Simple engine modifications

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May 14, 2014 | 08:19 PM

#16

InvincxbleDan

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From: Coarsegold, CA

Okay, I understand now.. Thanks for your input!

I'm going to put all of this into consideration when I build it up. Just going to be little mods for now..

May 14, 2014 | 09:52 PM

#17

77&79F250

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From: S/W Missouri, Polk county

Straight up timing will wake it up to and since you are in there install a aluminium intake.

May 14, 2014 | 10:00 PM

#18

InvincxbleDan

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From: Coarsegold, CA

What exactly do you mean by straight up timing?

May 14, 2014 | 10:11 PM

#19

77&79F250

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From: S/W Missouri, Polk county

Instead of the timing be "retarded" for SMOG reasons by Ford way back when, by something like 8 degrees? I might not be exact on the terms or explaniation of this exactily but....

You can get a new timing set gear and chain (double roller?) and get the timing set back to "straight up" or no retardation. I hear that will wake up that 351M alot.

I think you need a timing set for a 72 or 73 400? A advanced thread search will get you some info on it, I do not know the exact part #, I myself have NOT done this mod.

I am sure the 351M links in the other threads above have the part #'s you need.

May 14, 2014 | 10:16 PM

#20

InvincxbleDan

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From: Coarsegold, CA

Well, cool. Thanks! Your explanation is better than whatever I can come up with haha

May 14, 2014 | 11:18 PM

#21

Westcoast Highboy

Tuned

Joined: Nov 2013

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From: British Columbia

There is only so much you can do with the 351M platform. They were never great performers even when brand new.

In all seriousness, as all ready mentioned, you may want to consider building up a 460 or 429 as it will bolt right up to your transmission.

Same horrible gas mileage but twice the power and torque. Also lots more aftermarket support and cheaper (relatively speaking) in the long run....

You can buy a junkyard 429 or 460 and build it at your leisure and just keep running your 351M for now. Once the new motor is built, drop it in and hang on!

May 14, 2014 | 11:24 PM

#22

InvincxbleDan

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From: Coarsegold, CA

Why must the 351M be such a poor performer

May 14, 2014 | 11:49 PM

#23

77&79F250

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From: S/W Missouri, Polk county

Its NOT, well maybe a little, but over all it workable, is just has a bad reputation, ck out those links....

Change the crank to make it a 400 and be happy.

History of the Ford 351M

M-Block 351M/400 Parts Reference

351M/400 Performance Build Up

Rumors & Myths

Prove them naysayers wrong!