016, 04:25 PM
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#5 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Will a 4L80E require shortening a driveshaft?
I had mine shortened for the 2 wheel drive LWB truck. Ended up having them put in a 1 piece due to their screw up. They cut the 2 peice to short.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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03-27-2016, 05:03 PM
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#6 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Will a 4L80E require shortening a driveshaft?
Hmmm... mine's a Longhorn, so it's (wait for it) longer. I wonder if I could still get away with a one-piece?
Why did they use a two-piece anyway? Harmonics, or ground clearance, or what was the impetus I wonder?
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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03-27-2016, 05:51 PM
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#7 | |
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Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: Will a 4L80E require shortening a driveshaft?
Quote:
__________________
68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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03-27-2016, 06:07 PM
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#8 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Will a 4L80E require shortening a driveshaft?
My LWB truck came with it. I had the one in the truck with the 700-r4 shortened. I bought another one for 20 bucks for a spare. Both where 2 piece shafts. I never had it cut though so when I did the 4l80e swap I had them cut it down. They screwed it up. They cut before they measured it twice! I really don't know what happened only they paid for it.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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