Engine info
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Senior User
Joined: Mar 2008
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Engine info
Where exactly does a guy look on his engine, to find the numbers to check engine statistics?
I want to be sure of what I have for a motor and need some guidance.
(I was told it was a transplanted 390 V8 from a '66 thunderbird, but i guess ya never know for sure. I like it no matter what it is, but I'd be interested in finding out exactly.)
Thanks for any help!
~Bob
I want to be sure of what I have for a motor and need some guidance.
(I was told it was a transplanted 390 V8 from a '66 thunderbird, but i guess ya never know for sure. I like it no matter what it is, but I'd be interested in finding out exactly.)
Thanks for any help!
~Bob
Super Moderator
Joined: Apr 2004
Posts: 34,472
Likes: 2,799
It is very hard to know for sure.
For the head casting number location, scroll down here:
ford head casting numbers,crankshaft casting numbers picture locations
Nice pic in that one, this has all the other locations for id info:
FE Engine Identification
Remember, just because the casting number might decode to a certain year and vehicle line, that does not mean it was origianally installed in that year or vehicle line. Casting numbers are pretty limited, but a casting code and date code will get you a little closer.
Check your PM also.
For the head casting number location, scroll down here:
ford head casting numbers,crankshaft casting numbers picture locations
Nice pic in that one, this has all the other locations for id info:
FE Engine Identification
Remember, just because the casting number might decode to a certain year and vehicle line, that does not mean it was origianally installed in that year or vehicle line. Casting numbers are pretty limited, but a casting code and date code will get you a little closer.
Check your PM also.
More Turbo
Joined: Apr 2007
Posts: 572
Likes: 3
The best way is to measure the stroke. Get the motor to top dead center (TDC) and pull out the #1 spark plug. Insert a wooden dowel and make a mark. Then get the motor to bottom dead center (BDC) and make another mark on the dowel. Between the marks is you stroke. 3.5" = 352/360 roughly 3.75" = 390 roughly 4" = 410/428.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Bob, Without opening it up, there is no absolute way to tell for sure. The stroke measure along with some casting numbers can be a guide.
I believe if you do the TDC thing, passenger side front, you can can then go to passenger side rear and get the measurement for the stroke. I believe they are 180º opposed.
I prefer using a piece of 14ga. white house wire because it is smaller and the rubber covering slides easier.
John
I believe if you do the TDC thing, passenger side front, you can can then go to passenger side rear and get the measurement for the stroke. I believe they are 180º opposed.
I prefer using a piece of 14ga. white house wire because it is smaller and the rubber covering slides easier.
John
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
It is very hard to know for sure.
For the head casting number location, scroll down here:
ford head casting numbers,crankshaft casting numbers picture locations
Nice pic in that one, this has all the other locations for id info:
FE Engine Identification
Remember, just because the casting number might decode to a certain year and vehicle line, that does not mean it was origianally installed in that year or vehicle line. Casting numbers are pretty limited, but a casting code and date code will get you a little closer.
For the head casting number location, scroll down here:
ford head casting numbers,crankshaft casting numbers picture locations
Nice pic in that one, this has all the other locations for id info:
FE Engine Identification
Remember, just because the casting number might decode to a certain year and vehicle line, that does not mean it was origianally installed in that year or vehicle line. Casting numbers are pretty limited, but a casting code and date code will get you a little closer.
Only when the blocks were finished...could they be another size.
Many of these blocks have 352 cast onto the drivers side of the block...that doesn't mean diddly-squat, either.
You cannot go by date codes, considering the date code only refers to the day the block was first cast.
It could be a year or more before a block found its way into a vehicle, considering that the foundry was in Dearborn, then the blocks after they were seasoned were then trucked to the engine plant.
After the engine was assembled, it was then shipped by rail to one of the dozens of assembly plants across the US, or to Oakville, Ontario Canada.
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