Nope I read it right.

If you read the article about the ZO6 in Automobile Magazine the cylinderbore liners are touching.

I meant road and track

 

Heh, nevermind your calculator, Ford's bore and stroke measurements have added a phantom .2 liters of displacment (by rounding off the bore and stroke to 3.6 x 3.6, they've pumped up the displacement to 293 cubes, not 281.

I think the correct bore and stroke is 3.550 x 3.552

although a slight increase like that should produce a bit more power (not just added displacement, but improved breathing via unshrouding the valves)

for the mathimatically challenged among us(me included)

http://www.csgnetwork.com/cubicinchdispcalc.html

 

If you'll notice my displacement calculations were off saying that 3.6 and 3.6 would equal 6liters which obviously isn't the case

 

For the 4.6L Mod motor

Bore: 90.2mm ( 3.551" )
Stroke: 90.0mm (3.543" )

Displacement: 4.60L ( 280.76 CID )

 

I doubled the wall thickness because you have to count the size of both bores.

 

Unfortunately that's not the way it works.

Think of it this way.

The bore center is 3.937"
The bore is 3.70"

So there are 2 cylinder holes 3.7" dia. spaced 9.37" apart.
The cyl radius is 1.85"

3.937 - 1.85" (1/2 cyl 1) - 1.85" ( 1/2 cyl 2) = .237" between the cyl walls.

 

So it's not like this then????

BTW the depiction of 3.70 is off it should be diameter of the bore

 

Sorry, but you have it wrong.

Your .237" dimension is WRONG, it is really .1185"

A 3.70" bore CENTERED in a 2.937 bore spacing has only .1185" all the way around it, NOT .237" !

 

I didn't really give it much thought (as to your calc and admitted error), however I found it interesting that the Ford spec page just rounded the bore and stroke off to the tenth which added more than a few cubes to the 4.6 as they printed it.

 

I'll try and remeber that 3.551 x 3.543

 

Thanks for the correction I see where I am wrong now

 

Yea, I love whole #s too.

 

:bang: :bang:

Wow, I can just barely follow that. I guess my math knowledge is leaving me as I get older. At this rate I will have to start taking my shoes off to count in another 30 years.

 

My gut is telling me that they are going to SuperCharge the 4.6
My second guess is that they are going to offer a 5.4 with 350-385hp. That might be SC as well.

I really don't see Ford investing too much into these SE projects.

 

Are you thinking a S/C 3 valve engine or will the the 03-04 Cobra 4.6, 4V S/C engine be resurected?

I agree with you, Ford will not spent much $$ on any of these SEs. Ford has far larger problems than worring about SEs that will sell less than 10,000 units / year. GT-500 fills the need for an image / halo car. The only way we'll see other SEs like a Mach 1, GT-350, Boss is if they can figure out how to make a profit on them given their low volume.

 

I'm thinking a SC 4.6 3V. Some people on here say "No Way!". Please tell me why it wouldn't work?
The AfterMarket SC's seem to be doing great on the new Stangs.

Dropping a SC on the 300hp 5.4L would be easy too! Or at least modifying it enough to get in the 350hp range.

I'll take either motor, as long as its between 350-400hp. Although I would rather have a 5.4L

I don't plan on doing any road course racing, and Ohio is pretty flat, so as long as I have a Stang that can match or beat my friends GTO, I'll be happy!

 

The purpose of this thread was to detail our opinions on a Boss 302.

My opinion is that extra power is great but wider, lighter wheels and tires as well as better handling and a lower gear say 3.73 or 3.90 with minor 20ish hp increases would be perfect for the Boss.

An SC would be great for a Mach which seems to me to be more of a Drag Race Power Hungry Car.

 

Well, the point is the 03-04 Cobra engine ( 4.6, 4V, S/C ) is fully developed and tested. The only cost in putting it in a future SE is the cost of emissions and EPA mileage testing (assuming that it can meet 2007 and beyond emissions requirements with little effort).

Although manufacturing cost of a 4,6, 3V S/C will be lower than the 03-04 Cobra engine, it will take a fair investment in engineering, development & testing to make such a new engine production & warranty ready.

Same with a 5.4, 3V, N/A. That engine is in production. All it would take to put it in a Mustang is to do some computer tuning to get the HP up for a Mustang application, along with EPA testing. 350 HP should be a no brainer out of a 5.4L, 3V, N/A engine.

Ford will not spend a lot of $$ developing more SEs. Presently Ford just can't afford to do it and developing any new engine, even if it's just a new combination of existing parts really chews up the development budge.

 

I would totally love to see a Boss 302. If it looks similar do Burningman's (Doug) Twister, It will sell better than the Shelby.

 

I would definitely agree, that would make one sweet SE!!! :worship: