clicks clunks and thumps - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sumtercleaner · 01-30-2013, 08:46 AM

Installed 5"cpp drop sprind and trac bar in the rear, along with new center support bearing and center u joint from the zone. The front was lowetered with a torch by PO. Took it for a shirt test ride and now there is a small click click click in the rear and alot of clunks and thumps feom around the trans all the to tje front. What should be my first concern? The click in the rear was present prior only if there was any weight in the bed. Thanks
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sumtercleaner · 01-30-2013, 08:54 AM

My spelling is not that bad.... darn auto correct
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brad_man_72 · 01-30-2013, 11:06 AM

I have to repair a lot of driveshafts that have been maintained by professional mechanics.
Did you mark everything, is the bolt on yoke tight, are all of the clips in the ujoints, did you replace the straps on the pinion yoke, does the pinion yoke still have the locating tabs.

I can probably assume you used house/precision ujoints.. check for excessive endplay and you may even be able to twist them by hand. Good news you can take them back (lifetime warranty LMAO) and get some spicer or neapco joints.
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sumtercleaner · 01-31-2013, 08:27 AM

Yes i made sure to mark everything to make sure they went back together clocked the same way. Tabs are there and joint sits in good and all feel ok. The clicking i hear was there previously but only when there was something in the bed. It seems to go away when im moving faster than "driveway" speed. I trimmed the front bump stops and things are a little better but im guessing the front geometry along with stock placement and length shocks are part of the problem
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geezer#99 · 01-31-2013, 10:11 AM

What's your pinion angle?
Sounds like u-joints are cracking.

Scott>72-GMC · 01-31-2013, 12:23 PM

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67ChevyRedneck · 01-31-2013, 01:24 PM

Look for clearance around the driveshaft... it may now be bumping into your exhaust or a crossmember. The exhaust could sway a bit gently tapping the driveshaft or it could be hitting elsewhere now that it is lowered.
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cdowns · 01-31-2013, 01:26 PM

on some not all cases of a 4-5 inch drop spring the tranny yoke will bottom out inside the tailshaft// destroys tranny and driveshaft

67ChevyRedneck · 01-31-2013, 01:30 PM

Thats actually what i was thinking his noise was too. I just added exhaust as a rule out too.
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sumtercleaner · 01-31-2013, 04:05 PM

Hadnt thought about that. Ill check that yoke before it see any more miles thanks
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01-30-2013, 08:46 AM	#1
sumtercleaner Registered User Join Date: Oct 2012 Location: Sumter SC Posts: 76	clicks clunks and thumps Installed 5"cpp drop sprind and trac bar in the rear, along with new center support bearing and center u joint from the zone. The front was lowetered with a torch by PO. Took it for a shirt test ride and now there is a small click click click in the rear and alot of clunks and thumps feom around the trans all the to tje front. What should be my first concern? The click in the rear was present prior only if there was any weight in the bed. Thanks Posted via Mobile Device

01-30-2013, 08:54 AM	#2
sumtercleaner Registered User Join Date: Oct 2012 Location: Sumter SC Posts: 76	Re: clicks clunks and thumps My spelling is not that bad.... darn auto correct Posted via Mobile Device

01-30-2013, 11:06 AM	#3
brad_man_72 the boat guy Join Date: Jul 2007 Location: springfield mo Posts: 2,339	Re: clicks clunks and thumps I have to repair a lot of driveshafts that have been maintained by professional mechanics. Did you mark everything, is the bolt on yoke tight, are all of the clips in the ujoints, did you replace the straps on the pinion yoke, does the pinion yoke still have the locating tabs. I can probably assume you used house/precision ujoints.. check for excessive endplay and you may even be able to twist them by hand. Good news you can take them back (lifetime warranty LMAO) and get some spicer or neapco joints. Posted via Mobile Device Last edited by brad_man_72; 01-30-2013 at 11:08 AM. Reason: precision is junk

01-31-2013, 08:27 AM	#4
sumtercleaner Registered User Join Date: Oct 2012 Location: Sumter SC Posts: 76	Re: clicks clunks and thumps Yes i made sure to mark everything to make sure they went back together clocked the same way. Tabs are there and joint sits in good and all feel ok. The clicking i hear was there previously but only when there was something in the bed. It seems to go away when im moving faster than "driveway" speed. I trimmed the front bump stops and things are a little better but im guessing the front geometry along with stock placement and length shocks are part of the problem Posted via Mobile Device

01-31-2013, 10:11 AM	#5
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,516	Re: clicks clunks and thumps What's your pinion angle? Sounds like u-joints are cracking.

01-31-2013, 12:23 PM	#6
Scott>72-GMC Registered User Join Date: Jan 2013 Location: New providence ia Posts: 1,018	Re: clicks clunks and thumps Posted via Mobile Device Posted via Mobile Device Posted via Mobile Device Attached Images

01-31-2013, 01:24 PM	#7
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: clicks clunks and thumps Look for clearance around the driveshaft... it may now be bumping into your exhaust or a crossmember. The exhaust could sway a bit gently tapping the driveshaft or it could be hitting elsewhere now that it is lowered. Posted via Mobile Device __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

01-31-2013, 01:26 PM	#8
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: clicks clunks and thumps on some not all cases of a 4-5 inch drop spring the tranny yoke will bottom out inside the tailshaft// destroys tranny and driveshaft __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

01-31-2013, 01:30 PM	#9
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: clicks clunks and thumps Thats actually what i was thinking his noise was too. I just added exhaust as a rule out too. Posted via Mobile Device __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

01-31-2013, 04:05 PM	#10
sumtercleaner Registered User Join Date: Oct 2012 Location: Sumter SC Posts: 76	Re: clicks clunks and thumps Hadnt thought about that. Ill check that yoke before it see any more miles thanks Posted via Mobile Device



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