When i accelerate around 70-80 km i hear a loud howling. It stops when i pass 80 or let off the gas. What could cause this?

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88 GTA Notchback
350 TPI, T-roofs
Fully loaded, Digital dash
firebird red

 

Tranny ? Did ya check the fluid ?

 

Rear end? That's the usual thing...

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"So many Mustangs, so little time..."

 

RB83 is correct. Im sure hes on the money. If it howls its your gears. Take it to a shop I'm positive that it is your problem. I installed 3.73's and it was only ONE shim off and it howled like a SOB. Never affected performance cause it was so close just made lots of noise throughout all the gears. But im positive its your rearend.

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90 Iroc G92 LB9
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Dual Cats, 3.42 B/W, 5spd, K&N, Homemade Ram Air, TPIS Airfoil, 160 Thermo, Mobil 1 Synthetic Oil, Dexco Anti Freeze
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