Recently (well, within the past four days) I've noticed that when I hit the gas and accelerate from a slow roll or stand still I hear this knocking noise come from my rear axle. I guess I sorta feel it too? I dunno..it's the noise that bothers me...any ideas?

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1992 Camaro RS (Auto) 5.0L TBI
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Performance mods
NOS (125 HP shot),Dynomax cat-back exhaust, Hedman headers, K & N open element/ X-Stream lid, MSD 6A ignition, MSD 8.5mm plug wires, LT1 camshaft
Soon to be installed:
Performance intake manifold, B & M 2400 RPM stall torque converter, Trans Go shift kit, World Products Torquer heads, Ed Wright Fast Chip

Audio
Sony Xplod CDX-M610 head unit, Pioneer 2-way 4x6 front speakers, Pioneer 3-way 6x9 rear speakers, 12 inch Pioneer VCCS PRO subwoofer, QLogic sealed box, Kicker ZR360 amplifier, Lightning Audio 1 farad capacitor

Other
Macewen White Faced Gauges/Shift overlay, A-pillar gauges (Phantom oil pressure, Air/Fuel), 180* thermostat, Window Tint, chrome valve covers, xenon headlights

 

More likely it's your tranny mount thats broken. I've had this happen on 2 cars and you get a lound bang when you mash the gas. Order an energy suspension tranny mount. They're about $20 from summit.

Regards
Rob

 

yeah, I used to get that too, it was my tranny mount.

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'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."

 

Thanks guys, I appreciate your help.

 

hey i have a weird developement on this thing, i replace my mount with an energy suspension one, but now instead of from low rpms to idle and at the mashing at the beginning of gears it bumpin, its quieter and happens off and on when i mash the gas when i normally drive, it happens even when i dont mash it now that i remember, it happens randomly, it sounds like its farther back than where it sounded/felt whith the busted mount, anyone know why this is? its damned annoying.

 

I had a similar prblem with my car. It sounded like it was coming from the rear end. It sounded like the rear was crapping out on me. *** knows, I am familiar with that sound because I have had a few rears go on some of my cars. Well I took it to a tranny friend of mine, and he said I needed to change the rearend fluid. He said that the posi additives in the rear break down, and the clutches bind up. He was pretty sure about this. I was thinking that he was full of crap, and I would need a rear (the sound was pretty bad). But he changed the fluid, and it is perfect now, no clanging. Check it out man. hey if you haven't changed the fluid in a while, it certainly won't hurt anything.
good luck man
Mike

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Gran Turismo Americano "The Ultimate Firebird"
Smokin 1989 GTA- Bone stock except for exhaust. (no catalytic-stainless pipe into Flowmaster 2 chamber) & AC Delco Rapid Fire Plugs

 

thanks im goin to the shop today for an inspection, ill ask them if they can do that...

 

U-Joint.

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"Question with boldness even the existence of a *** ; because, if there be one, he must more approve of the homage of reason, than that of blind-folded fear."

-Thomas Jefferson