The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Drive-line noises

amccomb · 05-09-2014, 12:05 AM

sm 420 has straight cut 3rd and 4th gear this will cause gear whine. If you look at a modern tranny they have gears that are cut at a steep angle.

05-09-2014, 12:05 AM	#26
amccomb Registered User Join Date: Jun 2011 Location: mass Posts: 150	Re: Drive-line noises sm 420 has straight cut 3rd and 4th gear this will cause gear whine. If you look at a modern tranny they have gears that are cut at a steep angle.