The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1970 C20 Manual Transmision Identification Help.

geezer#99 · 04-06-2018, 06:15 PM

Might be some better info here.
Likely I’m wrong and it’s a 420. I can’t remember what year the change was.

https://www.novak-adapt.com/knowledg.../manual/sm420/

04-06-2018, 06:15 PM	#18
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,522	Re: 1970 C20 Manual Transmision Identification Help. Might be some better info here. Likely I’m wrong and it’s a 420. I can’t remember what year the change was. https://www.novak-adapt.com/knowledg.../manual/sm420/