0
It is a "windsor" (small block) with Cleveland heads (big block).
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Is the 351m small block are big block?
The 351M, is "modified." Windsor motor, with Cleveleand heads. So, I guessd a small block.
Is the bolt pattern the same for a 351M and 351W?
No, the 351m has a big block bolt pattern, and the 351w has a small block pattern, this caused some what of a problem for me seeing as I had 5 spd tranny off a 351w that I wanted to put on my 351m.
Is 351 Cleveland big block?
Windsor 351, is a small block. 351 Cleveland, is a big block. The 351M, stands for "modified" and is a windsor (small) block, with Cleveland (big block) heads.
Is a 351 cleavland a big block engine?
351 Windsor is a small block, 351 Cleveland, is a big block. The 351M, (modified) is a small block, with big block heads on it.
Will a 4 speed manual transmission from a inline 6 bolt up to a v8 302 or a 351?
YES IT WILL THE ONE THING YOU HAVE TO WATCH OUT FOR IS IF THE 351 IS A 351C OR A 351M THESE ARE BOTH BIG BLOCK. THE 302 AND THE 351W ARE SMALL BLOCK SO YOU SHOULD HAVE NO PROBLEM BOLTING IT UP. actually the 351c is a small block and the 351m uses both the small block and big block bell housing bolt pattern
Will 427 fe heads fit 351m block?
NO.
Is the Ford V8 351 a small block or big block?
It depends. There is a 351 Windsor, a small block, a 351 Cleveland, a small block, and a 351 Modified, which is a strange mix of big and small block features. These are referred to as 351W, 351C, and 351M, respectively. The 351W looks just like a 302, only it's a couple inches wider. The 351C has a smaller block than a 351W, but much wider cylinder heads than the 351W. The 351C was offered in both 2 barrel and 4 barrel versions. The 2 b heads had ports a bit bigger than the 302/351W, but the 4b heads had HUGE ports. The Cleveland, although it's quite wide, is still very much a small block. (the block isn't much bigger than a 302's block) And then the 351M.. I refer to these as 351"Mutant", even though the M really means "Modified". This strange 351 has a hellhousing pattern and engine mounts that are interchangeable with 429/460 big blocks, but heads very similar to 351C 2barrel. The block itself is roughly the same dimensions as a 351W. It's more small block than big block, but a lot of guys refer to it as a medium block. Whatever. I just call them Mutants. And there you have it. A real quick way to check is to look at the number of bolts holding down the valve cover. Eight indicates 351C or 351M, Six indicates 351W. Also, 351W valve covers are flat and have a rectangular profile, while 351C and 351M usually have a trapezoidal profile. They never offered the 351C in a truck in the US, only the 351M/(and 400 - a stroked version of the 351M)
351 big block taking out. replacing with 351 small block. will the transmission line up?
There is no such thing as a "351 big block". ALL Ford 351's are considered small blocks, tho the wacked terminology of "351 big block" is mistakenly and continually repeated by the un-knowing and by many who should know better. Ford Motor Company considers ALL 351's small blocks; 351W, 351C, and 351M. Ford made a 352 big block (FE block like 360, 390, 406, 427, & 428). If that is what you meant, no the transmission bolt patterns are not the same. The 351W and 351C both have the same trans bolt pattern but the 351M has a bolt pattern like the 429 and 460.
How do you determine the engine size of a 1978 Mercury Marquis?
should be on a sticker on the underside of the hood or somewhere around the engine bay, if there is none, you can tell because if its not a big block (460) its probably a 351M
Will Ford 460 heads fit on a Ford 400m motor?
no they will not a 400 is a clevland series motor 460 is a 385 big block the only thing that they have in common is distrbutor and transmission bolt padern 460cid Heads will not fit a 400M because the 460cid is a 385 series big block. The 400M is a 335 series big block. The Cleveland motor is a different engine block all together; however the head bolt pattern and passage pattern on the 351M and 400M 335 series motors is identical to the 351 Cleveland. 351C heads will bolt to 351M and 400M motors, as will piston heads and intake. These improvements are great for performance improvements on the 400M, can push horse power from 165 stock to well over 300hp.
Can you put a 1978 Ford 351m in a 1984 Ford truck?
it depends what engine the truck originally had. If the transmission was bolted to a big block (429, 460, 400) then yes, if it was bolted to a 351 windsor, 302, 360, etc. then no it will not. in order to get it to fit you will have to get a new transmission. hope this helps. you may have to engineer some motor mounts as well because i dont believe the 351m was available in 84.
Can you put big block heads on a 351 modified engine?
the 351m/400 are the same engine the only difference is the crank and the pistons. as far as big block heads u can put 429/460 heads on it but u can put a decent set of 4v 351 Cleveland heads on it and a 4v intake with a 4 barrel carb on there then youll have a real torque monster
