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Topic ClosedCarb and distributor ID

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Turbo301 View Drop Down
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Direct Link To This Post Topic: Carb and distributor ID
    Posted: 29-January-2011 at 12:58AM

I went underhood (in a snow storm, so the front's a bit wet now Cry) and dug out a couple of ID numbers:

B 7D 21
I found a bit of info on-line to help decode them: I know that they are 1977 parts, and I think the "DA" in the distributor and "EB" on the carb are the revision levels. "7D5" and "7D21" are year/month/day of manufacture, I believe? It would fit wth the May build date of my car... those would be fresh parts!
What I'm wondering is the "O" in the distributor and the "W" in the carb. These are the application codes (i.e. whether it's in a truck, a T-bird, a Cougar, etc.). I was wondering why these are different for the two parts?
I love stuff like this, it's like looking through the pyramids and deciphering the hieroglyphs!
1977 Cougar XR7
1980 turbo Trans Am
2009 Pontiac G8 GT
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Psquare75 View Drop Down
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Direct Link To This Post Posted: 29-January-2011 at 2:13AM
For some reason I can't fathom Some of the 77-79 Parts are 


and D7W*

O = Torino/mid sized chassis 
W = Cougar/Tbird (which also overlaps onto the LTD II/Ranchero body).

Some parts just happened to overlap, depending on what body it was designed for *first*. 
77 XR7 460/C6/3.00:1 *SOLD*
78 XR7 523/C6/3.5:1
79 F100 460/TKO500/3.25:1
'I also have some left over potatoes-I understand you can generate electricity from them'- Foote500
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