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Identifying the cause of a very loud squeal when hitting accelerator
https://www.slantsix.org/forum/viewtopic.php?t=68297
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Author:  gronke [ Thu Jul 24, 2025 1:02 pm ]
Post subject:  Identifying the cause of a very loud squeal when hitting accelerator

Hello! I am trying to identify the cause of a very loud squeal when I push down the accelerator on my 1964 Dart.

The engine is a V-8. The car is driven infrequently and this sound started a couple months ago and has gotten a bit worse over time.

You can see/hear in the linked video. The squeal does not occur under idle, only when hitting the gas pedal. It increases in volume if you rev the engine.

Advice appreciated!

https://jmp.sh/00S1aQM3

Author:  Reed [ Thu Jul 24, 2025 1:12 pm ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

Loose alternator belt.

Author:  eric22t [ Fri Jul 25, 2025 4:35 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

you got it reed.
definitely belt.
it could be worn enough that it is bottoming out in the v of the pulleys as well. if it is worn no matter how tight you get it, it won't have enough grip on the sides to not slip.

Author:  gronke [ Wed Jul 30, 2025 9:22 pm ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

And ... Fixed! Thanks for the encouragement and to my local friend (Chevy owner if thats ok ...) who talked me through the pretty simple adjustment.

Now onto the missing fuse ... but that's for another forum.

Author:  volaredon [ Thu Jul 31, 2025 3:59 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

320 v8? Never heard of that from any brand

Author:  Rick Covalt [ Thu Jul 31, 2025 4:44 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

302 :?: In a Dart?

Author:  Badvert65 [ Thu Jul 31, 2025 4:45 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

Especially in a Slant Six forum.

Author:  Greg Ondayko [ Thu Jul 31, 2025 4:54 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

It is Likely a 273 in the 64 dart by the video.

Author:  GTS225 [ Thu Jul 31, 2025 5:14 am ]
Post subject:  Re: Identifying the cause of a very loud squeal when hitting accelerator

I assumed he meant a 318. I do wonder where he's getting some of his info though, as it seems he's getting incorrect info.

Just sayin'.....Roger

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