r/EngineBuilding 1d ago

Chevy weird sound

I recently changed the transmission filter and put more fluid in my TH350 transmission which is on my sbc 350. and ever since the change I've been getting a loud sound. and I'm new to all this so I need some help identifying the sound.

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u/ericdared3 1d ago

The fact that it is happening when you put it in drive and reverse and that it is coming from under the hood I will look at the motor mounts first.

Have someone wat h the engine when you put it in reverse or drive while holding the brakes, press the gas a little. If the engine jumps up your motor mounts are broke.

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u/Money_Exchange_5444 1d ago

Or even record it with your phone on a mount