351M/400
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Joined: Jun 1999
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351M/400
Does anyone know of a problem with 351M/400 lower end lubrication. I read an article saying that these engines had an inherent problem of crank bearings not recieving enough oil. The article went on to recommend installing a Moroso restrictor kit which basically restricts the flow of oil to the cam thus giving the crank an 25% increase in available oil??? What do you think? Any know of this mod or think that it is necessary???
Cheers!
Matt
Cheers!
Matt
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Joined: Aug 1999
Posts: 7
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351M/400
351c had a real problem with pumping to much oil to the top of the moter and starving the bottom end. ford then came out with the 351m/400m to fix this, they did not resrict the oil form being pumped up but let it drain back to the pan faster. thas is not a real problem tell around 6500/7000 rpms anyway. for a street moter 1500/6000 rpms i don't see that it's necessary.i have a 400m that runs great with 60 psi of oil presser and it is stock with 120 thousand. good luck Dave
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351M/400
>Does anyone know of a problem with
>351M/400 lower end lubrication. I
>read an article saying that these
>engines had an inherent problem of
>crank bearings not recieving enough oil.
> The article went on to
>recommend installing a Moroso restrictor kit
>which basically restricts the flow of
>oil to the cam thus giving
>the crank an 25% increase in
>available oil??? What do you
>think? Any know of this
>mod or think that it is
>necessary???
>Cheers!
>Matt
The 351M/400 has gotten a bad rap when it comes to oiling and most other areas. Unless your really going to spin the engine (not likely in a truck), the stock oiling system works just fine. In fact, unless your going to run a solid lifter cam, I think that you are asking for more problems by restricting flow to the top end.
>351M/400 lower end lubrication. I
>read an article saying that these
>engines had an inherent problem of
>crank bearings not recieving enough oil.
> The article went on to
>recommend installing a Moroso restrictor kit
>which basically restricts the flow of
>oil to the cam thus giving
>the crank an 25% increase in
>available oil??? What do you
>think? Any know of this
>mod or think that it is
>necessary???
>Cheers!
>Matt
The 351M/400 has gotten a bad rap when it comes to oiling and most other areas. Unless your really going to spin the engine (not likely in a truck), the stock oiling system works just fine. In fact, unless your going to run a solid lifter cam, I think that you are asking for more problems by restricting flow to the top end.
