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Old 02-15-2008, 09:54 PM
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460 vs 351m

I own a 351m basically stock with edelbroke alum. intake and 600 carb. I'm goin to see about a parts truck tomorrow a 77 f150 2x4 auto. with a 460. My question is this which would have more power and wich would be smarter to use? a used (unknown) stock 460 or my current 351m. i know the 460 is a way better base to work off. but this 351m (other then this timeing chain thing) has been reliable for past year or 2.

thanks
billC

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Old 02-15-2008, 10:01 PM
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This is a no brainer. The 460 is 109 cubic inches bigger than a 351. The 351M isnt that popular, but scoring a 460 sure is.
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Old 02-15-2008, 10:15 PM
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It might be worth tearing that 460 down and inspecting / refreshing it ... rings, brgs, and a valve grind. They have a pretty decent reputation, I think, for being strong and reliable.
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Old 02-16-2008, 07:29 AM
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Here is a little song dedicated to the Ford 351M.......Anchors away my friend...Anchors away............No seriously go with the 460 even if it needs rebuilt.
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Old 02-16-2008, 07:34 AM
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There are more readily available pieces for the 460 and it bolts right up to the 351M bellhousing. Seems like a pretty easy decision as long as the 460 sounds and runs good.
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Old 02-16-2008, 09:46 AM
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Ok sounds good folks im off this morn. to have a look. Seemed to me from reading posts in here i was thinking that they were same bell housings but wasn't 100%. haha that almost makes my mind up for me haha
well then what is there interchange able between the two motors .ie carb plugs wires ... cause just did a full tune on the (boat anchor)

thanks
billC
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Old 02-16-2008, 10:26 AM
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It seems to me that some of those 460's used a spread-bore carb, but even if that is the case ... I guess you could use an adapter. 600 CFM is pretty small for a big engine like that ... especially if you're planning to rev it.

The entire distributor is interchangable. Plug wires should be OK, too.

Plugs? I think both of them used ASF42 or ASF52 ... the decal on the valve cover will tell you.

And that case of spin-on oil filters that you have will definitely work, too.

PS.
I politely refrained from calling down the 351M.
(I actually typed, then deleted the words : "Tie a big chain around it and market it as a boat achor.")
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Old 02-16-2008, 07:33 PM
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Hey guys, the M ain't that bad. Not a lot of speed parts for it, but for a grocery getter or a parts chaser it can be tuned to a decent motor. My dad had one in a 73 or 74 Ford and I had a lot of fun with it.
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Old 02-16-2008, 08:06 PM
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Quote:
Originally Posted by "70" Cougar
I own a 351m basically stock with edelbroke alum. intake and 600 carb. I'm goin to see about a parts truck tomorrow a 77 f150 2x4 auto. with a 460. My question is this which would have more power and wich would be smarter to use? a used (unknown) stock 460 or my current 351m. i know the 460 is a way better base to work off. but this 351m (other then this timeing chain thing) has been reliable for past year or 2.

thanks
billC

Ok the 460 wins hands down in the power department..


Now which one would be smarter to use?

Use for what?

Stump pulling ?
Hauling a trailer?
Driving back and forth to work with a carpenters toolbox?
Winning the mobil challenge gas mileage competition?
Driving kids to school?
Picking up chicks ?


What is the end use for this truck ,(bronco? I can't remember what you have)?

One of those 2 motors are better that the other in some areas, and fail in others.

Later, mikey
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Old 02-17-2008, 02:34 AM
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Well its a 79 F250 4X4 4spd 60 rear 44 front 3.55's 5 inches of suspension lift. 36 inch inter-co's 10.5 wide. Ex logging first aid pickup (converted camper) But sad to say the truck i looked at today is poop rotten as the day is long. So no go im still on the look out for a good donor body/maybe a good mill. thanks again folks
billC
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Old 02-17-2008, 08:50 AM
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Well it won't make a good street car no matter what, so go with the 460. If it had some 4:56 gears or even a set of 4:10's ,the 351 would be ok, but you need inches to pull those 3:55's


Mikey
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Last edited by powerrodsmike; 02-17-2008 at 07:59 PM. Reason: clarity
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Old 02-17-2008, 04:17 PM
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460 check

Check the timing chain. look at the distributor rotor and turn the engine back and forth with a wrench on the front crank bolt. see how much slop you have before the rotor moves the stock timing chains used to stretch alot by 30 k miles A new double roller is best. Set it dead on ... the factory retarded the cam for smog.and lost about 30 horses. if you use a stock chain get a 68 t bird crank gear I think it was a c8sb part number prefix
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