Brought to you in part by:

.


Tools and Supplies at Eastwood

  Mustangsandmore Forums
  '64 1/2 to '73 -- The Classic Mustang
  Decoding my 351

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Decoding my 351
catman_45
Journeyman

Posts: 54
From: Moscow, ID, USA
Registered: Jan 2002

posted 03-23-2002 03:36 PM     Click Here to See the Profile for catman_45   Click Here to Email catman_45     Edit/Delete Message   Reply w/Quote
Well I finally picked up my Mustang, drove it from North Dakota to Lake Havasu, AZ, and then back up to Idaho. While staring at the engine so many times, I was wondering how to tell if it is a 351 Windsor or Cleveland. The guy I bought it from said Windsor, but he owns an exhaust shop and didn't even notice the cracked exhaust manifold Anyway, most people who saw the engine couldn't tell if it was W or C code, but the spark plugs in that beast are huge, had to use a 13/16 socket on them, and the dude at Checkers claims that it has to be Cleveland because of that, but then another mechanic (replacing my vacuum advance on the distributor) said that some Windsors had those plugs. So I was hoping for some info to help my find out for sure what the engine is. Thanks for the help.

------------------
1966 Coupe w/ 351 Windsor, BM Slap shifter, aqua blue, dual exhaust with turbo mufflers

IP: Logged

ewokeric
Gearhead

Posts: 159
From: woodbridge, va united states
Registered: Mar 2002

posted 03-23-2002 04:19 PM     Click Here to See the Profile for ewokeric   Click Here to Email ewokeric     Edit/Delete Message   Reply w/Quote
i have a 351 windsor and my spark plugs are big as well. I do remember reading in finding our what mine was is the cleveland had 14mm spark plugs not the 13/16. hope that helps

IP: Logged

Fastymz
Moderator

Posts: 8516
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 03-23-2002 04:27 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
If the top rad,hose gose to the intake manifold,and not the engine block.Then it's windsor.The 351w intake looks just like the 302 but is more wide.
And my 69 351w uses the large plugs too.
And both sides of my exh manifolds were cracked too.The guy cracked them both when he put the motor in my 65.

SCOOP

------------------
65 coupe,Big Boss 429 hood scoop,Crager SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

[This message has been edited by Fastymz (edited 03-23-2002).]

IP: Logged

SteveLaRiviere
Administrator

Posts: 30097
From: Saco, Maine
Registered: May 99

posted 03-23-2002 04:28 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
All Clevelands use 5/8" spark plug sockets. They also have 8 bolt valve covers and the thermostat housing is on the block. Also, the bolt and stud holding the fuel pump are vertical.

Older 351Ws use 13/16" spark plug sockets, {newer ones use the smaller plugs, I'm not sure of the year it switched} have 6 bolt valve covers, the thermostat housing is on the intake manifold, and the bolts holding the fuel pump are horizontal.

------------------

'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip

MCA Member # 47773

I love being married. It's so great to find that one special person you want to annoy for the rest of your life.

IP: Logged

catman_45
Journeyman

Posts: 54
From: Moscow, ID, USA
Registered: Jan 2002

posted 03-24-2002 12:48 AM     Click Here to See the Profile for catman_45   Click Here to Email catman_45     Edit/Delete Message   Reply w/Quote
Ok, thanks for the info guys, my engine is a Windsor. I got her up to 110 before I got scared in New Mexico. Can't wait to tear her apart.

------------------
1966 Coupe w/ 351 Windsor, BM Slap shifter, aqua blue, dual exhaust with turbo mufflers

IP: Logged

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2003, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[The M&M Gearhead Gear Store]

[Build a free Mustangsandmore.ws Home Page!]

[About M&M][Acronym Guide][Calendar of Events][Chat Room][Classified Ads] [Links]

[Members' Photos] [M&M Mug Shots] [Technical Articles][Ford Parts Number Deciphering

[ Mustangsandmore.com Bookstore] [Advertise on Mustangsandmore.com] [Mustangsandmore.com T-Shirts]