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marshall_mosty
12-11-2006, 01:42 PM
Just wanting to throw some info out there... don't know if it's true. Maybe someone who has done the swap (Varner, Bell??) can clarify??

The 1993-1995 SVT Cobra Cam:

209/209 @.050 .451/.451 with a 118 Lobe Seperation (1.6 Rockers)

209/209 @.050 .479/.479 with a 118 Lobe Seperation (1.7 Rockers)

AI#97
12-11-2006, 03:32 PM
That's is a small weak ass cam!!! and a 118 LSA??? Geesh, were they going for less emissions or what?!


Need something NASTY in the .570 lift range with OVER 230 duration and a 108 or 107 LSA if you want some power?! :wink:

GlennCMC70
12-11-2006, 03:57 PM
damn Matt, this is a question for a CMC car for like his brother, not himself. :roll:

AI#97
12-11-2006, 04:51 PM
damn Matt, this is a question for a CMC car for like his brother, not himself. :roll:

OR...CMC-2? No wonder those CMC cars can't breathe over 4000rpm....they got little bitty cams!

GlennCMC70
12-11-2006, 04:54 PM
.450" .460" 202 207 116
LT1 specs :oops:

AI#97
12-11-2006, 06:32 PM
.450" .460" 202 207 116
LT1 specs :oops:

Well, hell! There's your restrictor!!! LOL! That thing belongs in a tractor...NOT a racecar! :lol:

I was actually looking at a set of new cams for my car the other day but something told me to stray away for now! .620/.630 235/230 on a 106 LSA....problem is they require a LOT of piston surgery and a $600 set of valve springs!!! All in name of 400rwhp out of 300 cubes and 7500 rpm!

Maybe I need to go down to CMC?!!! :shock:

GlennCMC70
12-11-2006, 07:00 PM
my street car runs a 232/240 .600" lift 112 LSA cam. your AI car is a puss.

AI#97
12-11-2006, 08:33 PM
my street car runs a 232/240 .600" lift 112 LSA cam. your AI car is a puss.

And how many cubes does that "street" car have...? 383? I am sitting on 300 and the cams that are in the car now aren't much smaller than the specs I gave! :wink: Atleast mine doesn't weigh 2 full tons!!! :lol:

I did see an interesting crate motor in my latest jeg's catalog last night.....LS2 crates with carb intakes....can't remember the price but would be a great "class" motor for TSRS cars or NASA stock car class!

GlennCMC70
12-11-2006, 09:19 PM
383? nope. 347. but hey. i've driven it many many miles on the street. its not a track only car. if it was AI car, you would hate life.

GlennCMC70
12-11-2006, 09:20 PM
Marshall, i'm intrested in what you find out as i'm keeping a speadsheet w/ all the legal cam specs on it.

AI#97
12-11-2006, 10:36 PM
if it was AI car, you would hate life.

Not if YOU are driving it!!! Zing!!!!! :lol:

J/k....I guess it was the guy in TT that I was thinking 383.....? :?

GlennCMC70
12-11-2006, 10:37 PM
yep. Kevins car was a 383 w/ well over 500 Hp @ the wheels. much bigger cam. 245 dur w/ like 650 lift.

AI#97
12-11-2006, 10:51 PM
yep. Kevins car was a 383 w/ well over 500 Hp @ the wheels. much bigger cam. 245 dur w/ like 650 lift.

Yeah, if racing falls off my "to do" or "can be done" lists....I am thinking C5 vette for a fun daily...might need to talk to you LS1 boys about how to make some Powa!

Mike Bell
12-12-2006, 07:33 AM
Here's the specs I found:

Cam specs: Duration: 227°/Intake & 270°/Exhaust
Lift: .485/.485 Intake/Exhaust
Lobe separation: 118.5°


Cam says "GT" on it, no part number from Ford that I could find. I would think the CMC National Directors would be the source for this info if you want the "official" ruling - the info I provided above is from the SVT website and is about as "official" as my opinion lol.

GlennCMC70
12-12-2006, 08:11 AM
those look like advertised durration numbers. look for durration @ .050" lift.

Mike Bell
12-12-2006, 09:26 AM
those look like advertised durration numbers. look for durration @ .050" lift.

You talking to me? :?:

GlennCMC70
12-12-2006, 09:28 AM
yes.

Mike Bell
12-12-2006, 09:37 AM
Why is this directed at me Glenn? Am I supposed to be doing something on this? I posted what I knew on the topic, that's all I know about Cobra camshafts.

GlennCMC70
12-12-2006, 09:49 AM
advertised duration numbers are not the standard format of refering to a cams duration. reason is because all manufactures use a different lift point to rate duration. so to counter this, the duration @ .050" lift was put into use as a way of compairing cam specs on an even playing field. Marshall posted what he thought was correct and those numbers look to be in duration @ .050" lift format. the numbers you posted are most certainly not. so its a little missleading to those who dont know. the specs you posted and Marshall posted could very well refere to the very same cam.

if you dont know the duration @ .050" thats fine and all that was needed to be said. i was simply stating that those numbers are not in the same format Marshall was looking for and not to be compaired to those you posted. i just did a search myself and couldnt find it. i was hoping that you could refer back to the location you found the advertised duration numbers and look and see if they listed duration @ .050".

the reason i'm intrested is i'm putting together a tech book full of things like this. i have the 3rd gens started and 4th gens about done. this info will be available to everyone @ the track for all to see. if you want to look @ what i have, just find me.

Mike Bell
12-12-2006, 09:56 AM
Glenn, as I said in my first post on the topic the info I had was from the Internet. I also recommended getting with officials for the ruling. Asking me is worth squat when it comes to rules enforcement.

Mike Bell
12-12-2006, 10:28 AM
OK, found another Internet source (in French! lol):

5.0L Cobra F3ZE-6250-CA Hydraulic Roller .479 .479 270 270 209 209 118

209 is the duration @ 0.050 lift according to the source:
http://www.angelfire.com/theforce/racingsvt/specmoteur.htm

Scroll down to the middle for the section titled "SPÉCIFICATION DES ARBRES À CAME"

(I'd ask Tony G for a ruling lol)

GlennCMC70
12-12-2006, 10:57 AM
nice find Mike.

macstang
12-12-2006, 08:27 PM
From the official Mustang 5.0 tech reference and performance handbook (Kirschenbaum):

F3ZE-CA
lift .282/.282
1.7 ratio .479/.479
duration 270/270
overlap 33.5
lobe center 115 intake/ 121.5 exhaust

Compared to the HO 5.0 grind, this cam produced more torque, and less HP.



data gathered by Ford powertrain systems engineer W.E. Beaber.

This info may agree with other postings, but I am just posting it in order to have another source.

Rob Liebbe
12-12-2006, 09:04 PM
Compared to the HO 5.0 grind, this cam produced more torque, and less HP.



My recolection from driving a 93 5.0 and a 93 Cobra back-to-back was just the opposite. Must be the affect when combined with all the other components - heads, intake, MAF meter, computer, etc.

I have a complete 93 Cobra drivetrain in my other car - maybe a swap is in order.