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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

240 or 300?

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Old Apr 21, 2009 | 05:26 PM
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240 or 300?

Any way to positively ID if motor is a 240 or a 300?
VIN says truck came with a 240, guy before me had it advertised as a 300
 
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Old Apr 21, 2009 | 06:55 PM
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Welcome to FTE

Most sellers are clueless, and can lie worse than used car dealers, lawyers and fisherpersons.

99% of the time, they don't know one engine size from another.

In this case...measuring the stroke is the way to tell.

240: 3.18"

300: 3.98"

 
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Old Apr 21, 2009 | 07:20 PM
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thanks for the welcome, just got a 67 F100 (previous owner of a 72 F100, 82 F150, 86 F150, 93 F150, 02 F150 and present owner of a 07 Fusion, gotta love those Fords) engine supposedly rebuilt and back together but out of the truck, need fuel pump and water pump and I see that the water pump is different between the 240 and 300, any way to tell without popping the head off?
 
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Old Apr 21, 2009 | 08:28 PM
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Originally Posted by snwbdrny
thanks for the welcome, just got a 67 F100 (previous owner of a 72 F100, 82 F150, 86 F150, 93 F150, 02 F150 and present owner of a 07 Fusion, gotta love those Fords) engine supposedly rebuilt and back together but out of the truck,

need fuel pump and water pump and I see that the water pump is different between the 240 and 300 any way to tell without popping the head off?
The 1965/74 240 and the 1965/79 300 waterpump is the same...with one exception:

D5TZ8501A .. Waterpump

Fits: 1965/74 240 I-6 and 1965/79 Light Duty 300 I-6 / Fits: 1965/72 Galaxie/LTD with 240 I-6.

C5TZ8501C .. Waterpump

Fits: 1965/70 300 Heavy Duty engine only.
-----------------------------------------
The 300 pump used from 1980 thru 1996 is different than what was used 1965/79.

The 240 was discontinued after 1974.
 
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Old Apr 22, 2009 | 04:58 AM
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Originally Posted by snwbdrny
Any way to positively ID if motor is a 240 or a 300? VIN says truck came with a 240, guy before me had it advertised as a 300
You will need a helping hand to pull it off, but you might try removing one of the sparkplugs (all would make it easier) and poking a 6-8in. piece of white house wire into one of the bores. Place a finger on the end of the wire and rest a Sharpie on the manifold against the wire. Have a friend rotate the engine with a socket on the crankshaft nut a couple rounds and then measure the length of the mark on the wire.

Use the two numbers provided by Bill to determine which engine you actually have.



John
 
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