Oliver Lincoln Posted November 17, 2019 Share Posted November 17, 2019 As many others i have some difficulties to find out wich engine i have exactly. The car is a 1931 Dodge DH but engine may be swaped, because my spark plug threads are 14mm and nor 18mm as the should be. So i have no idea wich spark plugs i need. So its important for parts i may order somewhere to know about my engine. Also how much cubic inch it has and built year. Is it possible to read that from the different numbers on the block? On the head is 'Silver Dome' -no ext. cooling bypass Oliver Link to comment Share on other sites More sharing options...
keiser31 Posted November 17, 2019 Share Posted November 17, 2019 (edited) If that is a "CO" in the front of the number, it is from a 1933 Chrysler. We would LOVE to see some photos of your 1931 Dodge. OK....I would anyways. Edited November 17, 2019 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
Oliver Lincoln Posted November 17, 2019 Author Share Posted November 17, 2019 51 minutes ago, keiser31 said: If that is a "CO" in the front of the number, it is from a 1933 Chrysler. We would LOVE to see some photos of your 1931 Dodge. OK....I would anyways. Yes, but i always read 'C' for Chrysler, what is the 'O' ? and how can i find out about built year and size? Link to comment Share on other sites More sharing options...
ply33 Posted November 17, 2019 Share Posted November 17, 2019 12 minutes ago, Oliver Lincoln said: Yes, but i always read 'C' for Chrysler, what is the 'O' ? and how can i find out about built year and size? From my website: Engine Number CO3853 Found in range 1001 to 18608 Serial 2853 of 17608 Year 1933 Make Chrysler Model Six Engineering Code CO Type Inline, L-Head Cylinders 6 Bore and Stroke 3-1/4x4-1/2 Cu.In. 223.98 Compression 5.35:1 std, 6.2:1 opt BHP 83@3400 std, 89@3400 opt Source Standard Catalog of American Cars 1805-1942 1 Link to comment Share on other sites More sharing options...
Oliver Lincoln Posted November 17, 2019 Author Share Posted November 17, 2019 2 minutes ago, ply33 said: From my website: Engine Number CO3853 Found in range 1001 to 18608 Serial 2853 of 17608 Year 1933 Make Chrysler Model Six Engineering Code CO Type Inline, L-Head Cylinders 6 Bore and Stroke 3-1/4x4-1/2 Cu.In. 223.98 Compression 5.35:1 std, 6.2:1 opt BHP 83@3400 std, 89@3400 opt Source Standard Catalog of American Cars 1805-1942 WOW!! -i found that site but only saw 'VIN lookup' so i did not try my engine number! Thank you so much!! Oliver Link to comment Share on other sites More sharing options...
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