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Author Topic:   Need help/information please
trbl4u2
Journeyman

Posts: 1
From: Barboursville, W.Va. USA
Registered: May 2003

posted 05-28-2003 12:08 AM     Click Here to See the Profile for trbl4u2   Click Here to Email trbl4u2     Edit/Delete Message   Reply w/Quote
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

posted 05-28-2003 10:02 AM     Click Here to See the Profile for KULTULZ   Click Here to Email KULTULZ     Edit/Delete Message   Reply w/Quote
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

posted 05-29-2003 10:36 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
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

posted 05-30-2003 04:27 AM     Click Here to See the Profile for KULTULZ   Click Here to Email KULTULZ     Edit/Delete Message   Reply w/Quote
How To Cheat 101;

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