casting numbers on the block
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New User
Joined: Jul 2007
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From: washington il
casting numbers on the block
i have a 77 bronco and my hubby is trying to get the motor running strong. we have been trying to find out about the motor that is in the truck but cant find anything. does D7TE.A3B mean anything to anyone? he also found a plate that was attached to the engine with a bunch of numbers on it any ideas on where we can go to find out what they mean? the numbers are stamped on a Sequel corp tag and it says that it is the ser# and mod# will that tell us anything about the engine? this is not the original engine in thae truck.
Elder User
Joined: Jan 2004
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From: Troy,NY
The D7TE means 1977 truck engine. That's all I have for you. Sorry. You might have better luck posting this in the small block forum below.
https://www.ford-trucks.com/forums/forum55/
https://www.ford-trucks.com/forums/forum55/
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Originally Posted by little jo
i have a 77 bronco and my hubby is trying to get the motor running strong. we have been trying to find out about the motor that is in the truck but cant find anything. does D7TE.A3B mean anything to anyone? he also found a plate that was attached to the engine with a bunch of numbers on it any ideas on where we can go to find out what they mean? the numbers are stamped on a Sequel corp tag and it says that it is the ser# and mod# will that tell us anything about the engine? this is not the original engine in thae truck.
Your style of Bronco used the 302 engine from 1969 thru 1977. D7TE is a Ford casting/engineering number dating to 1977, when the casting process occured. The casting number will not lead directly to a part number in most cases.
The T in D7TE does not necessarily mean the engine is for a truck only. 1971/79 Lincolns/Fords/Mercurys, F Series Trucks and Econolines for example, all used D1TE-6015-AB casting numbered engine blocks. The basic 302 bare engine block is the same from 1974 thru the 1980's.
What engine do you know have? If it's a 302, it's from the correct time frame, and could have been swapped from any 302 equipped vehicle from 1977 and later.
Last edited by NumberDummy; Jul 19, 2007 at 06:29 AM.
5th Wheeling
Joined: Dec 2020
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There is no 400M I went down this wormhole a few months back looking for a block to build for my '77 F250. The code you are trying to figure out is indeed a 400. If you measure the stroke of the piston it will be 4", and the crack will be stamped with an f5 on it. There is also a rib on the front of the crank that is specific to the 400. The only difference between a 351M, and a 400 is the crank and stroke. Same block.
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