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Veteran
Posts: 122
 Location: Murray Bridge, South Australia | I have now pulled down the 1958 Desoto 360 engine ( the serial number of the block is L - 360 40976 which is a 64 model casting? ) and have noticed that a lot of the bolts are not DDPC stamped, suggesting work has been done and other bolts used. Is there a place I can go on the internet to buy the bolts I need to make the restoration the best I can? Also as we are metric in Australia are the bolts UNC?
Appreciate all the help!! |
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 Expert 5K+
Posts: 6576
      Location: Newark, Texas (Fort Worth) | There are bolt kits here in America. Here is a stainless set... https://www.ebay.com/itm/255407477526?chn=ps&norover=1&mkevt=1&mkrid...
ARP is a very high quality manufacturer of hardware: https://www.summitracing.com/parts/arp-545-9801?seid=srese1&gclid=EA...
Steel: https://www.ebay.com/itm/134572420909?chn=ps&mkevt=1&mkcid=28&srslti...
361 is the same as 383, 350, 400. 426, 440 use a lot of the same bolts. Marc. |
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 Exner Expert 10K+
Posts: 10082
     Location: So. Cal | I don't think you can get the DPDC bolts anywhere except from used cars. Also, I have never seen an engine that used those exclusively and some brands/years didn't seem to use them at all. None of my '56 Plymouth motors used any of those bolts, but they are used exclusively on the Chrysler hemi intake manifold & water pump housing, but not on the water pump insert. My '58 DeSoto engines only used them for the long water pump bolts, not much else. I believe that mopar only used these bolts when they had to source their own specific bolts and couldn't get them already in stock from their suppliers. So it's a fallacy to think that every bolt originally came with this symbol on them. And, yes, they were UNC. Metric didn't start on US autos until the mid 80's.
If you would like to see what is imprinted on my '58 DeSoto intake manifold bolts, I can take a picture for you. It's not the DPDC symbol. I have 2 of these engines which haven't been touched much, if at all, and two more that are reasonably original. So I can get pretty good confirmation for what was used.
Edited by Powerflite 2023-05-23 2:26 PM
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 Exner Expert 10K+
Posts: 10082
     Location: So. Cal | Also, the "L" designation in front of your 361 engine number denotes a proper 361 from 1958. I'm not sure why you would think it is from 1964. Here is the letter designation.
K = 1957
L = 1958
M = 1959
P = 1960
R = 1961
S = 1962
T = 1963
V = 1964
A = 1965
B = 1966
C = 1967
D = 1968
E = 1969
F = 1970
G = 1971
H = 1972
J = 1973
4T = 1974
5T = 1975
6T = 1976
7T = 1977
8T = 1978 |
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Veteran
Posts: 122
 Location: Murray Bridge, South Australia | Hi all thanks for the info, as to the 1964 designation from a so called specs site seems they are not correct. Thanks guys really appreciate it!! |
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