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Engine number details #421034 02/06/19 06:41 PM
Joined: Nov 2018 Posts: 42 WICHITA StephenC OP Shade Tree Mechanic
OP StephenC Shade Tree Mechanic Joined: Nov 2018 Posts: 42 WICHITA	As some of you know I have a 1946 Chevy truck. The Engine is not original and I an having trouble understanding the numbers on it. Any info would be greatly appreciated. The number is CON4 J 121 ...would that be October 12 1951 ?

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Re: Engine number details StephenC #421035 02/06/19 06:53 PM
Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi. Chev Nut ChatMaster - 25,000
Chev Nut ChatMaster - 25,000 Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi.	the numbers you have listed do not ID the engine. First you need the block casting number. It is on the right lower side of the block and will have 7 raised numbers with the first number being a 7. If it is a later engine the number may be behind the starter. The other ID is the numbers STAMPED into the horizontlal shelf behind the distributor. Gene Schneider

Re: Engine number details StephenC #421039 02/06/19 07:15 PM
Joined: Nov 2018 Posts: 42 WICHITA StephenC OP Shade Tree Mechanic
OP StephenC Shade Tree Mechanic Joined: Nov 2018 Posts: 42 WICHITA	that number came from just below the distributor...i'll see if i can find the others..Thanks

Re: Engine number details StephenC #421068 02/07/19 03:58 PM
Joined: Nov 2018 Posts: 42 WICHITA StephenC OP Shade Tree Mechanic
OP StephenC Shade Tree Mechanic Joined: Nov 2018 Posts: 42 WICHITA	cylinder head casting 3836848 Engine # F1012J

Re: Engine number details StephenC #421071 02/07/19 05:16 PM
Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi. Chev Nut ChatMaster - 25,000
Chev Nut ChatMaster - 25,000 Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi.	If the last letter is a J the engine is from a 1959-1962 1/2 ton truck The 3836848 head casting number went from 1956-1962 235 engines. Last edited by Chev Nut; 02/07/19 05:30 PM. Gene Schneider

Re: Engine number details Chev Nut #421080 02/07/19 08:49 PM
Joined: Nov 2018 Posts: 42 WICHITA StephenC OP Shade Tree Mechanic
OP StephenC Shade Tree Mechanic Joined: Nov 2018 Posts: 42 WICHITA	Thanks chev nut

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