Metal knocking even after new shocks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ubtripn · 03-21-2011, 09:59 AM

So my 68 has never been lowered but the shocks were blown so when I would hit bumps it would sound like it was bottoming out somewhere around the front end suspension and the frame would be my guess. I put new shock on which helped the ride but I still get a metal knock when hitting bumps. What can cause this? I know it could be a multitude of things but I am lost. Ball joints maybe? Are there rubber pads that are supposssed to be somewhere that could be worn out? Help and thanks!

Dark Knight · 03-21-2011, 10:10 AM

Same thing happens to me. It usually does it on gravel driveways. I think it might be my inner fenders though since there's no bolts around the wheelwells. I didn't feel like putting them in because I'm going to have to pull them to replace the fender emblems. Yeah, I'm lazy.

ubtripn · 03-21-2011, 10:17 AM

MIne sounds deeper down and deepr sounding than what you are describing.

rsavage · 03-21-2011, 10:56 AM

Check your ball joints if you haven't already done so.

Beat68CST · 03-21-2011, 11:12 AM

Instead of doin my brakes on the 68 I had to help my buddy do ball joints on his Ranger.

It did the same thing, ball joints are the best bet.

brad_man_72 · 03-21-2011, 01:36 PM

ball joint, bump stop, sway bar bushings, control arm bushings....

ubtripn · 03-21-2011, 01:37 PM

Will do, and thanks.

Warrens69GMC · 03-21-2011, 01:38 PM

loose sway bar.

ubtripn · 03-21-2011, 02:42 PM

oh, ok, I will definitly check that too.

cdowns · 03-21-2011, 04:17 PM

have you greased balljoints tyrod ends etc???

stsalvage · 03-21-2011, 07:56 PM

Do you have a looseness as well when you hit a bump.the truck is all over the place.At 40 mph and above dose the truck feel loose.If so check your Rear Leaf spring bushings and if you have coil springs check your ladder bar bushings if they get lose they will bang big time

03-21-2011, 09:59 AM	#1
ubtripn Registered User Join Date: Apr 2010 Location: Boise, ID Posts: 1,280	Metal knocking even after new shocks So my 68 has never been lowered but the shocks were blown so when I would hit bumps it would sound like it was bottoming out somewhere around the front end suspension and the frame would be my guess. I put new shock on which helped the ride but I still get a metal knock when hitting bumps. What can cause this? I know it could be a multitude of things but I am lost. Ball joints maybe? Are there rubber pads that are supposssed to be somewhere that could be worn out? Help and thanks!

03-21-2011, 10:10 AM	#2
Dark Knight Registered User Join Date: Dec 2008 Location: Pleak, Texas Posts: 420	Re: Metal knocking even after new shocks Same thing happens to me. It usually does it on gravel driveways. I think it might be my inner fenders though since there's no bolts around the wheelwells. I didn't feel like putting them in because I'm going to have to pull them to replace the fender emblems. Yeah, I'm lazy. __________________ -1967 Chevrolet Fleetside LWB- 350 V8 w/thumpr cam, NV3500, 3.08 gears, A/C, PS -1983 Chevy Silverado C1500- 383 stroker, TH400 -1989 Chevy Silverado K1500 SWB- 5.3L swap, 700R4, 3.42 gears -And a '66 Ford Mustang- 200 I6, C4 trans, rust bucket "The only thing we have to fear is fear itself." -FDR (and maybe rust too) You've gotta be able to stop and steer before you can go fast!

03-21-2011, 10:17 AM	#3
ubtripn Registered User Join Date: Apr 2010 Location: Boise, ID Posts: 1,280	Re: Metal knocking even after new shocks MIne sounds deeper down and deepr sounding than what you are describing.

03-21-2011, 10:56 AM	#4
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: Metal knocking even after new shocks Check your ball joints if you haven't already done so. __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7

03-21-2011, 11:12 AM	#5
Beat68CST Registered User Join Date: Oct 2010 Location: Buckeye Arizona Posts: 470	Re: Metal knocking even after new shocks Instead of doin my brakes on the 68 I had to help my buddy do ball joints on his Ranger. It did the same thing, ball joints are the best bet.

03-21-2011, 01:36 PM	#6
brad_man_72 the boat guy Join Date: Jul 2007 Location: springfield mo Posts: 2,339	Re: Metal knocking even after new shocks ball joint, bump stop, sway bar bushings, control arm bushings....

03-21-2011, 01:37 PM	#7
ubtripn Registered User Join Date: Apr 2010 Location: Boise, ID Posts: 1,280	Re: Metal knocking even after new shocks Will do, and thanks.

03-21-2011, 01:38 PM	#8
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,612	Re: Metal knocking even after new shocks loose sway bar.

03-21-2011, 02:42 PM	#9
ubtripn Registered User Join Date: Apr 2010 Location: Boise, ID Posts: 1,280	Re: Metal knocking even after new shocks oh, ok, I will definitly check that too.

03-21-2011, 04:17 PM	#10
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Metal knocking even after new shocks have you greased balljoints tyrod ends etc??? __________________ 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

03-21-2011, 07:56 PM	#11
stsalvage Scrapper 1 Join Date: Jan 2007 Location: Riverside Calif Posts: 1,649	Re: Metal knocking even after new shocks Do you have a looseness as well when you hit a bump.the truck is all over the place.At 40 mph and above dose the truck feel loose.If so check your Rear Leaf spring bushings and if you have coil springs check your ladder bar bushings if they get lose they will bang big time



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