Non A/C B-body heater boxes [oo=====oo]

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Non A/C B-body heater boxes [oo=====oo] #1123937 11/29/11 09:24 AM 11/29/11 09:24 AM
Joined: Jun 2003 Posts: 21,397 It's a dry heat gtx6970 OP Too Many Posts
gtx6970 OP Too Many Posts Joined: Jun 2003 Posts: 21,397 It's a dry heat	Guys, I'm doing a bit of research on the 1970 heater box stamp. Basically I'm trying to narrow down the changover date , build plant and/or built for USA or Canada markets I have both 2936680 and 2936681 What I've found and been told so far is,,,,, 680 so far I think is US - built after Jan 1970 681 is US before Jan 1970 ( also used on Canadian market vehicles ) But is it all thru the model year on Canadian market cars? Also, so far I have not found any differences between the 2 Anyone with there original heater box in place , all you need do is get me the number on the box and the cars SBD and if it's built for US or export if known. TIA 6941608-heater-box-stamps.JPG (49 downloads)

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