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Would a 351c be a direct swap?

  • Thread starter Thread starter vdubsta
  • Start date Start date Oct 19, 2004
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vdubsta

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#1
  • Oct 19, 2004
  • #1
in my 67 mustang. I have a 289 w/ auto. Would it be a direct swap, on motor mounts, and bolt into the trans?
 
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Old Blue

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#2
  • Oct 19, 2004
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have wondered this myself for quite a while. i had always guessed it would be close to a direct swap since they are both sbf's, but you know murphys law...
 
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vdubsta

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  • Oct 19, 2004
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Also. If I happened to find a 351c 2v, how hard will it be to convert to a 4v?
 
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nds03

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just get a 4v intake for a 4v carb. i dont know about a cleveland fitting in there, but im sure it could be done
 
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Opentracker

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#5
  • Oct 19, 2004
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Yes it will bolt right in. Same mounts and all. You will need new headers and a bigger radiator to start with. I have seen several '67-'68 cars with Cleveland motors. They are very fast.

John
 
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slackr

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#6
  • Oct 19, 2004
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The only thing you would have to consider is accessories....get the brackets for the 'c'.... as Opentracker said, motor mounts and tranny will bolt up.
If an FE fit in there, then I'm sure the 'c' will.

You might want to qualify your question with regard to converting to a 4v, as nds03 said, you can just put an intake and carb on it w/the 2v heads.... but there is a difference between the 2v and 4v heads if you want to go that route.
 

Hack

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Mar 23, 2004
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#7
  • Oct 20, 2004
  • #7
vdubsta said:
Also. If I happened to find a 351c 2v, how hard will it be to convert to a 4v?
Click to expand...
You would need to replace the heads, intake and exhaust manifolds at a minimum (assuming you already have a 4 barrel carb). You'll probably want to replace the entire exhaust. If you're converting to a 4V, you'll also want to make some other modifications, depending on your final goals.

Probably looser stall converter, cam, bigger carb... I would imagine you'd want to consider the build completely so that you will be happy with the results. Look here for 351C Q&A and build info.

http://www.network54.com/Forum/119419
 
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5.0ina66

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#8
  • Oct 20, 2004
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Hack said:
You would need to replace the heads, intake and exhaust manifolds at a minimum (assuming you already have a 4 barrel carb). You'll probably want to replace the entire exhaust. If you're converting to a 4V, you'll also want to make some other modifications, depending on your final goals.

Probably looser stall converter, cam, bigger carb... I would imagine you'd want to consider the build completely so that you will be happy with the results. Look here for 351C Q&A and build info.

http://www.network54.com/Forum/119419
Click to expand...

Not necesiarly. The most common C street combo I've seen is a 2v 351C with a 4v intake. If you go that route, you'd need to1 buy an aftermarket 4bbl intake that says "designed for 2v heads", as 2v and 4v heads have different port shapes. A lot of people who run Cs in their cars prefer the 2v head\ aftermarket intake combo to retain low-end power, as 4bbl C heads have huge ports and huge valves, which make for very poor low end.
HTH
--Kyle
 

Hack

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  • Oct 20, 2004
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5.0ina66 said:
Not necesiarly. The most common C street combo I've seen is a 2v 351C with a 4v intake. If you go that route, you'd need to1 buy an aftermarket 4bbl intake that says "designed for 2v heads", as 2v and 4v heads have different port shapes. A lot of people who run Cs in their cars prefer the 2v head\ aftermarket intake combo to retain low-end power, as 4bbl C heads have huge ports and huge valves, which make for very poor low end.
HTH
--Kyle
Click to expand...
2V and 4V on a Cleveland generally refer to the heads, not the carb. If he just wanted to go to a 4 barrel carb, I expect he would have asked that question instead.

Your statement about 4V C heads is incorrect. 4V C heads make good low end. Their upper rpm power is just so good that the low end doesn't seem as good in comparison. Ford put 4V Clevelands in a lot of large cars, and they worked just fine. A 4V Cleveland in an early Mustang will have plenty of torque for the street. It's not like you will have a problem breaking the tires loose.
 

ratio411

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Apr 21, 2002
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Oct 20, 2004
#10
  • Oct 20, 2004
  • #10
Here we go again...

Myth: 4v Clevelands have poor bottom end.

The swap is extremely easy.
I did it on a Maverick and used most of my brackets too... with very slight mods.
Check into it, but I believe that 70 Stang headers for a Cleveland will fit a 67-69 car too. Snapping up a cheap used set to find out would save alot of dough over buying swap headers.
Good luck
Dave
 
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nds03

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#11
  • Oct 20, 2004
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if theres that much to it then just find a 351c 4v
 

TBP

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#12
  • Oct 20, 2004
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My 67 currently has a 351 Cleveland in it, and it fits quite nicely. Considering that it originally had a 390FE in it the 351 isn't much of a problem.
 
C

cstang68

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Oct 20, 2004
#13
  • Oct 20, 2004
  • #13
I am in the process of putting a 351C in my 68 coupe. If you use the 4V heads then the 70 headers will work, but i opted for 2V heads and went with hooker's swap headers. If you end up going w/ the 4V heads i have a pair of 70 4V headers layin around.
 
6

'69Stang

Founding Member
Sep 28, 1999
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Oct 21, 2004
#14
  • Oct 21, 2004
  • #14
ratio411 said:
Here we go again...

Myth: 4v Clevelands have poor bottom end.


It's amazing.....
Click to expand...
 
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