manual <acronym title="transmission">trans</acronym> clunking - Ford Mustang Forum
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post #1 of 6 (permalink) Old 09-08-2009 Thread Starter
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mustang920's Avatar
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manual trans clunking

Have an 06 mustang gt, I just noticed that during (most) downshift i can hear a quiet clunking sound when downshifting. Yes I am downshifting at the appropriate RPM. Is there suppose to be a quiet clunking sound during downshift? First manual.. Thanks.

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post #2 of 6 (permalink) Old 09-08-2009
clentonz's Avatar
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IMO, the mustang transmission makes some noise/clunks/etc. that's just how they are they are. You will hear a little noise, but if it sounds out of the ordinary of the usual clunks/noises, than you might have a problem. I know this wasn't very helpful at all...but mine makes a 'clunk' sound when I downshift sometimes

Take care,

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post #3 of 6 (permalink) Old 09-08-2009 Thread Starter
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yea it is a little noise, but..idk if its a good noise or not lol. I'm assuming it is a "good" clunk then lol
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post #4 of 6 (permalink) Old 09-08-2009
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I've read that alot of the clunk is actually caused by the 2-piece driveshaft. I haven't had the $$$ to put in a 1-piece yet in mine to confirm this though.

300 stroker @ 11:1 compression, FRPP Stage 2 heads, 127300 cams, 4r70W, Kooks 1 3/4" lt's with 3" H mid-pipe, FRPP stinger mufflers, B&M ratchet shifter, UPR LCA's, JPC race UCA. E-Force TVS. Engine built by Everett's specialty repair, tuned by Manuel @ 9.98 @ 136.55 1.39 60'
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post #5 of 6 (permalink) Old 09-08-2009
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yeah i believe it is the 2 piece shaft. Mine was doing the same until I put in a 1 piece aluminum with real man joints. also when i replaced my clutch and fly wheel and put it all back together i guess i forgot to put locktight on the bolt that secures th tranny to the cross member and it eventually shook itself loose and out then it made a whole lot more movement. oops, but now the problem is solved. You should be fine though.
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post #6 of 6 (permalink) Old 09-08-2009
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That noise is very normal.

1965 Mustang Coupe
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