LS1TECH - Camaro and Firebird Forum Discussion - What's that sound? Exhaust slapping.

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casias

May 30, 2016 07:48 AM

What's that sound? Exhaust slapping.

Please help. I have a 6.0 LY6 truck engine with LS9 cam in a Dodge Dakota. Exhaust is stock cast manifolds with 2.5 tubing and 2.5 Magnaflow mufflers ending with turndowns just ahead of the rear axle.

The tubing only has one 45 degree bend on each side, about 18" straight pipe into the muffler.

What causes exhaust slapping? It gets louder at WOT. Any info would be appreciated?

Video:

https://www.youtube.com/watch?v=fnaO...ature=youtu.be

xdanny510x

Jun 1, 2016 09:43 PM

Is ur exhaust hittin the floor pan?

casias

Jun 2, 2016 02:46 AM

Quote:

Originally Posted by xdanny510x (Post 19281500)

Is ur exhaust hittin the floor pan?

No. Plenty of room all the way around and secured with HD hangers.

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