Help 351w ID
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Joined: Aug 2011
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From: Orrtanna,pa
Help 351w ID
Hello everyone this is my first post on this website. I need to know if my engine is a 351w or a 302. I have an 86 f150 (partially, mostly f350) and the original engine was a 302 but the guy I bought the truck off of said he put a 351w in it. Here is the block casting number: e4ae-6015 and then It says fa-19. I know it is an 84 block but don't know how to tell if it is a real 351w.
Moderator
Joined: Nov 2007
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From: Denver Metro Area, CO
Welcome to FTE. 
There is some help for your particular questions here in the Sticky:
Ford Truck Enthusiasts Forums - View Single Post - '80-'86 Tech Tips, Tricks and Projects:
There is some help for your particular questions here in the Sticky:
Ford Truck Enthusiasts Forums - View Single Post - '80-'86 Tech Tips, Tricks and Projects:
Senior User
Joined: Apr 2004
Posts: 152
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From: Southeast GA
You can also look at the spark plug wires. 302 firing order is 15426378. That means the 2 plugs closest to the firewall on the drivers side will be two spark plug wires right beside each other at the distributor cap ( a common problem with 302's as the 2 cylinders fire one behind the other and it's easy for the plug wires to 'leak' and fire between one another...just fyi). 351 firing order is 18436572 so number 7 & 8 spark plug wires are not one behind the other like a 302.
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