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  #16 (permalink)  
Old 09-09-2006, 05:23 PM
runn141's Avatar
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351W is a smallblock 4 inch bore 3.500 stroke
351C is a bigblock 4 inch bore 3.500 stroke
351M is a big block 4 inch bore 4.000 stroke

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Old 09-10-2006, 12:51 AM
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"351W is a smallblock 4 inch bore 3.500 stroke
351C is a bigblock 4 inch bore 3.500 stroke
351M is a big block 4 inch bore 4.000 stroke"

How did we ever get by without you?
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  #18 (permalink)  
Old 09-10-2006, 01:23 AM
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Quote:
Originally Posted by Brian S
"351W is a smallblock 4 inch bore 3.500 stroke
351C is a bigblock 4 inch bore 3.500 stroke
351M is a big block 4 inch bore 4.000 stroke"

How did we ever get by without you?
hey they ask, i did my best to answer
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Old 09-17-2006, 04:31 PM
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400 Power

I have a 1976 cougar with a 400M. I have always thought the 400 was very underrated when it came to performance. Everyone knows you can put 4V Cleveland heads on it but the knock I always heard was the main journals were not small like the 351C. It has 2.75 in journals and the 400 has 3.00in. meaning more friction. The thing that always confused me is that both 400M and Windsor block have 3.000 in. main journals. The 351 W has become the darling of the Ford set. It is being stroked out to 427 and has gobs of horsepower. What’s the difference? Mine has been overbored.030 and is 408 inches by my calculations. Why is it always regarded as a truck engine suitable only for low-end torque?

Recently I have acquired a set of Australian heads for my engine. I also have a Weiand dual plane manifold and Edelbrock 750CFM Carb. I also have a Holley 600CFM. As you know, the Australian heads have standard (2V) ports and valves. I would very much like to optimize both performance and efficiency without spending a fortune. The most "bang for the buck" idea. Before doing too much, I have some questions.

I intend to port match the heads. I plan to use 1 7/8 headers with 2 1/4 Collectors. I also plan to use roller rockers with 1.7 ratio.


Should I:

1. Use 4V exhaust valves (1.71)?
2. Use 4V Intakes?
3. Use the stock Duraspark or an MSD type ignition?
4. Use a roller cam or dual hydraulic?
5. Polish the exhaust ports?

I have obviously gone to the wrong thread. I'll try again elsewhere.

Last edited by jrkitten; 09-21-2006 at 04:11 PM. Reason: Wrong thread
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  #20 (permalink)  
Old 09-17-2006, 10:17 PM
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Quote:
Originally Posted by runn141
351W is a smallblock 4 inch bore 3.500 stroke
351C is a bigblock 4 inch bore 3.500 stroke
351M is a big block 4 inch bore 4.000 stroke
You're obviously a Chevy guy, and you don't have a firm
grip on math, right? So what is the bore and stroke of
the FE352??

I'll try to use small words so you'll understand, there
are no "big" or "small" block Fords, there designations
are by engine family, Windsors, 335s, 385s, FEs, FTs,
MELs and Modular for the families we are interested
in. Now for the hard part, the late (post '65)Windsors
and 335 series engines share a common bore size and
spacing, meaning you can use the heads from a 335 on
a Windsor block, and vise-versa after preforming a few
modifications...

Oh, and the 351M has a 3.50" stroke, the FE352 also has
a 3.50" stroke, its the 400 that has a 4" stroke...

K
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  #21 (permalink)  
Old 09-18-2006, 04:22 AM
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There is no SMALL BLOCK/BIG BLOCK descriptions in FORD Corporate lingo gentleman. They are catagorized by Engine Families.
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  #22 (permalink)  
Old 09-18-2006, 10:50 AM
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Quote:
Originally Posted by KULTULZ
There is no SMALL BLOCK/BIG BLOCK descriptions in FORD Corporate lingo gentleman. They are catagorized by Engine Families.
Exactly...always cracks me up to hear 351 big block...itc etc. they are familys like stated earlier
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  #23 (permalink)  
Old 09-20-2006, 05:18 PM
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Quote:
Originally Posted by bates_k
You're obviously a Chevy guy, and you don't have a firm
grip on math, right? So what is the bore and stroke of
the FE352??

I'll try to use small words so you'll understand, there
are no "big" or "small" block Fords, there designations
are by engine family, Windsors, 335s, 385s, FEs, FTs,
MELs and Modular for the families we are interested
in. Now for the hard part, the late (post '65)Windsors
and 335 series engines share a common bore size and
spacing, meaning you can use the heads from a 335 on
a Windsor block, and vise-versa after preforming a few
modifications...

Oh, and the 351M has a 3.50" stroke, the FE352 also has
a 3.50" stroke, its the 400 that has a 4" stroke...

K
351M has a 4.00 inch stroke thats why its called 351modified400.........im a little disapointed in you

Last edited by runn141; 09-20-2006 at 05:23 PM.
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  #24 (permalink)  
Old 09-21-2006, 12:36 AM
aka Duke of URL
 
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Quote:
Originally Posted by runn141

351M has a 4.00 inch stroke thats why its called 351modified400.........im a little disapointed in you
HUNH!

The 351M is a destroked 400 (notice no M). It was designed this way to replace the 351C for passenger car/light truck service.

For the FINAL TIME...

The W,C and M descriptions are meant to allow one to differentiate between the three engine series (actually two) with the same engine displacements. How the FE 352 got into this I will never know. It has no bearing on the discussion.

Please stick to your Ghetto Machines and stay away from a subject you have little obvious knowledge in.

This cannot be this confusing gentlemen...
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  #25 (permalink)  
Old 09-21-2006, 01:35 AM
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Basically, the 400 was the same engine as a 351 cleveland, but with a one inch taller deck and larger main journals. Heads, cam, and pistons will interchange. The 351m is the same bore and stroke as a 351c, but in the taller decked (heavier) "400"block platform. This is what renders it a boat anchor. 351 clevelands are bigger than the 351 windsors, but most think the clevelands' head designs negate the windsors' weight advantage. If a person made a clevor with the new edelbrock aluminum cleveland heads, they would have a screamer on their hands.
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Old 11-25-2006, 09:24 PM
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351M vs 351W vs 351C

Now I'm confused. Will a 400 bolt to my AOD tranny ??
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  #27 (permalink)  
Old 11-25-2006, 11:47 PM
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Quote:
Originally Posted by mtnmankev

Now I'm confused. Will a 400 bolt to my AOD tranny ??
YOU'RE CONFUSED!?

I can't understand as how many times this has been explained here that there are still questions...

The 351M/400 has the 429/460 bell mounting pattern and the AOD (SBF pattern) will not go against it without an adaptor. The AOD will go to the 351C as it has the SBF bell pattern.
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  #28 (permalink)  
Old 11-26-2006, 09:11 AM
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You can run a sb Ford tranny on a 400 if you find the ultra rare 1973 400 block that has both sb Ford and 351M and 400 bellhousing cast into it. Otherwise you have to use a 351M-400 or a 429-460 transmission.
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  #29 (permalink)  
Old 11-26-2006, 10:43 AM
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A regular encylopedia of engines here,WOW.... M,C,W,FE, and no one has even mentioned the M.E.L. or the Y,FT and oooooh wait, I was getting dizzy there. Is Ford really communicating with alien beings in these weird coded engine Families??? I saw it on a site somewhere.

I'm outta here, my only post on this... I can be seen over in the other thread, every Evening....first drinks are half price....
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  #30 (permalink)  
Old 12-01-2006, 05:23 PM
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Quote:
Originally Posted by KULTULZ
HUNH!

The 351M is a destroked 400 (notice no M). It was designed this way to replace the 351C for passenger car/light truck service.

For the FINAL TIME...

The W,C and M descriptions are meant to allow one to differentiate between the three engine series (actually two) with the same engine displacements. How the FE 352 got into this I will never know. It has no bearing on the discussion.

Please stick to your Ghetto Machines and stay away from a subject you have little obvious knowledge in.

This cannot be this confusing gentlemen...
Amen brother, preach on, Amen.
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