radiator part number decoding

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DeanOdart

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Can anybody tell me what these radiators are from and would they cool a bigblock in a a body?3443963 and 3781745
 
I can't find either one of those numbers on the lists I've got, are you sure of the numbers. For the BB you're going to need the biggest 3 core stock rad that'll fit with a good fan and shroud or a good aluminum 2 core from any of the majors.

Terry
 
Try one of these;

3673915 or-3673015

1973 340 Dart with A/C and Auto Trans --26 Inches wide !!

Mopar did not spend a bunch of money on their cooling systems for nothing.
 
They both measure 26" across and I do believe they may be newer than 1974.The part numbers are the 4 digits than a space than the 3 digits.They also have a pentastar on top.I went online and found only numbers up to 1974.What is the difference between a 26" smallblock radiator and a 26" bigblock radiator,I suppose the number of cores right????
 
3443963 = 1971 c body, 360, auto ,a/c ,26" inch

3781745 = ? newer than 1974
 
Thanks!!!!!!!Will this cool a bigblock???????I found out there are 3 cores in it by feeling inside the radiator cap area.I HOPE this is not a stupid question!!
 
yes it should be fine. the only thing you will have to contend with is the top hose will connect on the opposite side for a small block vs. a big block...
 
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