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07-27-2017, 08:58 PM | #1 |
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Question about drive shaft
Im getting my 5.3/4L60 swap from my old 74 c10 swapped into my 83 c10. My buddy tried fitting the driveshaft that we had made for the 74 but turns out its too long. The engine n tranny are sitting a bit further back in the engine bay of the 83 so thats one reason why.
However the 74 was lowered when we measured to have the driveshaft made n the 83 isnt lowered yet. So my question is does it make a difference if the truck is lowered or not when measuring for a driveshaft? Im taking it to get it shortened tomorrow n also have to swap out the u joint since the 83 has a 10 bolt rear end. Forgot to mention that the yoke is all the way inside the transmission
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) Last edited by ivorton74; 07-27-2017 at 10:03 PM. |
07-27-2017, 09:44 PM | #2 |
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Re: Question about drive shaft
lowering a vehicle can affect driveshaft length but it is very minimal. ..not enough to need changed as long as you have adequate yoke slip at the trans end
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07-28-2017, 09:58 AM | #3 |
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Re: Question about drive shaft
Sounds like the truck is still in the air?
If that's the case, get it on the ground or have the axle sitting on jack stands to get a more accurate measurement. |
07-28-2017, 11:21 PM | #4 |
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Re: Question about drive shaft
Took it to a machine shop n had it shortened by 4 inches...im praying to God it fits
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) |
07-28-2017, 11:35 PM | #5 |
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Re: Question about drive shaft
you didn't measure?...
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07-29-2017, 12:07 AM | #6 | |
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Re: Question about drive shaft
Quote:
A machine shop, or driveshaft shop? Clint
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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07-29-2017, 01:03 AM | #7 |
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Re: Question about drive shaft
Yeah its actually a driveshaft shop lol...took it to Midwest Welding and Drive in Fargo ND.
@mongo...my buddy did some measurements yesterday and decided to have shortened by that much. The guy at the driveshaft shop told me that the driveshaft was too way long for a steel driveshaft and he's surprised it didnt snap in half already. I told him It was custom made for my old truck...he said they should have made it from aluminum instead. Anyone has any idea what he's talking about? I dont know anything about this stuff. I know some of these truck came with 2 piece driveshafts though.
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) Last edited by ivorton74; 07-29-2017 at 01:13 AM. |
07-29-2017, 01:53 AM | #8 |
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Re: Question about drive shaft
haha..I thought you just guessed at how much to cut...
is your truck lwb or swb? lwb should be 2 piece.. new trucks do have aluminum driveshafts..I like steel though.. the 2015 camaro ss I got my ls3 out of has a 2 piece driveshaft..go figure...whole thing isn't 5 ft long...and its steel |
07-29-2017, 08:36 AM | #9 |
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Re: Question about drive shaft
My 74 and 83 are both long bed trucks and they both had one piece driveshafts. When we did the first swap the driveshaft was actually too short...so we had to get one made.
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) |
07-29-2017, 09:23 AM | #10 |
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Re: Question about drive shaft
my 81 lwb has a 2 piece d-shaft. .I made a swb out of it..
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07-29-2017, 10:05 AM | #11 |
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Re: Question about drive shaft
Research driveshaft critical speed... it can only be so long at a certain diameter at a certain rpm unroll it turns into a wadded noodle. Aluminum can go bigger diameter and thus longer. Just like all bmws, and the camaro, 2 short driveshaft instead of 1 pc means higher critical speed, smaller tube..
Clint
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
07-29-2017, 12:34 PM | #12 |
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Re: Question about drive shaft
Yup..he did mention something about 3500rpm and the diameter of the driveshaft. My e39 bmw does have 2 short ones if i not mistaking
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) |
07-29-2017, 12:46 PM | #13 |
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Re: Question about drive shaft
if your like me and your right foot is bigger than your left one..I'd listen to your driveshaft man...you sure don't want it coming loose on ya when you hammer it..
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07-29-2017, 11:19 PM | #14 |
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Re: Question about drive shaft
Well the driveshaft fit without any problems. Took it on its first drive and entered a burnout contest in it. Already not liking my 2.73 gears...need lower gears like 3.42s or something
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1983 C10 Silverado 5.3 swap 1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122 2001 BMW 530i 5 speed 2019 Nissan Titan SV Midnight 1979 Datsun 210 4 door 1980 Datsun 120y(back home in Trinidad) |
10-27-2017, 12:04 AM | #15 |
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Re: Question about drive shaft
Ran into same problem with my '72. The factory two piece was 4" too long, had a TH400 yoke, shot UJoints, and suspect carrier bearing. Ended up being cheaper to build a one piece aluminum shaft rather than modifying/rebuilding the two piece.
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