C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Thunk-tastic! (Insight needed)

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Old Jun 27, 2007 | 10:11 PM
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TorchRedRob's Avatar
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Default Thunk-tastic! (Insight needed)

Just wanted to get some insight about a problem I'll be looking at this weekend. The front end has just started to make a thunk sound. Only happens over abrupt changes in pavement height (higher to lower), big bumps, or occaisionally on quick throttle application while cruising.

I have already checked the stuff I can see without getting under it: LCA bolts, UCA bolts, ball joints, shocks, spring retainers, tie rods, anti-roll bars.

Once I can find the time to put it on stands, I'll take a look at motor mounts, drivetrain components, and other suspension components.

Any thoughts about other stuff I should check or what might be a likely culprit?

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Old Jun 27, 2007 | 11:11 PM
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How old are your shocks?
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Old Jun 28, 2007 | 10:50 AM
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Originally Posted by chucks88
How old are your shocks?
to my knowledge they are probably the originals, so about 12 years.
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Old Jun 28, 2007 | 11:12 AM
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St. Jude Donor '08-'09-'10-'11
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Check the spring also.
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