Rockwell T-221 Guru Needed! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kingman · 10-28-2003, 12:26 PM

I have a 67 K20 with a SM420 and a Rockwell T-221. I have read about the noise level of the T-221 and I am wandering if that is what is making the whining noise in my or if there is something else wrong. The whining noise I get is loud enough that a radio can not drowned it out. It whines badly when accelerating and deccelerating, but is totaly quiet if I give it enough gas to keep the truck from speeding up or slowing down. I have seen some guys say that theirs stops whining at 60 mph, mine does not. Any thoughts?

10-28-2003, 12:26 PM	#1
kingman Registered User Join Date: Oct 2003 Posts: 2	Rockwell T-221 Guru Needed! I have a 67 K20 with a SM420 and a Rockwell T-221. I have read about the noise level of the T-221 and I am wandering if that is what is making the whining noise in my or if there is something else wrong. The whining noise I get is loud enough that a radio can not drowned it out. It whines badly when accelerating and deccelerating, but is totaly quiet if I give it enough gas to keep the truck from speeding up or slowing down. I have seen some guys say that theirs stops whining at 60 mph, mine does not. Any thoughts?

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