Engine number questions
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Freshman User
Joined: Oct 2002
Posts: 27
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From: Whetstone USA
Engine number questions
Okay, a friend has a truck that we are trying to find out what engine it has in it. We can't find a number on the block and found this number on the heads between the center plugs: C8AEH Where might I find the block number and what are these heads?
Thanks in Advance!
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
Thanks in Advance!
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
Engine number questions
Those heads are standard FE heads from a vehicle model year between 1968 and 1971. The block number is located on the passenger side an a little towards the front in the freeze plug area.
Freshman User
Joined: Oct 2002
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Engine number questions
i have a 68 f100 and my block has no casting numbers. i took the engine all the way out of the truck,and took it to a machien shop and the guy there could not find them even after cleaning the thing up.the only way i knew i had a 360 was by the vin# the forth digit was y not sure but think if the vin# is h (4 digit)you have a 390.like ratsmoker said about the heads i have the same ones.i just got in to this and been reading alot on here so i dont know much.just trying to help
Senior User
Joined: Oct 2001
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From: Miami U.S.A.
Engine number questions
I believe you may have a service block. I would not however trust the VIN decoder. Any motor could hav ebeen put in there. The only sure fire way to know which engine you have is. Measure bore and stroke. If it turns out to be FE whaich those heads probably are then you can determine what you have and where you can go from there.
Scotty
Scotty
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Freshman User
Joined: Oct 2002
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From: Whetstone USA
Engine number questions
Dang, we were hoping to be able to tell what engine it was without tearing it apart. Oh well, thanks for the info.
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
Senior User
Joined: Oct 2001
Posts: 479
Likes: 0
From: Miami U.S.A.
Engine number questions
Don't give up yet you can check the stroke With a dowel or other peice of something. Turn motor over by hand and mark the lowest mark and the highest mark. Measure and see what ya got. you most likley have a 360 which has a stroke of 3.5". If you get 3.784 or slightly over 3 3/4 " you have a 390. If it is nearly 4 inches you may have 428. I really doubt you have a 428.
The bores are another story. you will have to disassemble to find out what they are. Good luck
Scotty
The bores are another story. you will have to disassemble to find out what they are. Good luck
Scotty
Lead Driver
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From: Texas
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Freshman User
Joined: Oct 2002
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From: Whetstone USA
Engine number questions
Scotty, are you talking about a dowel in the plug hole? We am trying to do this without yanking the heads.
Thanks
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
Thanks
Jim
76 F250 HiBoy
460 with mild mods
C6 that will 'bout throw your head into the bed!
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Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
Engine number questions
He is talking about removing the spark plug and putting the engine at TDC then stick a dowel down the hole and mark it. Rotate the engine to BDC and mark the dowel again. This will give you the stroke.
New User
Joined: Nov 2002
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From: Northern co
Engine number questions
The date castings are by the oil pan by the oil filter mount on the block.The date may help. (ex 3a12 is Jan 12 1963) .If the block has 28 dif on the right side it is a 428 block, but it may have a 390 or 360 crank inside. On most 428 blocks they will have a 428 cast in the center freeze plug hole. It is hard to find,I had to clean the rust off before I could see it.
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