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Author
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Topic: Need help/information please
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trbl4u2
Journeyman Posts: 1
From: Barboursville, W.Va. USA
Registered: May 2003
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posted 05-28-2003 12:08 AM
   
My father-in-law bought a 1987 F250 4x4. It run's like *%&#. The previous owner's removed the original engine and replaced it with what they said is a 351W and eliminated all the electronic stuff. The engine also has an Eldelbrock manifold and Holley 4BBL. I am no professional by no means but I have no idea how to find out what size and year motor this is. It does have electronic ignition in it. I need to find this info to be able to get tune-up spec's for it. Any help is appreciated.
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KULTULZ
Gearhead Posts: 188
From: Rockville, MD
Registered: Oct 2002
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posted 05-28-2003 10:02 AM
The casting I.D. no. of the engine block should be on the oil pan rail behind the starter motor. That will get you in the ball park.Does it have DURASPARK ignition? Size of spark plugs-14 or 18mm? Most likely you will have to start with the basics, compression test, verify cam/ignition timing, secondary ignition condition...fuel delivery condition. A late 351 W should have plug gap of .044. Start ignition timing a six degrees BTDC and advance from there. It is really not practical to go by factory settings as the engine has obviously been modified somewhat.
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MLariviere
Moderator Posts: 3220
From: Biddeford,Me.USA
Registered: May 99
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posted 05-29-2003 10:36 PM
The easiest way to ID a 351W from a 302 is at the front of the block. Since the 351 is 1" taller in deck height,there will be a difference in the area around the distributor. Notably is that there is a vertical rib cast into the block,just to the right of the distributor hole. I would baseline the engine first to see how it runs. You may need to add more initial timing,or carb/advance adjustments.
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KULTULZ
Gearhead Posts: 188
From: Rockville, MD
Registered: Oct 2002
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posted 05-30-2003 04:27 AM
How To Cheat 101; 
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