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Old 04-29-2005, 02:07 PM   #176
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The DOHC motors are pretty powerful from the factory and don't need much to rev high. They already rev/make power to like 6500ish. 5.0's die around 5500. Getting an extra 1000 revs is a lot easier then 2000.

the 4v heads flow pretty well from the factory. The factory forged crank can take the high-rpm's. The DOHC setup dosn't require new pushrods or rockers or anything really. Just cam it and help it breathe a little and it'll make power.

A 5.0 is anemic from the factory, you need heads/cam/springs/intakes, better rockers, better pushrods etc. to spin them high.
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Old 04-29-2005, 02:09 PM   #177
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stockt hey are horrid... lol they peak extremly low .. dont take much though just a good set of AFR heads... if you can save up that kind of money.
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Old 04-29-2005, 02:16 PM   #178
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Quote:
Originally Posted by SpectorV
stockt hey are horrid... lol they peak extremly low .. dont take much though just a good set of AFR heads... if you can save up that kind of money.
exactly..mod fo rmod it takes less mods/money to make the DOHC motors faster than pushrod.

While pushrod is simple and really easy to work on and find parts for, the OEM 4V parts are pretty damn good straight from ford.
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Old 04-29-2005, 03:12 PM   #179
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I DEMAND PICTURES with all of your stuff on it
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Old 04-29-2005, 03:48 PM   #180
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Quote:
Originally Posted by stangin99
exactly..mod for mod it takes less mods/money to make the DOHC motors faster than pushrod.


2v 4.6's without PI heads were also "anemic" from the factory, its all because of the heads (and intake), those motors only made 215 hp and wouldn't turn a dime over 5.5K (at least not make power there)

so blaming a 5.0 for its factory heads is about like saying the 4.6 sucks because the 96-98 models had such ****ty stock heads.
it takes the same mods for an overhead cammed engine to turn a given RPM as it does a pushrodded engine and it has more to do with port velocity, volume, runner length than anything else. all the roller rockers and spec'ed springs do is keep things safe up there.. to which case yeah, those guys with 4v heads have to use special springs too
I agree that it takes more work to get a windsor engine to turn 7.5 K as it does a 4.6 however i don't agree that its because one has over-head-cams, its more along the lines that the 4.6 was designed from the factory to turn higher RPM's and last a while, when doing so, than a 5.0 was really meant to.

arrggg, i've lost my train of thought
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Old 04-29-2005, 04:38 PM   #181
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Awesome, I'm ready for some pics.
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Old 04-29-2005, 04:50 PM   #182
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Originally Posted by silverstangboy


2v 4.6's without PI heads were also "anemic" from the factory, its all because of the heads (and intake), those motors only made 215 hp and wouldn't turn a dime over 5.5K (at least not make power there)

so blaming a 5.0 for its factory heads is about like saying the 4.6 sucks because the 96-98 models had such ****ty stock heads.
it takes the same mods for an overhead cammed engine to turn a given RPM as it does a pushrodded engine and it has more to do with port velocity, volume, runner length than anything else. all the roller rockers and spec'ed springs do is keep things safe up there.. to which case yeah, those guys with 4v heads have to use special springs too
I agree that it takes more work to get a windsor engine to turn 7.5 K as it does a 4.6 however i don't agree that its because one has over-head-cams, its more along the lines that the 4.6 was designed from the factory to turn higher RPM's and last a while, when doing so, than a 5.0 was really meant to.

arrggg, i've lost my train of thought

reading works. DOHC = 4V heads. I am NOT a fan of the 2V OHC motors at all.

and 5.0 guys have to upgrade heads to make good power. The 4V guys don't HAVE to. Not many even really do. The intake manifolds on the cobra motors choke them more than anything. And how aren't springs necessary? Valve float = loss in power and also = damage. YOU can go ahead and rev sky high without upgrading your valvetrain but you won't get far after you break the engine.

And it dosn't take the same mods to turn a a given RPM...a stock cobra makes power to about 6500..a stock 5.0 dies at 5500...what mods are done?
none.

the fact is that a OHC engine has less to worry about when revving high. Pushrods, lifters, rockers all add weight and just more moving parts that can fail at high rpm. putting the cam in the head eliminates all of those factors. Of course any 5.0 could be made to run high rpms and I'm sure many do, however you have to upgrade that whole valvetrain.

so please don't try and prove me wrong when you aren't sure as to what you're talking about.




and enough hijacking Zim's thread.




Congrats, enjoy(I will have a cobra one day as well) and mod that thing
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Old 04-29-2005, 05:39 PM   #183
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Quote:
Originally Posted by ZimStang
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btw guys, THE COBRA IS NOW MINE!!!!!! IM THE OWNER OF A 94 RIO RED MUSTANG COBRA!!! WOOOOOOOT




Awesome!!! Congrats Mike.
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Old 04-29-2005, 05:42 PM   #184
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a STOCK 5.0 peaks at 4800... not 5500 lol
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Old 04-29-2005, 07:14 PM   #185
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Quote:
Originally Posted by SpectorV
a STOCK 5.0 peaks at 4800... not 5500 lol

even proving my point more
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Old 04-29-2005, 07:21 PM   #186
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congrats on the cobra zim!
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Old 04-29-2005, 07:36 PM   #187
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sweet! congrats
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Old 04-29-2005, 10:49 PM   #188
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**** revving to 7..8..9k im not driving a 4banger I like my torque and horsepower band kinda close together, by the time u hit 6500 im in 2nd and almost 3rd.

what im trying to say is, you dont need a high revving motor for street use, unless ur the punk civic driver who has to take it up to the redline so everyone can listen to ur weedwhacker muffler...
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Old 04-29-2005, 10:57 PM   #189
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Mike,

THANK GAWD YOU GOT SUMTHING, I WAS REALLY STARTING TO WONDER HERE!


Congrats to you, and enjoy!

PS: This is the only reason i came to the forum prior to going to bed to see if this had a final ending of your purchase!
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Old 04-30-2005, 08:01 AM   #190
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CONGRATS!

put your rims and other cool stuff on it now!

then take pics

and post them
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Old 04-30-2005, 08:01 AM   #191
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:pnoid:
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Old 04-30-2005, 08:15 AM   #192
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Congrats on the new ride. Can't wait to see some pics, so hurry up!!!

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Old 04-30-2005, 08:41 AM   #193
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Quote:
Originally Posted by stangin99
even proving my point more
DOHC guys done need upgraded heads from the factory to make decent power cuz they were already upgraded at the factory... 5.0s dont have 4v only 2...
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Old 04-30-2005, 09:51 AM   #194
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Originally Posted by SpectorV
DOHC guys done need upgraded heads from the factory to make decent power cuz they were already upgraded at the factory... 5.0s dont have 4v only 2...

you can't say a factory part is an "upgrade", you buy the car knowing what it has and go from there.
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Old 04-30-2005, 03:34 PM   #195
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Hell yeah Zim congrats dude. If anything red is gonna shine 5x better then white ever did believe that.

Now swap everything over (including the nitrous you dont really need to use it asap but it be ****in cool as hell to already have)

Get some pics up man :yup:

Again congrats.
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Old 05-01-2005, 12:56 AM   #196
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Quote:
Originally Posted by SpectorV
a STOCK 5.0 peaks at 4800... not 5500 lol
5200

at least mine does..

my best times were set at 5400 RPM shifts.. I'm guessing thats' around where a cobra 5.0 would be?
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Old 05-01-2005, 11:03 PM   #197
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Hey guys, Im back from St Louis... thats why I didnt post this weekend. Anyway, the car is so much fun... its so fast and Im just having a blast with it. The heads on it are already pretty freakin sweet... they're ported GT40 heads with new valve springs and it defanitely keeps pulling past 5500 RPMS HARD. Also, this motor is so nice because its a BRAND NEW motor with forged pistons instead of the ****ty 94-95 cobra pistons... i dunno what they were, like hyperneumatic or something like that, but they suck. So when the guy built the motor he wanted to defanitely replace those. As for the power, theres no way in hell ill ever get traction in first... I can easily spin all the way through first, all the way through second, and most of third with the 4.10s... its insane. Tommorow Im putting my wheels and headlights on the cobra and Ill wash it up real good and snap some pictures... its purrrty
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Old 05-01-2005, 11:05 PM   #198
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awesome glad you like the SVT, wish I had a built motor.
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Old 05-02-2005, 05:36 AM   #199
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i vote lose the mac catback and pick up borla or slp

those = teh own on a cobra
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Old 05-02-2005, 08:09 AM   #200
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Quote:
Originally Posted by ZimStang
Hey guys, Im back from St Louis... thats why I didnt post this weekend. Anyway, the car is so much fun... its so fast and Im just having a blast with it. The heads on it are already pretty freakin sweet... they're ported GT40 heads with new valve springs and it defanitely keeps pulling past 5500 RPMS HARD. Also, this motor is so nice because its a BRAND NEW motor with forged pistons instead of the ****ty 94-95 cobra pistons... i dunno what they were, like hyperneumatic or something like that, but they suck. So when the guy built the motor he wanted to defanitely replace those. As for the power, theres no way in hell ill ever get traction in first... I can easily spin all the way through first, all the way through second, and most of third with the 4.10s... its insane. Tommorow Im putting my wheels and headlights on the cobra and Ill wash it up real good and snap some pictures... its purrrty

Hypereutectic pistons..

Fully rebuilt motor with GT40 heads.. very very nice find!

Get some nitto drag radials on your car... at 25 PSI you'll have decent traction on the street, and they'll last about 15k miles - 20k depending how you drive they're great on dry roads and fine in the rain til you wear them down too far..
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Old 05-02-2005, 03:15 PM   #201
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i think this thread has run its course !?!
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Old 05-02-2005, 03:20 PM   #202
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i think this thread has run its course !?!
Then let it die.
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Old 05-04-2005, 12:49 AM   #203
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even proving my point more
you made a point? damn I must have missed it!

sure it takes less money to make a 4V 4.6 fast.. but thats because you have to pay an arm and a leg to get one in the first place lol

and you didn't read my post either, never did I say that 5.0 guys don't need correctly spec'd springs.. and you don't listen again, it takes the same to make an OHC engine turn a given RPM's as does flat tappet cams, don't believe me? look at nascar, those bad mother's turn 11K with nearly no complaints a 500 mile race at a time. so yeah, regardless of stock or modified condition a motor needs to recieve the same amount of treatment to get to point A regardless of its cam location in the block, thank god that SVT DOES THIS FOR YOU because I wouldn't wanna see what would might happen if you took your knowledge and aplied it to building your own motor.

[sarcasim]but don't listen to me or anything, its not like I grew up building race car engine's or anything[/sarcasim]
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