400m motor
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From: lacey twp
400m motor
can any one here help me i need to find out what year mymotor is i have all the casting numbers and serial number if any one nows how to do so please help the casting numbers are d7te-a3b and the serial number is 074152rm5 i would like to now the year and what truck or ccar this motor came out of thanks for the help rehgards mark
Cargo Master
Joined: Mar 2008
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From: Goliad, Texas
this engine is in a 1975 F250?
the engine would also be a 400. the 400's smaller brother is the 351M. the 400 doesn't have an M though since there is only one 400.
to help some the 351Ms and 400s were only put in trucks from 1977-1979 if I remember correctly.
the engine would also be a 400. the 400's smaller brother is the 351M. the 400 doesn't have an M though since there is only one 400.
to help some the 351Ms and 400s were only put in trucks from 1977-1979 if I remember correctly.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
can any one here help me i need to find out what year mymotor is i have all the casting numbers and serial number if any one nows how to do so please help the casting numbers are d7te-a3b and the serial number is 074152rm5 i would like to now the year and what truck or ccar this motor came out of thanks for the help rehgards mark
D7TE-A3B = 351M or 400 block casting ID number used 1977/79.
It could be a 351M or a 400.
Casting numbers on engine blocks cannot be decoded to determine the actual size of the engine.
The only way to know for sure is to measure the stroke.
351M = 3.50" / 400 = 4.00"
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From: lacey twp
i got the motor from a friend and put the motor into the 1975 the origanal was the 360 that i destroyed the cam shaft was in 14 pieces and 3 blown apart pistons and 3 snapped rods that is why the 400 is now in the truck ive heard that the 400 is a 400m because its the 351c block with bigger heads onit thats why its a 400m but im new to fords i always liked my chevys but i like the style of the old fords the serial number i gave would not determin any thing or what get back to me thanks regards mark
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
i got the motor from a friend and put the motor into the 1975 the origanal was the 360 that i destroyed the cam shaft was in 14 pieces and 3 blown apart pistons and 3 snapped rods that is why the 400 is now in the truck ive heard that the 400 is a 400m because its the 351c block with bigger heads onit thats why its a 400m but im new to fords i always liked my chevys but i like the style of the old fords the serial number i gave would not determin any thing or what get back to me thanks regards mark
351M is the only engine that Ford used the M with.
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