Strange Slam from beneath the car

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Jul 14, 2015 | 09:03 AM

simplesimpa

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Strange Slam from beneath the car

So , I was out driving the other day, used the kickdown function, and then: BAM!!!

Felt like I was gonna brake my spine. The "sound", or slam or w/e felt like something massive that hit the car just beneath/ in the middle of the front seats. Felt like the car was going to seperate into two pieces.

What was this? at first i thought I just hit an invisible roadbump or something but then it happened two or three times more. Only when I really hit the throttle..

Regars Simon

IROC 1990

Jul 14, 2015 | 09:41 AM

Base91

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From: Georgetown TX

Car: Base 91 'bird

Engine: 3.1 v6

Transmission: 4L60

Axle/Gears: 9-bolt 3.27 & PBR

Re: Strange Slam from beneath the car

most likely the trans rubber mount is done for. Not hard or expensive to replace.

Jul 14, 2015 | 03:08 PM

JamesC

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From: Lawrence, KS

Car: Met. Silver 85 IROC/Sold

Engine: 350 HO Deluxe (350ci/330hp)

Transmission: T-5 (Non-WC)

Axle/Gears: Limited Slip 3.23's

Re: Strange Slam from beneath the car

Quote:

Originally Posted by Base91

most likely the trans rubber mount is done for. Not hard or expensive to replace.

X2. The following may provide some food for thought:

https://www.thirdgen.org/forums/tran...ison-pics.html

JamesC

Jul 14, 2015 | 03:29 PM

-=Z28=-

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Posts: 1,072

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From: Minnesota

Car: 84 Z28

Engine: 383 Stroker

Transmission: 700R4

Axle/Gears: 3.73

Re: Strange Slam from beneath the car

Maybe you hit a armadillo? lol..

Jul 14, 2015 | 05:09 PM

Thirdgen89GTA

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From: Chicagoland Suburbs

Car: 1989 Trans Am GTA

Engine: LT1, AFR 195cc, 231/239 LE cam.

Transmission: M28 T56

Axle/Gears: 3.23 10bolt waiting to explode.

Re: Strange Slam from beneath the car

Only a few things that can cause that kind of noise in that area. Either the transmission smacked the tunnel because the mount broke. Or the tq arm mount is loose.

I replaced mine but it doesn't like the new engine and occasionally bangs. I'm going to have to install the ES mount I have I think.