351, C or M?
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Freshman User
Joined: Oct 2005
Posts: 42
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351, C or M?
i have a '77 f250 ranger hiboy project and cant figure out what motor i have. the motor is in a '79 f100 ranger parts truck yet the # on the rear of the intake is a D7 #, i do know that it is a 351 engine and the coolant does not go thru the intake manifold. does anyone have any info that might help me?
Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
Are you questioning why the D7 intake # is in a D9 truck? If the engines were the same from 77 - 79,(which I dont know) you may get a manifold from an earlier truck (same application) from the factory, or parts might have been replaced for whatever reason. It also could be an engine transplant. Hmmmm
You might try posting the entire engines casting # on the block to see what the engine # girus come up with here. There are some folks on this forum who can tell alot from casting numbers. I would get those numbers and post another thread with a request to provide info on those #'s. Just a thought.
You might try posting the entire engines casting # on the block to see what the engine # girus come up with here. There are some folks on this forum who can tell alot from casting numbers. I would get those numbers and post another thread with a request to provide info on those #'s. Just a thought.
Laughing Gas
Joined: Mar 2004
Posts: 1,243
Likes: 0
From: Maple Ridge B.C. Canada
dandee1996 welcome to FTE! here is some info that might help you id your engine.=351c/m400(335 series)-8 bolts on rectangular valve covers.thermostat housing on block.exhaust bolt holes diagonal. timing chain housing is part of the block. also 351m/400(335series)intake is 12.7"wide. 351c is narrow. hope this helps-billy
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
Originally Posted by olfordsnstone
Are you questioning why the D7 intake # is in a D9 truck? If the engines were the same from 77 - 79,(which I dont know) you may get a manifold from an earlier truck (same application) from the factory, or parts might have been replaced for whatever reason. It also could be an engine transplant. Hmmmm
You might try posting the entire engines casting # on the block to see what the engine # girus come up with here. There are some folks on this forum who can tell alot from casting numbers. I would get those numbers and post another thread with a request to provide info on those #'s. Just a thought.
You might try posting the entire engines casting # on the block to see what the engine # girus come up with here. There are some folks on this forum who can tell alot from casting numbers. I would get those numbers and post another thread with a request to provide info on those #'s. Just a thought.
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Cargo Master
Joined: Dec 2003
Posts: 2,735
Likes: 38
From: Sunny Florida
Another way to tell a 351C from a 351M/400 is by the bell housing. All 351C motors have the small block bell pattern.
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Posting Legend
Joined: Sep 2001
Posts: 30,255
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Engine Identification from the Read First: FAQ thread at the top of the forum:
======================
351C/M/400 335 series: 8 bolts in rectangular valve covers. Timing chain housing is part of block. Thermostat housing on block. Exhaust bolt holes diagonal.
351M/400 335 series: intake is 12.7" wide the 351C is narrow.
351W/302/5.0L 6 bolts on trapezoidal valve covers. Thermostat housing on intake. Exhaust bolt holes horizontal.
429/460 385 series: 7 bolts in rectangular valve cover
352/360/390/427/428 FE series: Intake goes under valve covers.
-There are other indicators but these are enough to distinguish engine families.
======================
351C/M/400 335 series: 8 bolts in rectangular valve covers. Timing chain housing is part of block. Thermostat housing on block. Exhaust bolt holes diagonal.
351M/400 335 series: intake is 12.7" wide the 351C is narrow.
351W/302/5.0L 6 bolts on trapezoidal valve covers. Thermostat housing on intake. Exhaust bolt holes horizontal.
429/460 385 series: 7 bolts in rectangular valve cover
352/360/390/427/428 FE series: Intake goes under valve covers.
-There are other indicators but these are enough to distinguish engine families.
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Those casting numbers on part that start with D7TE or D9TE or D7AE or D9AE are ONLY Engine part DESIGN numbers
They don't mean much at all.
ie: D7TE-9425-A MEANS ...that intake manifold was 1st designed for a 1977 truck engine (probably a 351m or 400)
That's all it means.
The Important casting numbers are the little 3 or 4 digit numbers
ie: *7L25* style numbers meaning the part was cast on Novmeber 25 1977 and applies to that designed engine.
Probably a 351m or 400.
They don't mean much at all.
ie: D7TE-9425-A MEANS ...that intake manifold was 1st designed for a 1977 truck engine (probably a 351m or 400)
That's all it means.
The Important casting numbers are the little 3 or 4 digit numbers
ie: *7L25* style numbers meaning the part was cast on Novmeber 25 1977 and applies to that designed engine.
Probably a 351m or 400.
Elder User
Joined: Feb 2002
Posts: 987
Likes: 2
From: East Bend, Carolina, U.S
You can tell what decade an engine is from with those C3AE, D4TE, D2TE type numbers, so they are useful. You can't tell what decade an engine is from using those little three or four digit numbers alone. So alone they tell you what year month and day of an unkown decade.
I have never used just one set of numbers to determine what year and engine is from. I look at them all and then determine if I have an original engine assembly or a frankenford engine.
I have never used just one set of numbers to determine what year and engine is from. I look at them all and then determine if I have an original engine assembly or a frankenford engine.