351C or 351M
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351C or 351M
I'm wondering if my pickup has a 351 Cleveland or a 351 Modified. All along I have been told its a Cleveland and I have been ordering parts for a Cleveland and they all fit and work properly, but when I took my starter out to put it in my new 75 F150 the casting number on the engine block was D7TEA35 and above that upside down was 9819. I searched around on the internet and i can't find a D- code 351 Cleveland. I can find D-code 351 Modifieds. I've had 6 mechanics tell me its a cleveland by measuring from the water pump to the intake, counting valve cover bolts, the size and many other things. I'm really confused here and I'm not sure what to do all of the Cleveland parts I've been ordering have fit just fine and it operates just fine. Were they all wrong? Any suggestions on this? 
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From: Virginia
The 351c is so closely related to the 351m and the 400, that most outside parts will fit with no problem. The block on the 351m/400 is taller, and the intake is wider than the 351c. But they use the same heads, and the stuff on the front is the same(waterpump and stuff like that). The harmonic balancer will not swap though.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
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From: Florida
As it was previously said, a D7TE block is a 1977-1982 351M/400 truck block.
The 9819 is the cast date of your block, which was September 19, 1979. This means that your motor is more than likely the correct one for the truck, since production of 1980 F-Series trucks started after July, 1979.
M-Block 351M/400 Photo Archive
The 9819 is the cast date of your block, which was September 19, 1979. This means that your motor is more than likely the correct one for the truck, since production of 1980 F-Series trucks started after July, 1979.
M-Block 351M/400 Photo Archive
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Thank you too Franklin2. I have a air conditioner in the way so they might not have gotten a good look at everything but on the driver side head there is a big ol M stamped on there which really sealed the deal of disappointment and embarrassment.
I thought I would have around 550 horses with all the mods and the engine and all that but no just barely 190 hp if that Thank you as well Fordzilla80. My pickup came outta the factory and onto the show room January 15th 1980. The people who owned it before me said the people they bought it from changed the engine from a 351M to a 351C and so I was plenty fine with that but I don't think that they did any change to it. probably just rebuilt it...
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From: Denver Metro Area, CO
George,
You might also ask here: 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Ford Truck Enthusiasts Forums
Also look at Bubba's stuff (link in the sticky there) as it might tell you more - especially the part about identifying the castings.
You might also ask here: 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Ford Truck Enthusiasts Forums
Also look at Bubba's stuff (link in the sticky there) as it might tell you more - especially the part about identifying the castings.
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From: Simi Valley, CA
351C/351M/400: All have 8 valve cover bolts per side. There is no timing cover per se, just a flat engine front cover plate.
The fuel pump bolts to the left (drivers) side of the engine block using a 6 & 12 o'clock bolt pattern, the only V8 fuel pump to have this pattern, as all the others are at 3 and 9 o'clock.
351C = 1970/74 Ford/Merc Passenger Cars/Ranchero's only.
351M = 1975/79 misc FoMoCo Passenger Cars; 1977/79 F100/350; 1978/82 Bronco; 1980/82 F150/350.
400 = 1971/79 misc FoMoCo Passenger Cars; 1977/79 F100/350; 1978/82 Bronco; 1980/82 F150/350.
How could 9819 refer to September 19, 1979? What does the 8 refer to?
This would be correct: 9J19 = September (J) 19, 1979 (9). A = January, M December, the letter I is skipped.
I suspect the 8 is actually a B (February) ~ 9B19
The fuel pump bolts to the left (drivers) side of the engine block using a 6 & 12 o'clock bolt pattern, the only V8 fuel pump to have this pattern, as all the others are at 3 and 9 o'clock.
351C = 1970/74 Ford/Merc Passenger Cars/Ranchero's only.
351M = 1975/79 misc FoMoCo Passenger Cars; 1977/79 F100/350; 1978/82 Bronco; 1980/82 F150/350.
400 = 1971/79 misc FoMoCo Passenger Cars; 1977/79 F100/350; 1978/82 Bronco; 1980/82 F150/350.
Originally Posted by Fordzilla80
9819 is the cast date of your block, which was September 19, 1979. 
This would be correct: 9J19 = September (J) 19, 1979 (9). A = January, M December, the letter I is skipped.
I suspect the 8 is actually a B (February) ~ 9B19
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From: Garden City
"I thought I would have around 550 horses with all the mods and the engine and all that but no just barely 190 hp if that"
Have you done anything besides what is in your sig?
The 351M/400 can be made to run more powerfully just like any other engine. The biggest deficit for this engine is low compression.
Have you done anything besides what is in your sig?
The 351M/400 can be made to run more powerfully just like any other engine. The biggest deficit for this engine is low compression.
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From: Virginia
"I thought I would have around 550 horses with all the mods and the engine and all that but no just barely 190 hp if that"
Have you done anything besides what is in your sig?
The 351M/400 can be made to run more powerfully just like any other engine. The biggest deficit for this engine is low compression.
Have you done anything besides what is in your sig?
The 351M/400 can be made to run more powerfully just like any other engine. The biggest deficit for this engine is low compression.
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They dont use same head
The 351c is so closely related to the 351m and the 400, that most outside parts will fit with no problem. The block on the 351m/400 is taller, and the intake is wider than the 351c. But they use the same heads, and the stuff on the front is the same(waterpump and stuff like that). The harmonic balancer will not swap though.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
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Just measure
The 351c is so closely related to the 351m and the 400, that most outside parts will fit with no problem. The block on the 351m/400 is taller, and the intake is wider than the 351c. But they use the same heads, and the stuff on the front is the same(waterpump and stuff like that). The harmonic balancer will not swap though.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
The reason the mechanics were looking at the distributor area is to look for the "step" in the casting around the distributor hole. Even though they made the 351m/400 block taller, which makes the intake wider, they used the same distributor as the 351c(429/460 also I believe). So to use the same distirbutor with the taller block, they had to "sink" the dist mounting hole down in the block. Then the casting "steps up" as you move toward the intake surface. This area is smooth and even on a 351c.
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From: Virginia
As I stated earlier, the 351m/400 does use a different block, but it's very much related to the 351c.