351?

would a 351 fit into a 1966 mustang. is it worth to try to fit it

Any 351 will fit, C, M or W. Of those I'd only consider putting in a C or W. Dodgestang, who posts here everyone once and a while has a C in his early Mustang. And if you google MustangSteve he has a bunch of info on installing a W.
Is it worth it? Well, not to be rude, but that is a stupid question. Obviously to Dodgestang putting in a C was worth it. To you? How should I know if its worth it? You don't say anything about your goals for the car, so I have nothing to judge against.
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On 2005-12-21 21:42, jyougmakavel wrote:
would a 351 fit into a 1966 mustang. is it worth to try to fit it
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Yes it will fit but I have to ask you why with today's technology why would you want that big boat anchor in the front of your car...unless you stroke the 351 I just don't see any reason to put a 351 in there. Now if you want a 408 or bigger then go for it. A 66 stang is a pretty small car and has handling issues anyway. When you put more weight up front you just make the problem worse. Build a 347 stroker with all the aluminum parts on it and that will have more then enough power to push that little car as fast as you want to go. You will also thank yourself when you go to work on it because you will have more room to do so.
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347 stroker. Lighter and more room. Big HP also available. Besides everyone will think it's a 289. Even the Ford people.

Yes, a 351 will fit.

Coming from someone with a 66 pony himself, i wouldn't bother. Little enough room with a 289 in mine. I think you have to cut shock towers to get a 351 in it (may be wrong on that), but I will gaurantee you that even if you didn't have to you would want to unless you like pulling the engine everytime you work on it.

I agree with dacofa take a 289/302 and stroke it to a 331/347. you can still get ~400 HP without too much trouble, it will be lighter (making the car handle better. They are already too front heavy.), and you will have more room to work on it.

Now if the plan is a stroked 351 (393/40[img]/phpBB/images/smiles/icon_cool.gif[/img] then it might be worth it.

For me, I plan on taking mine to a 331 or 347 eventually instead of messing with a 351 block in that tight of a space.
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I'm considering the same issue with my 66 of whether to go with a 331 stroker or step up to a 393 stroker, since I have to buy the block either case. In my case I want the following;

Somewhere between 350 - 400 horse and great torque
Streetability that my wife or mom can drive
Most importantly DURABILITY, I would hope for more than 100K miles out of this setup, even with a few 1/4 mile times.

I would rather spend a little more money to insure the durability, including having it balanced and done someone who builds high performance engines. Am I correct the 351 block would be better for this reason?

I just recently got an 05 Mustang that has approximately 280 RWHP and it has got me wanting more. (My 66 had a inline six) Pushing around 400 horse has me concerned how long the 302 stroked will last. This would be the only reason for me to consider the 393 since it could obtain the 400 or greater HP without sacrificing the durability.

But I am also concerned about how this will affect handling characteristics, having the extra 100 lbs up front. I'm considering a coil over front suspension to help up front.

The car will have an electronic overdrive automatic transmission 4r70W with a Baumanator computer control.

This is something I've been back and forth on a lot. So I would appreciate any of you guys experience in the pros and cons of this setup.

msurebel,

If your 66 is a inline 6 car you will have to redo most of the front suspension and get better brakes for sure going to either a 331 or 393. A 331/347 can easily get you the HP and drivability goals you mentioned. But a 351 based stroked (393/40[img]/phpBB/images/smiles/icon_cool.gif[/img] will have a lot more room to go higher without hitting your limits. A 393 puts a lot of weight upfront on a car already very front heavy though.

Either setup is common enough to have no problems getting the parts for a reasonable price. i will say that you can get the same perfrmance out of a non stroked 351 as a 331 or 347 for a lot cheaper, but will have headaches with clearances in your engine bay.

BTW msurebel where are you from? Asking becuase Im a MSU(Mississippi State Uninversity) alumni.

What about durability of the 331 at the ~400 HP? I've read that the durability could be less, especially at this HP. I'm sure it has a lot to do with the workmanship. I would like to hear from those who have seen their 331/347 last a long time at this HP range.

Thanks.

Read the writeup in the tech section here. They build a 400HP 302 and then later stroked it to 331 for durability and better street manners. Noone has had to come back saying that it blew up yet. A 331 will survive for a while as a 400 HP motor, just use good enough gas to avoid detonation and you should be fine unless you are trying to break it.
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