Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
In a VE V8, the centre muffler rumbles on start up, very common, especially if the muffler has had some impact.
It is the whole centre assembly from after the cat convertors to the rear mufflers.
It is a 2 in 2 out resonator which some muffler shops can replace.
The whole assembly is about $900 plus fitting from Holden.
When I've had this noise in a customers car, I do this:
LEFT foot on brake, handbrake on, drivers door open, lean over to look under car while still seated, left hand on shifter, start engine, select reverse, then you hear the noise from the muffler.
How have you gone with your problem noise?
I hope I am correct for you.