Classic Moose Posted November 21, 2018 Report Share Posted November 21, 2018 I bought an engine from a 1938 dodge 1/2 ton truck and it’s turns out to be 25” long with a casting number of 666029 it must have been changed at some point and the seller ( to me) didn’t know it had been changed. Just FYI I bought it site- unseen anyone know how to identify this block? Quote Link to comment Share on other sites More sharing options...
Reg Evans Posted November 21, 2018 Report Share Posted November 21, 2018 (edited) I was told years ago when I was considering restoring a 38 1/2 ton that they all had 25" engines. The engine number should be stamped on the drivers side up front just below the head. If it is a 38 Truck motor the number should start with a T42 or T43. Edited November 21, 2018 by Reg Evans Quote Link to comment Share on other sites More sharing options...
JBNeal Posted November 22, 2018 Report Share Posted November 22, 2018 (edited) additional information - Flathead Identification Edited October 16, 2019 by JBNeal revised link 1 Quote Link to comment Share on other sites More sharing options...
Classic Moose Posted December 2, 2018 Author Report Share Posted December 2, 2018 My understanding is the 201,218, 230 C.i. are all 23 1/4" long head. The 237, 251ci May have these ci off a little are the longer 25” heads also the Chrysler and Desoto and possibly the larger dodge 1,2,5 ton trucks I believe had the longer head ( larger block) even in the 1930’s , but also the latter 1940’s chry and De So had the “ spitfire engine that is longer. My 38 plym tk can not fit the longer block so I’m trying to identify this block to falicatate a possible trade for a 23 incher casting number behind starter 666029 the sierial number isn’t trustworthy for proper identification as it looks modified Bruce Quote Link to comment Share on other sites More sharing options...
Yukonuck Posted September 30, 2019 Report Share Posted September 30, 2019 I have the exact same casting number on the engine in my Canadian 1/2 ton (1944 DD1S-16) It isn't the original engine for the truck, but it is from a 1940 Plymouth by serial number. Canadian built trucks were all 25" engines according to contacts and research I've made. Hope you manage to acquire an appropriate engine for your '38. Quote Link to comment Share on other sites More sharing options...
P15-D24 Posted September 30, 2019 Report Share Posted September 30, 2019 In the Downloads tab their is a document called CHRYSLER-DODGE Block Forge By Numbers.PDF Might find it helpful. 1 Quote Link to comment Share on other sites More sharing options...
broberts Posted November 29, 2020 Report Share Posted November 29, 2020 I'd like to get some assistance (and double checking) of the truck and engine information for my 1935 KH-32 V: body tag: B-3-0-LR15988 B-3-0 = cab for a chassis cowl KH-32V (mid size truck with just the sheet metal from the dash forward, no windshield) 15988 = sequential number in B-3-0 sequence build date: between June and October 1935 engine numbers casting date: 8-12 = August 12, 1935???? casting number (is this the correct term?): 882929-2 = ???? engine number (left side of engine block, at front, below the cylinder head): T-13-7512 T = truck engine T13: Make = Dodge Truck, Model = KH 16-18-V, KH 21-23-V, KH31-33-V Year = 1935 512th engine built???? lower casting (is this the correct term?): 107 = ???? engineering code: T-13-E T = truck, 23" long, 201 ci E = 1-1/2 ton serial number: 8239904 Quote Link to comment Share on other sites More sharing options...
Patrick vd mooren. Posted October 29, 2021 Report Share Posted October 29, 2021 Hi guys! I am new to this topic, my name is patrick and living in the Netherlands. the proud owner of a P6 Plymouth 1938… a lot of numbers but I can’t figure out which engine is in.. has to be rebuild anyway but curious as can be ? P6 *i9324* A 7 12 1937 Head 632955-1 Thanx guys! Quote Link to comment Share on other sites More sharing options...
Pete Posted October 30, 2021 Report Share Posted October 30, 2021 I have a 1938 Dodge RC half ton. I have the build card. It has the original 25" 218 engine installed at the factory. I did some research and found the all '37 and '38 Dodge trucks used the 25" engine in half ton, three quarter ton, and one ton trucks. I believe these engines were made in Canada. In 1939 they went back to the 23" engine. The Plymouth trucks used different engines than the Dodges. Pete Quote Link to comment Share on other sites More sharing options...
billrigsby Posted October 31, 2021 Report Share Posted October 31, 2021 On 10/29/2021 at 12:44 PM, Patrick vd mooren. said: Hi guys! I am new to this topic, my name is patrick and living in the Netherlands. the proud owner of a P6 Plymouth 1938… a lot of numbers but I can’t figure out which engine is in.. has to be rebuild anyway but curious as can be ? P6 *i9324* A 7 12 1937 Head 632955-1 Thanx guys! You can post your information here, Eric seems to be a walking bible when it comes to engine numbers, while not a pilot house he may be able to help. Quote Link to comment Share on other sites More sharing options...
lostviking Posted November 1, 2021 Report Share Posted November 1, 2021 If you get the numbers stamped on the side of the block, drivers side front, near the head, you can find all you need online. https://www.t137.com/registry/help/otherengines/tengines.html Quote Link to comment Share on other sites More sharing options...
tom'sB2B Posted November 2, 2021 Report Share Posted November 2, 2021 Forgive me if this is common knowledge, but I have found that on 25" engines the ID is stamped on top of the tab at the front of the engine. Where as the 23" engines the ID is stamped on the side of the tab at the front of the engine. I've also found this site helpful in identifying engines. https://www.t137.com/registry/help/otherengines/otherengines.php Quote Link to comment Share on other sites More sharing options...
Pete Posted November 2, 2021 Report Share Posted November 2, 2021 I have two old Mopars -- a 1939 Plymouth and a 1938 Dodge pickup. I have the build card for both vehicles. Both have their original engines that were installed at the factory. The Plymouth has the 23" head and the Dodge truck has the 25" head. (All '37 & '38 half tons have the long block.) Both engines have the ID stamped on left side of the engine near the top front (where a previous poster put the arrow in his pic). If it's stamped somewhere in addition I've never seen it. Pete Quote Link to comment Share on other sites More sharing options...
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