351W rebuild problems
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351W rebuild problems
How do you tell the difference between the blocks of the 351W the one piece rear main seal vs the two piece rear main seal? I guess the crank is different, is anything else ie flywheel, clutch, etc????
We are stuck, the machine shop appears to have given us a different block that the crank etc that we have purchased new was ordered based on the two piece rear main seal block and appears we now have a one piece. would like to know what to look for before I go back in...
We are stuck, the machine shop appears to have given us a different block that the crank etc that we have purchased new was ordered based on the two piece rear main seal block and appears we now have a one piece. would like to know what to look for before I go back in...
Last edited by freefallin; Jul 15, 2007 at 02:13 PM. Reason: Clarification
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Welcome to FTE
351W: Beginning on 7/11/1983, the rear main seal went to a one piece design. The block and crankshaft also were changed on this date.
Information Source: 1980/89 Ford Light Truck Parts Catalog. 351W Engine Section 60.5; Pages 1 & 13.
351W: Beginning on 7/11/1983, the rear main seal went to a one piece design. The block and crankshaft also were changed on this date.
Information Source: 1980/89 Ford Light Truck Parts Catalog. 351W Engine Section 60.5; Pages 1 & 13.
Last edited by NumberDummy; Jul 15, 2007 at 02:39 PM.
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FTE has engine forums for topics like this 
Maybe visit the forum that relates to the 351W.
https://www.ford-trucks.com/forums/forum55/
The 73-79 truck never had this engine in them.
Maybe visit the forum that relates to the 351W.
https://www.ford-trucks.com/forums/forum55/
The 73-79 truck never had this engine in them.
