1972 340 Radiator Part # Controversy

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Mattwood440

Mattwood440

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@Alaskan_TA

Barry, I tagged you since you are one of the best number gurus I know of and probably have access to more Hamtramck broadcast sheets than anyone.

This also goes out to anyone with a 72 340 A body with an original broadcast sheet.

The issue I'm having is finding the "correct" radiator part number for a 72 Duster/Demon 340 auto trans. All the legible broadcast sheets I've found online for said models, across multiple SPD months, have the number "36" under RAD on Line 3. I was under the impression that is the last 2 digits of the part number. I believe that would be indicating radiator 3574636. However, the parts number book, and lists I've found online both show 3574636 as being manual trans only. What gives?

Further support come from Joseph P's original survivor 72 Duster 340 auto. His broadcast sheet says 36 and his radiator is 3574636. His and mine were both built the last week of Oct 71, Hamtramck plant. I don't have my broadcast sheet, but my 340 auto also has radiator 3574636. To further complicate things, mine has AC and his doesn't.

Didn't the 70-71 a body 340's use the same radiator, regardless of transmission? Is it possible that 72 did as well but an error was entered into the part number book?

17227131335143363153481689334408.jpg
 
Many radiators have the same part number for automatic or 4-speed with plugs in the holes that the trans lines would normally go into. My book lists 036 as a 340 auto or manual, also listed is the 034 auto or manual and 318-340. I wouldn't worry about it, by 72 things were going nuts anyway...
 
HemiSSDart said:
Many radiators have the same part number for automatic or 4-speed with plugs in the holes that the trans lines would normally go into. My book lists 036 as a 340 auto or manual, also listed is the 034 auto or manual and 318-340. I wouldn't worry about it, by 72 things were going nuts anyway...
Click to expand...

I'm not that worried, I'm just trying to document what is still original as I disassemble. What book?
 
72 A body 340 both transmissions with A/C 22" #3574658
3574634 is without A/C with N51 22"
3574636 for manual transmission
 
toolmanmike said:
72 A body 340 both transmissions with A/C 22" #3574658
3574634 is without A/C with N51 22"
3574636 for manual transmission
Click to expand...
That's the controversy. I think 3574636 is the standard 340 radiator for both auto and manual. There is a 636 in an auto that's a documented survivor, with "36" on the broadcast sheet. @OneOfMany above has "36" on his b sheet. All the A body b sheets I've found online with E55 R34, without A/C, also have "36" under RAD.

However, I did find a Duster's b sheet online built in Oct 71, same as mine, with H51 A/C which had "58" under RAD so that does seem correct. That means my A/C car's radiator was replaced at some point with a re-core Mopar that is 3574636 by random chance coincidence
 
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