Building Up A 351M.

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Sep 4, 2012 | 09:43 AM

#31

460 FORD MAN

Posting Guru

Joined: Jul 2012

Posts: 1,958

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From: Georgia

Quote:

Originally Posted by keiths78f150

Idk what the hell I want. I am going to buy a 460 this weekend. Ill decide later haha

Hell yeah

Sep 4, 2012 | 09:53 AM

#32

KingBigJoe

Cargo Master

Joined: Jan 2012

Posts: 2,654

Likes: 1

From: Northeast Indiana

Well, here is what I would do if it is mine. I'd keep the 351M or make it into a 400 & put a 4BBL intake & carb then do dual exhaust (fortunately one the previous owners did that to Rustoleum already [Less money to drop into her

]) . But, overall its your truck do what you want. But, we will be happy to give opinions !

Sep 4, 2012 | 11:03 AM

#33

keiths78f150

Thread Starter

Laughing Gas

Joined: Jul 2012

Posts: 1,123

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From: Southern Illinois

Well it has dual exhaust, but I am going to replace all the tubing and mufflers for the sake of my addiction to wanting everything to be perfect. I already bought Flowtech long tubes, just havent installed yet. I will probably either turn the 351 into a 400 (crank and pistons), put a 4bbl carb and intake, new camshaft or buy this 460 and build it perfectly for the next couple of years and swap it at a later date. If I do that, Ill just put the headers on it to give me a decent sounding truck. Who the hell knows. I am so figgin torn. idk wtf to do haha

Sep 4, 2012 | 11:05 AM

#34

77&79F250

Moderator & parts slinger

Joined: Feb 2007

Posts: 50,189

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From: S/W Missouri, Polk county

Here is a little good info on the 351M

History of the Ford 351M

M-Block 351M/400 Parts Reference

351M/400 Performance Build Up

Rumors & Myths

Sep 4, 2012 | 11:50 AM

#35

keiths78f150

Thread Starter

Laughing Gas

Joined: Jul 2012

Posts: 1,123

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From: Southern Illinois

Besides linking me to TMeyer INC again, can someone just link me a proper crank and pistons to order?

Jan 10, 2013 | 06:58 PM

#36

Rob Cuenin

Senior User

Joined: Dec 2004

Posts: 438

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From: Palm Bay,Florida

Off topic but the performance build up link above said you must change the harmonic balancer if upgrading to 400 crank(use 400 balancer). I bought a 400 long block but I used the 351 balancer. Should I switch to 400 balancer ? First I've ever heard of this but I'm by No means an engine builder. Any comments? sorry 4 the high jack of thread

Jan 12, 2013 | 08:56 PM

#37

79F150400M

Fleet Mechanic

Joined: Feb 2004

Posts: 1,509

Likes: 332

From: Arlington,Wa

A Comp Cams 268, Edelbrock Performer and a Carter 625 with headers can really wake up a 351M....AND you'll have dudes asking you if its a 390!! LOL. That's my experience with it. Oh....and you should convert your rocker arm bolts to screw in studs and Crane has a kit for that. Easy to do, all the instructions are provided.

Jan 13, 2013 | 06:28 AM

#38

Filthy Beast

Postmaster

Joined: Mar 2011

Posts: 2,698

Likes: 7

From: Taxachusetts

"Off topic but the performance build up link above said you must change the harmonic balancer if upgrading to 400 crank(use 400 balancer). I bought a 400 long block but I used the 351 balancer. Should I switch to 400 balancer ? First I've ever heard of this but I'm by No means an engine builder. Any comments? sorry 4 the high jack of thread"
Short answer - yes, they are different