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  Mustangsandmore Forum Archive
  '64 1/2 to '68 1/2 -- The Classic Mustang
  351M any good?

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Author Topic:   351M any good?

Posts: 530
From: perry, oh, usa
Registered: May 2002

posted 11-22-2002 08:05 AM     Click Here to See the Profile for senzstang        Reply w/Quote
I have a chance to get a 351M motor cheap (read free). I'm told it is out of a 79 F150 and is a real low horsepower motor. I am familiar with 351 C and W but am clueless on the M version. It would be a project that would sit in my garage until I have the money to do something with it and put it in my 65 fastback. Is it worth grabbing? Can it be put in a 65 or is a boat anchor?

Thanks for your help



Posts: 4511
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 11-22-2002 08:27 AM     Click Here to See the Profile for Fastback68        Reply w/Quote
Boat anchor seems to be the general consensus


Posts: 3394
From: Senoia, G.A. USA
Registered: Jul 2002

posted 11-22-2002 09:06 AM     Click Here to See the Profile for indyphil        Reply w/Quote
There was a 351M and a 400M, they both have big block style bolt batterns, are very heavy, and were made for trucks. Not much use in a mustang


Posts: 76
Registered: Nov 2002

posted 11-22-2002 09:23 AM     Click Here to See the Profile for Snake_Eyes        Reply w/Quote
If itís free why not? Its not as bad as some people think. Put a 400 crank in there and use some 351C heads. Not as simple as it sounds thought. These engines are similar to 351C's and if I am not mistaken there lighter than big blocks. Power can be made with these engines. But lack of information, aftermarket parts, no proven combinations because no one really builds these engines up for performance. Called a boat anchor now but who knows? Simpler to stick with proven engines


Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 11-22-2002 11:27 AM     Click Here to See the Profile for Moneymaker        Reply w/Quote
Not an abundance of performance parts available for the 351M-400 engines. I would not even bother unless you want it for stock rebuilder.

Alex Denysenko
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Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 11-22-2002 12:15 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
They have oddball motormounts so there is no available mounts to put in the stang.Also as stated all but a very few come with a big block bellhousing which may not even fit in a 65.Its just not worth the hassle even if its free by the time you fabricate everything to fit in in your 65 (assuming it will even fit) you could have bought a decent rebuilder engine that will fit easily and have lots of available high performance parts.


Posts: 530
From: perry, oh, usa
Registered: May 2002

posted 11-22-2002 12:45 PM     Click Here to See the Profile for senzstang        Reply w/Quote
Thanks for all the great replies. I'm going to pass. My wife will be happy - one less "project" sitting in the garage!


Tom G

Posts: 1069
From: Bethlehem, Pa USA
Registered: Nov 2001

posted 11-26-2002 07:33 AM     Click Here to See the Profile for Tom G        Reply w/Quote
A boat anchor would be a good use for it!

67 Mustang F/B 302 GT-40X head roller motor 5 speed. Body shop project soon.

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