Defender67
02-13-2011, 10:35 PM
Purchased a 67 Camaro as a new project. Previous owner(s) installed a 12 bolt rear with 4.10s, built th400 with zz4 350. The rear suspension has ladder bars. Entire setup is about 10 years old, but only has 14k miles on it. Rear rubber is BFG DRs. Aside from that, I have no other information about what was installed or how. (it is a project car after all).
I can best describe the noise as a low-pitch hum that increases in volume with speed. It doesn't really become noticeable until about 40+ mph. I actually thought it was just the engine/exhaust until I was coasting down a hill at about 65mph and i shifted into nuetral, as the rpms dropped to idle... I noticed a majority of what I thought was engine noise was still there, presumably from the rear end.
I don't have regular access to a lift but would like to hear any ideas so I know where to start looking when I do get the car up.
My first thought is u-joints going bad. Any possibility the ladderbars are putting pressure on the wheel bearings? (the sound is similar to a wheel bearing, but I don't think it is that as I cannot hear it most of the time).
Any advice would be appreciated. Thanks!
I can best describe the noise as a low-pitch hum that increases in volume with speed. It doesn't really become noticeable until about 40+ mph. I actually thought it was just the engine/exhaust until I was coasting down a hill at about 65mph and i shifted into nuetral, as the rpms dropped to idle... I noticed a majority of what I thought was engine noise was still there, presumably from the rear end.
I don't have regular access to a lift but would like to hear any ideas so I know where to start looking when I do get the car up.
My first thought is u-joints going bad. Any possibility the ladderbars are putting pressure on the wheel bearings? (the sound is similar to a wheel bearing, but I don't think it is that as I cannot hear it most of the time).
Any advice would be appreciated. Thanks!