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Carolina Broncos
351/400M Big Block Or Small block - Printable Version

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351/400M Big Block Or Small block - DeTowman - 05-17-2008

Okay all you Ford Gear heads what is the general concenus?? We all know it replaced the Cleveland...Everybody give me your opinion then I'll show you what started this....Thanks


351/400M Big Block Or Small block - broncomania - 05-18-2008

all of my resources have said that the 335 series was based off both small block and big block engines.
and its 351m / 400 there is no 400m .

edit: i read the post you called me about. those guys get bent out of shape quick over this subject .


351/400M Big Block Or Small block - johnpaulgolf - 05-18-2008

:notworthy::rebel:


351/400M Big Block Or Small block - trkbilder - 05-18-2008

Confusedcratchhe: I've always been a small block man! I like the short stroke and tighter revs of the small blocks. Power to weight ratios are another reason I like'em! :xyxthumbs:


351/400M Big Block Or Small block - DeTowman - 05-18-2008

broncomania Wrote:all of my resources have said that the 335 series was based off both small block and big block engines.
and its 351m / 400 there is no 400m .

edit: i read the post you called me about. those guys get bent out of shape quick over this subject .

Yes they do & it's just an opinion.. as I remember from Ford tech school the reason for the M series was the Cleveland had an oiling problem after about 50,000 miles if the owner did not change the oil regularly or changed different brands all the time the oil returns in the heads would sludge shut...Thus holding the oil in the topend....Ford knew of this problem & redesign it and they changed the name to the Modofied series....


351/400M Big Block Or Small block - DeTowman - 05-18-2008

trkbilder Wrote:Confusedcratchhe: I've always been a small block man! I like the short stroke and tighter revs of the small blocks. Power to weight ratios are another reason I like'em! :xyxthumbs:

What I mean't by this thread is the 351/400 considered a big block or small block? as for me I like the big block 460 can't beat the torque


351/400M Big Block Or Small block - bucketobolts - 05-18-2008

Actually Ford has never designated engines as small or big blocks like the General and Mopar. They have always been either Y's, FE's, 335's, 385's, or Windsors.

As for the 351M/400, they are a hodge podge of both as previously noted. They have a 4" bore similar to the Windors, but have the same lengths 6.58" rods of the 429/460's or 385's. The canted valve heads will bolt on a Windsor block, but the 335 block shares the 10.300" deck of the 385. The 335's are the only blocks to have been cast with 2 bolt pattern bell housings, the Windsor and 385 trannys.

So I guess you can call them small big blocks, or big small blocksConfusedcratchhe:.


351/400M Big Block Or Small block - SC74 - 05-18-2008

Wow, good timing for this thread so I can figure out what I have now. I've been told what Aaron said - "small big blocks, or big small blocks"


351/400M Big Block Or Small block - DeTowman - 05-18-2008

bucketobolts Wrote:Actually Ford has never designated engines as small or big blocks like the General and Mopar. They have always been either Y's, FE's, 335's, 385's, or Windsors.

As for the 351M/400, they are a hodge podge of both as previously noted. They have a 4" bore similar to the Windors, but have

So I guess you can call them small big blocks, or big small blocksConfusedcratchhe:.

Thanks Arron, that's what I needed......I was on FSB & made the statement that the 400 was a big block they ripped me a new A-HOLE......but in realailty we both were wrong.....


351/400M Big Block Or Small block - broncomania - 05-18-2008

DeTowman Wrote:...but in realailty we both were wrong.....

but atleast you can admit it.
:beer: