What is it a 230 or 250 GM straight 6 F0916CCD 10W147291 Casting #3921968

Scott Danforth

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its the casting marks on the side of a GM inline six block casting. the casting could be used for one of two motors

one is a 230 cubic inch inline 6 cylinder
one is a 250 cubic inch inline 6-cylinder

both motors are GM truck engine motors with the 250 used as the Mercruiser 165 years back

since the same casting was used by both motors, only differed by rotating assembly, only way to truly tell displacment is to pull the pan and measure the stroke.

now, do you have more context to your question?
 

Cpotter78!

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its the casting marks on the side of a GM inline six block casting. the casting could be used for one of two motors

one is a 230 cubic inch inline 6 cylinder
one is a 250 cubic inch inline 6-cylinder

both motors are GM truck engine motors with the 250 used as the Mercruiser 165 years back

since the same casting was used by both motors, only differed by rotating assembly, only way to truly tell displacment is to pull the pan and measure the stroke.

now, do you have more context to your question?
I have a 165 in my boat but the water jacket was vcracked when i got it well its gotten so bad i cant use it anymore icame across this engine but its not quite like mine just wondering if my parts will fitthis first one is what mine looks like and the second one is the one i got different intake and carb
 

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dubs283

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If all you need is the block then yes it will work, you just need to swap everything from the original motor to the "new" block. Depending on how far you want to go it could include swapping the internals, crank, pistons/rods, cam, new bearings, etc....
 

Cpotter78!

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If all you need is the block then yes it will work, you just need to swap everything from the original motor to the "new" block. Depending on how far you want to go it could include swapping the internals, crank, pistons/rods, cam, new bearings, etc....
well its a complete running motor so I was just thinking of putting it in there as is but should it need something I was just wondering if my stuff was better or if the new one was better
 

Scott Danforth

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Hunt down the serial numbers and look.

I myself would probably build up a 292 vs a 250
 

dubs283

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I was just wondering if my stuff was better or if the new one was better
Based on the photos the first one looks better. It has genuine mercruiser accessories and will be better off if in fact the parts are oem or equivalent. Swapping over is a process but it can be done. The mercruiser manual gives all the engine specs for a complete teardown/rebuild.

Have no idea based on the second photo what that engine package is
 

Cpotter78!

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The first two numbers are stamped in a milled shelf on the block the only numbers on it
 

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Cpotter78!

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its the casting marks on the side of a GM inline six block casting. the casting could be used for one of two motors

one is a 230 cubic inch inline 6 cylinder
one is a 250 cubic inch inline 6-cylinder

both motors are GM truck engine motors with the 250 used as the Mercruiser 165 years back

since the same casting was used by both motors, only differed by rotating assembly, only way to truly tell displacment is to pull the pan and measure the stroke.

now, do you have more context to your question?
 

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achris

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That casting number could be for either 230 or 250. Merc used 4 of GMs inline 6s...

1651805671175.png

From the casting number you can rule out the 194 and the 292. One way to determine which of 230/250 would be to pull the head and check the stroke. There may be a block height difference, but I don't know what it is...

Chris.....
 

achris

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Google is your friend....

F|0916|CCD​

Engine assembly plant: F = Flint, MI (whatever MI is? 🤷‍♂️)
Build date: 0916 = 16th September
Application: CCD = 230 cu in.w/Torque drive

1|0|W|147291​

GM Division: 1 = Chevrolet
Year: 0 = 1970
Vehicle assembly plant: W = Willow Run, MI (there's that 'MI' again)
Last six digits of original vehicle VIN: 147291

You're welcome.
 
Last edited:

Scott06

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Google is your friend....

F|0916|CCD​

Engine assembly plant: F = Flint, MI (whatever MI is? 🤷‍♂️)
Build date: 0916 = 16th September
Application: CCD = 230 cu in.w/Torque drive

1|0|W|147291​

GM Division: 1 = Chevrolet
Year: 0 = 1970
Vehicle assembly plant: W = Willow Run, MI (there's that 'MI' again)
Last six digits of original vehicle VIN: 147291

You're welcome.
MI is the abbreviation for Michigan a state in the US, also Home of the American automotive industry .
 

Cpotter78!

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MI is the abbreviation for Michigan a state in the US, also Home of the American automotive industry .
Google is your friend....

F|0916|CCD​

Engine assembly plant: F = Flint, MI (whatever MI is? 🤷‍♂️)
Build date: 0916 = 16th September
Application: CCD = 230 cu in.w/Torque drive

1|0|W|147291​

GM Division: 1 = Chevrolet
Year: 0 = 1970
Vehicle assembly plant: W = Willow Run, MI (there's that 'MI' again)
Last six digits of original vehicle VIN: 147291

You're welcome.
your awesome i tried looking it up but i was looking up mercruiser not GM so did it come out of a vehicle? because i took this out of a 1977 Caravelle 17' runabout
 

Scott Danforth

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your awesome i tried looking it up but i was looking up mercruiser not GM so did it come out of a vehicle? because i took this out of a 1977 Caravelle 17' runabout
Both of those motors came from something else and were transplanted into the boats
 
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