Engine identification help!!!
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Engine identification help!!!
I picked up a 79 f150 as a mud truck and the guy told me the motor was a 351c, but after trying to look up ways to identify it all i have come up with is that its not a windsor as it has 8 valve cover bolts. How can i for sure tell the difference between a 351c and a 351m? the only numbers i found on the block are on the passenger side below the exhaust ports, they were dirty and upside down but from what i could tell they are "D71(possibly a "t")-A2-8. any help is greatly appreciated! nothing else on this truck is original so it makes me suspicious of the motor
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Most likely it's a 351m.
"D7..." is 1977. 351C motors ended in 1974.
Note the big wall above the distributor hole.
Google Image Result for http://www.tmeyerinc.com/images/400%20023.jpg
Note the casting number referenced. Sound familiar?
http://grantorinosport.org/BubbaF250...locknum_01.jpg
But, maybe you got lucky. Check the stroke--not easy to do due to plug angle, but try a stiff wire down the plug hole. 3.5" for 351, 4" for 400. Good luck.
"D7..." is 1977. 351C motors ended in 1974.
Note the big wall above the distributor hole.
Google Image Result for http://www.tmeyerinc.com/images/400%20023.jpg
Note the casting number referenced. Sound familiar?
http://grantorinosport.org/BubbaF250...locknum_01.jpg
But, maybe you got lucky. Check the stroke--not easy to do due to plug angle, but try a stiff wire down the plug hole. 3.5" for 351, 4" for 400. Good luck.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
I picked up a 79 f150 as a mud truck and the guy told me the motor was a 351C, but after trying to look up ways to identify it all i have come up with is that its not a windsor as it has 8 valve cover bolts.
How can i for sure tell the difference between a 351c and a 351m? the only numbers i found on the block are on the passenger side below the exhaust ports.
They were dirty and upside down but from what i could tell they are "D71 (possibly a "t" prefix is D7TE)-A2-8 and suffix is A2B
How can i for sure tell the difference between a 351c and a 351m? the only numbers i found on the block are on the passenger side below the exhaust ports.
They were dirty and upside down but from what i could tell they are "D71 (possibly a "t" prefix is D7TE)-A2-8 and suffix is A2B
351C installed in 1970/74 Ford/Merc Passenger Cars/Ranchero's only, would not have a D7TE block casting prefix.
351C same engine family as 351M/400. All have 8 valve cover bolts, there is no timing cover per se, just a flat engine cover plate.
The fuel pump bolts to the left side of engine block, its bolt pattern is at 6 & 12 o'clock, the only V8 fuel pumps to have this pattern.
Warranty Plate located on left door face below the latch. Has the VIN, actual W.B., codes for the COLOR/TYPE GVW or MODEL/BODY/TRANS/AXLE and etc stamped on it.
COMPARE the VIN on the Warranty Plate to the VIN on the title/registration to see if they match.
People replaced damaged left doors with used doors. 99.9% of the time, they failed to install the original Warranty Plates on the replaced doors.
4th digit of VIN is engine code. 1977/79 F100/350 & 1978/79 Bronco: H = 351M / S = 400 / LMC's VIN decode info is CRAP!! Use it at your own risk.
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