351M/400 Performance
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351M/400 Performance
Look what I came across this afternoon you guys.
It is quite interesting for performance oriented people.
http://www.amotion.com/fcm.html
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
It is quite interesting for performance oriented people.
http://www.amotion.com/fcm.html
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
New User
Joined: Dec 2001
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From: USA
351M/400 Performance
Read those horsepower numbers! 480 HP & up on a 400! And to think some know-it-all with a 460 told me the only thing my 400 was good for was to plant flowers in the cylinder bores! 480 horsepower speaks for itself, I think
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Joined: Jan 2002
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From: Chelsea United States
351M/400 Performance
aren't 351c pistons the same as 400 pistons? i could be wrong...
Yes and no. The 351C pistons are identical EXCEPT that they use a smaller piston pin (.912) than the 400 pistons (.975). If you want to use the 351C pistons in your 400, you must have your 400 rods bushed on the small end for the smaller 351C pins. It is a simple and cheap task any machine shop can accomplish for you. - Don
Yes and no. The 351C pistons are identical EXCEPT that they use a smaller piston pin (.912) than the 400 pistons (.975). If you want to use the 351C pistons in your 400, you must have your 400 rods bushed on the small end for the smaller 351C pins. It is a simple and cheap task any machine shop can accomplish for you. - Don
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From: marshall USA
351M/400 Performance
Ok guys...im 17, just a kid right? well i want to build up a 351 m or 400 i have a 351 in my truck now...i have 4 blocks sitting around, three are 351 and one is 400, where do i start and what do i do to get some serious and affordable horsepower with out digging myself a hole? email me or put on the message board, your ideas or expieriences please....thanks...josh
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From: PacNW
351M/400 Performance
> Ok guys...im 17, just a kid right? well i want to build up
>a 351 m or 400 i have a 351 in my truck now...i have 4
>blocks sitting around, three are 351 and one is 400, where
>do i start and what do i do to get some serious and
>affordable horsepower with out digging myself a hole? email
>me or put on the message board, your ideas or expieriences
>please....thanks...josh
If you have 4 "M" blocks sitting around then I'd pick the one with the least taper, the most recent casting date (77 or later) and if possible one from the CF (Cleveland Foundry). All 4 blocks are basically identical so it makes absolutely no difference which one you start with.
While it's down at the machine shop being tanked and magnafluxed go spend some time reading this article on the 380+ Hot Rod magazine 400 buildup for about $2000: [link:home.earthlink.net/~tcrocker/400.html|H R 400 Build]
>a 351 m or 400 i have a 351 in my truck now...i have 4
>blocks sitting around, three are 351 and one is 400, where
>do i start and what do i do to get some serious and
>affordable horsepower with out digging myself a hole? email
>me or put on the message board, your ideas or expieriences
>please....thanks...josh
If you have 4 "M" blocks sitting around then I'd pick the one with the least taper, the most recent casting date (77 or later) and if possible one from the CF (Cleveland Foundry). All 4 blocks are basically identical so it makes absolutely no difference which one you start with.
While it's down at the machine shop being tanked and magnafluxed go spend some time reading this article on the 380+ Hot Rod magazine 400 buildup for about $2000: [link:home.earthlink.net/~tcrocker/400.html|H R 400 Build]
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Joined: Feb 2002
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From: marshall USA
351M/400 Performance
thanks for the article man, but instead of using reverse dome pistons could i use dome topped? or flats? would that be feasable? or insane?
and what is taper? and would it be possible to make this a stroker engine? or is that what the 400 crank is for...
and what is taper? and would it be possible to make this a stroker engine? or is that what the 400 crank is for...
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From: PacNW
351M/400 Performance
>thanks for the article man, but instead of using reverse
>dome pistons could i use dome topped? or flats? would that
>be feasable? or insane?
> and what is taper? and would it be possible to make
>this a stroker engine? or is that what the 400 crank is
>for...
Taper refers to the difference in diameter between the top and bottom of the cylinder. Cylinders wear more at the top than the bottom and more on the "outside & inside" than the "front & back". This is the result of increased combustion pressure at the top which dissapates as the piston travels downward and the rotation of the crankshaft/connecting rod assembly which turns reciprocating motion into circular motion. In order to correct the cylinders they have to be overbored. The less taper you have, the less you have to overbore the cylinders and the more metal you can keep in them.
Flat top pistons are available for the 400. Ohio Piston and Dynagear both carry them.
"Stroking" a 351M results in a 400. Although the 400 came first, the 351M is the exact same engine with a shorter stroke crank and unique pistons. Swapping the crank & pistons results in a 400 cid engine. It is possible to further stroke the 400 but you start getting into some major bux.
>dome pistons could i use dome topped? or flats? would that
>be feasable? or insane?
> and what is taper? and would it be possible to make
>this a stroker engine? or is that what the 400 crank is
>for...
Taper refers to the difference in diameter between the top and bottom of the cylinder. Cylinders wear more at the top than the bottom and more on the "outside & inside" than the "front & back". This is the result of increased combustion pressure at the top which dissapates as the piston travels downward and the rotation of the crankshaft/connecting rod assembly which turns reciprocating motion into circular motion. In order to correct the cylinders they have to be overbored. The less taper you have, the less you have to overbore the cylinders and the more metal you can keep in them.
Flat top pistons are available for the 400. Ohio Piston and Dynagear both carry them.
"Stroking" a 351M results in a 400. Although the 400 came first, the 351M is the exact same engine with a shorter stroke crank and unique pistons. Swapping the crank & pistons results in a 400 cid engine. It is possible to further stroke the 400 but you start getting into some major bux.
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Joined: Sep 2001
Posts: 887
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From: Jax FL
351M/400 Performance
there is a lot of 335 engine building info out here on the web. check out project bronco, and get a good set of book about building these engines. these things will produce power, if you are careful.
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Joined: Jul 2001
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351M/400 Performance
No joke, the 335 series are a great base to build.I have one that is bone stock and i run it at 6000 rpm in my mudbog truck and its still hasnt scatered all over the place.
BOWTIES ARE FOR LIL BOYS!!!!!!!!!!!!
BOWTIES ARE FOR LIL BOYS!!!!!!!!!!!!
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