Help with '71 engine ID...
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Junior User
Joined: Aug 2001
Posts: 99
Likes: 0
From: Clearwater, FL
Help with '71 engine ID...
I recently got a '71 F100 I6, three on the tree, and I'm not sure if this engine is a 240 or a 300. Is there an easy way to spot the differences between the two, sans dropping the pan and looking for numbers? The valve cover sticker is there but the numbers fell off a few years ago.
F10ALLxxxxx
There is a stamped tag riveted on the door that reads 114 NET HP @ 3800 RPM.
Hope this helps, Thanks.
F10ALLxxxxx
There is a stamped tag riveted on the door that reads 114 NET HP @ 3800 RPM.
Hope this helps, Thanks.
Elder User
Joined: Jun 2002
Posts: 851
Likes: 0
From: Elizabeth City, NC
Help with '71 engine ID...
Isn't the air cleaner on a 240 on the driver's side of the engine while on a 300 it is on the passenger?
Barry is correct. The fourth digit of the VIN tells you which engine it came with from the factory.
A=240CID I6 1V Carb
B=300CID I6 1V Carb
Barry is correct. The fourth digit of the VIN tells you which engine it came with from the factory.
A=240CID I6 1V Carb
B=300CID I6 1V Carb
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Help with '71 engine ID...
Russell, It is my understanding that like the FEs you cannot visually tell any difference between the 240 & 300. Like the 360 & 390 the stroke is the only difference.
The 223 has the initake on the drivers side while the 240/300 is passenger.
The 223 has the initake on the drivers side while the 240/300 is passenger.
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hillcountryflt
1967 - 1972 F-100 & Larger F-Series Trucks
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Jul 18, 2016 05:51 PM
