From what I've found,
GT(HO) = .444 lift
Cobra = .451 lift
What is the duration for both of these cams?
HO Cam
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Intake - .278" - 276 degrees
Exhaust - .278" - 266 degrees
Cobra Cam
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Intake - .282" - 270 degrees
Exhaust - .282" - 270 degrees
Source: Kirschembaum
Can you get me the specs @.050?
IIRC HO cam durration @50 is 210*I/210*E
Also the HO cam is actually more aggressive than the Cobra cam.
From what I've found the Cobra cam produces more torque then the HO Cam, but the HO has 15ish more hp.
Going from SO to HO cam would I notice a decent increase in power?
How would the SD be with a B303 cam?
HO cam figures are with 1.6 rockers. Cobra is with 1.7.
93 Cobras were rated @235 HP, about 40 HP underated. Different heads and intake were the main reason. A Cobra motor with an HO cam and the Cobra 1.7 rockers would have been an even better combo from the factory IMHO.
Go with the HO cam. Back it up with some 1.7 ratio roller rockers and have a ball!
Well, the bottom end is being rebuilt since it start knocking.
I figure why not do a cam and a stall at the same time?
So, looks like it will be a HO motor without the upper basically, with Hooker Supercomps(Shorties, they were free!!) and a stall rated from 2000-2600.
Should move the pig somemore...:hick:
Anyone know about running a b303 though?
^^^ interested as well i jsut finished the E7 head swap and the HO conversion is next on the list.
My understanding the initial cobra cam was suppose to be more aggressive but the motor idled to lumpy ford built the motor around the 1.7 RR so they wanted a less aggressive cam the cam they chose was the cam commonly put in 91&92 5.0 tbirds and cougars. That’s right the exact cam.
I was just going to say that.... you beat me to it.
That's what I'm running in my cougar...picked up big time...my problem is the 1.7rr's I bought didn't come with shims so they are currently pre-loading the lifters about .120", which is about 4 times too much pre-load...it gets pretty lazy around 3200rpm...I think it'll be much happier when I put the stock rockers back in.
The HO cam was just a poorly designed cam for the E7's due to the fact it has 10* more intake duration than exhaust duration and the E7's have itty bitty exhaust valves...I can tell you that the HO cam runs great with '93 Cobra heads though, courtesy of the larger exhaust valves.
Does anyone know of a way to tell an HO cam apart from an NonHO cam?
firing order. the lobes will be in different spots on the cams
and all I have to do to swap that is swap over a few injector clips and I'll be good to go?
Speaking of cam specs, I don't suppose anyone has the lift, duration, and duration @ .050 information for the roller 5.0 SO motor's cam, do they? Just curious as to exactly how small it is compared to the HO cam.
@ Cam:
Intake: .2375
Exhaust: .2474
X 1.6
Intake: .3800
Exhaust: .3958
X1.7
Intake: .4037
Exhaust: .4206
How would the Cobra cam cmpare to the E303 (I ask because I have an E303)? I'm still waiting to install my E303 in my car.That should help over the H.O cam I'm using now,along with the roller rockers,Mass Air and exhaust,the car should scream.......I hope.
I’m sorry the cam ford designed for the cobra was also put in 93 thunderbird/cougar 5.0 200 HP motor.
Just got done reading it
Swap the cam and computer. The HO computer takes car of the fireing order change. You DO NOT need to change the wiring at the injectors.
Did the SO also come with 1.6 rockers, or 1.5? If the latter, then "y" doesn't even begin to describe the SO cam, given the specs V8Demon quoted!
i just read coolcats cus of the swap i'm doing. aparently you need a MAP sensor also. im glad i read that, cus thats someting i totally overlooked.
they got 1.6 as far as i know. thats a big difference tho. .380 on the SO and .444 on the HO. i didnt think it was that dramatic of an upgrade.
Stock rockers are 1.6
All 5.0 engines have 1.6 except for the Cobras...
The SO cam can be best described as a POS....
Yeah I'd change the MAP sensor to a HO one. I had funky idle problems with my SO sensor that cleared up when I put a HO one in. Actually I used a Mustang BAP sensor but it's the same thing ;)
Believe me I know ;)
Well, I wouldn't say that . . I'd say it served the purpose for which it was designed - maybe not in the best way imagineable, but still...
Gotta remember too, when the 5.0SO SEFI came out, it was putting out power numbers that one would typically expect of a 2-bbl 351 in the 1970s, which isn't anything to sneeze at given the era.
The SO cam was primarily profiled for torque output at low sub 2000 RPM and not peak horsepower, at the same time keeping gas consumption at a level heavily concentrated on during the CAFE 80's. Thus why it was used for the Crown Vic with E6 heads (another torque before HP design), and also the F150 with E7 like heads and one large air hungry intake system. It also copied the profile and firing order of the non roller 302 cam used before the intro of the non roller HO 302. It served its purpose well for a big bore short stroke block. That said...HO RULES!!!