oops - I deleted incorrect info - thanks for the "heads up", Mike.
I dimly recall that the SM420 was painted black on my 54/55 GMC Z-Series 350 COE (but, it might have been real dirty and it might have been a replacement transmission)?
Some oldGMCtrucks members indicated that replacement transmissions might have been a different color than an original-equipment SM420.
Sorry about my incorrect-information link.
Last edited by tclederman; 01/09/2021 6:52 PM. Reason: changed/deleted incorrect informationn
