Motor Identification

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Jan 14, 2017 | 01:11 PM

Grove

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Motor Identification

I recently bought a 79 ford F150 with Ranger trim and emblem on both front fenders. It has only had 2 owners. This truck does not have a stock motor or transmission however I do not know where to identify what motor it is. I know it is a 351W or 351M. How would I go about finding out what motor it has?

Jan 14, 2017 | 01:37 PM

BigSexy78

Junior User

Joined: Dec 2016

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This should help you.

Ford V8 Engine Identification - FORDification.com

Jan 14, 2017 | 02:04 PM

Grove

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Joined: Jan 2017

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Quote:

Originally Posted by BigSexy78

This should help you.

Ford V8 Engine Identification - FORDification.com

That answered my question, I appreciate it.

Jan 14, 2017 | 02:32 PM

CelticOne

Regular User

Joined: Sep 2014

Posts: 1,798

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From: Bathurst, New Brunswick

Quote:

Originally Posted by Grove

That answered my question, I appreciate it.

So what is the answer???

And where are the pics???

Jan 14, 2017 | 02:36 PM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

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From: NorCal

Quote:

Originally Posted by CelticOne

So what is the answer???

And where are the pics???

Don't ya hate it when they don't follow up?

Jan 16, 2017 | 09:34 AM

Grove

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Sorry I did not follow up until now I'm still getting familiar with the forum. I counted 8 bolts on the valve covers so apparently this would make the motor a 351M.

Jan 16, 2017 | 09:42 AM

77&79F250

Moderator & parts slinger

Joined: Feb 2007

Posts: 50,145

Likes: 5,782

From: S/W Missouri, Polk county

Welcome to FTE. Here is another place to get familiar with engine ID and it is "in house". That other linked one from BS78 is very informative also.

https://www.ford-trucks.com/forums/1...ml#post1485519

And here is another aewsome info source. https://www.ford-trucks.com/forums/1...mpilation.html

And one of my faves. lol https://www.ford-trucks.com/forums/1...then-some.html

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Jan 18, 2017 | 06:55 AM

Grove

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New User

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Quote:

Originally Posted by CelticOne

Thanks for coming back and updating the thread. Post some pictures of the truck and engine and you will get much more info/feedback. Plus we like pictures of old

trucks

Yep, sure thing i'll post some pictures when I get home from work.

Jan 18, 2017 | 03:31 PM

#10

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 784

From: Simi Valley, CA

Quote:

Originally Posted by Grove

I counted 8 bolts on the valve covers so apparently this would make the motor a 351M

You cannot go by the number of valve cover bolts to ID the engine size.

8 valve cover bolts per side: 1970/74 351C (only factory installed in cars); 1971/82 400; 1975/82 351M. Your 1979 F150 could have come w/a 351M or 400.

If your 1979 F150's block casting number prefix is D7TR .. it's a 351M or 400 from a 1977/79 F100/350 or 1978/79 Bronco.

You'll have to measure the stroke to determine whether it's a 351M or 400. Stroke: 351M = 3.50" / 400 = 4.00."