Built Driveshaft
03-06-2022, 03:53 PM
#1
Teching In
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Join Date: Oct 2019
Location: Richmond, Virginia
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Built Driveshaft
I tried to find my answer before posting a question and didn't find what I was looking for.
Recommendations on built driveshafts?
Currently going in a stock 07 Classic ECSB GMC 1500, but will not be stock for much longer.
Recommendations on built driveshafts?
Currently going in a stock 07 Classic ECSB GMC 1500, but will not be stock for much longer.
03-07-2022, 05:11 AM
#5
On The Tree
Two things, depending on where you live in the country some folks can recommend to you a shop. Speed (top speed) is where the stock one's break apart. I have seen them at local tracks by me pop at around 110mph+. So if you plan on trapping the 1/4-mile that high and or feel frisky on the highway doing a pull you might want to get a better than stock shaft.
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swathdiver (03-08-2022)
03-07-2022, 05:40 AM
#6
TECH Fanatic
Yea, it's all about critical speed. You can blow one up stock if you remove speed limiter.
03-07-2022, 11:05 AM
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I know it may not necessarily be needed for the mods but I am trying to eliminate as many weak links as I can. Transmission swap will be in its future as well. Most of its use other than driving on the street will be driving on the beach to fish.
I'm open to any suggestions as well for do this but stay away from that.
I'm open to any suggestions as well for do this but stay away from that.
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03-07-2022, 05:27 PM
#8
I would guess you have a 5.3L, unless you plan on (okay 110+)/ 15mph+ over the stock limiter, its not a weak point.
It sounds like you know the transmission is one when towing heavy. If you have an upgraded trans or 4L80 swap planned, then that should solve it.
Other weak points: the plastic heater hose coupler at the firewall is a known cheap/weak point. Might want to read up on the oil pick up tube o-ring. If your bolt-ons include the manifolds, those manifold bolts are known to break.
It sounds like you know the transmission is one when towing heavy. If you have an upgraded trans or 4L80 swap planned, then that should solve it.
Other weak points: the plastic heater hose coupler at the firewall is a known cheap/weak point. Might want to read up on the oil pick up tube o-ring. If your bolt-ons include the manifolds, those manifold bolts are known to break.
03-08-2022, 08:01 AM
#9
I’m currently looking into upgrading my ecsb Silverado driveshaft also. It seems with info in this thread that the rpm’s of driveshaft is the limit. I’m not sure how much torque applied would become a serious factor though. Not to hijack this thread but my build is with a turbo/auto and leaving the starting line is not that violent. For the rpms of the driveshaft, rear gears would play a roll in how fast the driveshaft is turning. I’m running stock 3.73 gears and my top speed would be 130-140. Any faster and I’m sure the track would be having other concerns about stockish vehicles trapping speeds that high. I’m on the fence with an upgrade. The stock driveshaft has been rebalanced with new u joints and carrier. From what I’ve read elsewhere, 2 piece driveshafts can handle the rpm’s better because their easier to balance, rather than one big pipe spinning high rpm’s.
