96-98 cobra cams 2 sets

[the1andonlyGR81]

Im just thinking out loud here......... how are the cams worth 20 hp? People also claim 10+ for the Cobra intake. I ask because an LSC is rated at 285hp, no? And the 96-98 Cobra is rated at 305. So if you get 10 from the intake and another 20 from the cams then you are at 315hp on a car that has a tamer factory tune compared to its little brother.

base 280hp
lsc 290hp
cobra 305
without intake who knows 5hp loss maybe none just at different rpm.
mine said power from off idle to 5400 rpm, but with mods, etc it definitely pulls to 6000or more im having trouble trying to schedule dynotune for longest time hopefully tuesday ill know.

 

[the1andonlyGR81]

Here are some graphs of the "Cobra Cam Swap"; worth about 20hp and about the same torque - worth it IMHO... I believe only one of them didn't degree in their cams...

Here is a couple of Mark VIIIs:

Here is a few Mustangs with the swap:

what year were the stangs? did they swap heads, tey must have because they were 3v right? youd figure a much better improvement there, but not much.

 

[the1andonlyGR81]

I thought the cams are already the same....is the cobra motor not the same internally??

no sir. actually i think the intake lift is .392 on mark and .397 its miniscule its in one of the 100cam threads weve done, but the duration is definitely longer

 

[NetKeym]

what year were the stangs? did they swap heads, tey must have because they were 3v right? youd figure a much better improvement there, but not much.

No, they weren't 3v heads, you can't put 4v intake Cobra cams on a 3v head and as for swapping the 4v heads on the 3v block - I'm not sure if they did that or not - it would make sense from the hp numbers. I'm not sure about the model years on the Stangs, but I know the Mark VIIIs were a 94 and a 97. Generally, you get around 20rwhp with the cams; I believe the 2nd graph down is the one that did NOT degree the cams, just put them in.

 

[wickedwhiteVIII]

Current set up I have running now is stock Mark motor with cobra intake, stock manifold, and a vortech blower @8psi making 392 rwhp!


New setup waiting to do engine swap is 03 cobra all-forged bottom end, 96-98 cobra heads port & polished, cobra intake, kook headers, and the vortech SC hopefully boosting 16psi plus when it's all installed.
RWHP??? Can't wait to find out

 

[Kevin O'Connell]

Comp cams

Comp cams reccomended these and new springs-

Kevin, for your set up, I would look at cam set part number 106160. Duration @ .050 230/230 Lift is .425/.425 with a 116 LSA.. It will need to be retuned as well. Are you using the stock springs? Let me know so that I can make a recommendation of that as well..



I'd like to know what it will sound like as well- anybody got video with this set?

 

[the1andonlyGR81]

Comp cams reccomended these and new springs-

Kevin, for your set up, I would look at cam set part number 106160. Duration @ .050 230/230 Lift is .425/.425 with a 116 LSA.. It will need to be retuned as well. Are you using the stock springs? Let me know so that I can make a recommendation of that as well..



I'd like to know what it will sound like as well- anybody got video with this set?

they recomended that for you ? based on what mods? do you have a high stall converter, tall gears?
i went with 106100 just because of rpm range and it will work fine with what ive got until i can change out gears and a high stall converter. ive got a higher than stock converter now, but given rpm range of stock bottom end and intake even though im changing it daily driveability wont suffer.
i also believe using those springs or rather the seats need to be machined in the head to accomodate the larger seat.you will lose a signifigant amount of low end with that cam, its a great grind just make sure you have all the parts at once they recommend.

 

[Right on the Mark]

they recomended that for you ? based on what mods? do you have a high stall converter, tall gears?
i went with 106100 just because of rpm range and it will work fine with what ive got until i can change out gears and a high stall converter. ive got a higher than stock converter now, but given rpm range of stock bottom end and intake even though im changing it daily driveability wont suffer.
i also believe using those springs or rather the seats need to be machined in the head to accomodate the larger seat.you will lose a signifigant amount of low end with that cam, its a great grind just make sure you have all the parts at once they recommend.

I think you saying "seats" you really mean "spring pockets". You can get springs that will handle high lift and drop right into heads no mods. Just want to clear that up.

 

[Kevin O'Connell]

More info

Pricing from Comp Cams--Anybody know where better pricing is? 106100. Duration @ .050 226/222 Lift is .425/.425 with a 114 LSA.. The cost of the cams are $1301.33. the springs that you need are 26123-32 $426.72, Retainers 799-32 $107.36 and cam gear set 10246set for $259.25. I can cover shipping to the lower 48 states.


Car has built trans, converter is approx. 400rpm higher than stock, shift kitted, 3.73's, 245/45/18 tires, CAI, LMS double x-pipe full exhaust, LMS mass kit, Superchips program.

Cam gear set they reccomend is fully adjustable. Got cam degreeing instructions available? I know how to set up with a dial indicator and degree wheel- just want to know if there is anything specific to these motors.

 

[the1andonlyGR81]

Pricing from Comp Cams--Anybody know where better pricing is? 106100. Duration @ .050 226/222 Lift is .425/.425 with a 114 LSA.. The cost of the cams are $1301.33. the springs that you need are 26123-32 $426.72, Retainers 799-32 $107.36 and cam gear set 10246set for $259.25. I can cover shipping to the lower 48 states.


Car has built trans, converter is approx. 400rpm higher than stock, shift kitted, 3.73's, 245/45/18 tires, CAI, LMS double x-pipe full exhaust, LMS mass kit, Superchips program.

Cam gear set they reccomend is fully adjustable. Got cam degreeing instructions available? I know how to set up with a dial indicator and degree wheel- just want to know if there is anything specific to these motors.

i came across a christmas special. i had my heads redone already.you have basically the same setup. they recommend anything that makes them money.i bought nothing but the cams, another advantage of that cam grind. the heads came off another 98 cobra in his shop that had 45000 miles on it, got sandwiched between a wall and a semi! the whole car is about 6ft long. i wanted the whole thing, but he has plans for it all everything done new. even with the stock 97/98 head the stock springs are fine as long as theres not a ton of mileage on them like over 125k. you go into anything more aggressive youll need all the rest. cams are in, degreed runs like a champ.save your money unless your made of it

sounds like this...idle dont know what happened to video,

hitting second.....with stock rearend

 

[the1andonlyGR81]

I think you saying "seats" you really mean "spring pockets". You can get springs that will handle high lift and drop right into heads no mods. Just want to clear that up.

yes spring pockets was what i was searching for, and 26123 springs are "not available" currently and are basically a stock replacement spring, ANY other spring on their list " may require machining"
4V STOCK VALVE SPRINGS
6513-2 1996-04 4.6L 4V each $6.95 buy
Stock valve springs for 4 valve cylinder heads, good for
moderate performance increases. Suitable for cam lift to
.495, up to 7500 rpm.
the point i was trying to make is the stock springs good for moderate cam increase and lift to .495" and float at 7500rpm well beyond where you should be. when you get into more duration at lift over .450" is when you start to have to worry about seat pressure and spring bind, etc. the manufacturers will always try to sell you alot of " insurance" talking with people who actually work on these motors is more worthwhile, like yourself who ive told i respect your opinion greatly.

 

[Kevin O'Connell]

Thanks

Thanks guys for the info. I'll shop around for the cams and gears and buy the springs you reccomended.
I'm looking locally for a long block to build as a blower motor. When I find one I'll use the heads off of it, install the cams, springs and gears and figure out how to degree the cams. Did you degree all four cams? Did you replace cam and timing chains at the same time?
Got any suggestions to source the cams?

 

[the1andonlyGR81]

Thanks guys for the info. I'll shop around for the cams and gears and buy the springs you reccomended.
I'm looking locally for a long block to build as a blower motor. When I find one I'll use the heads off of it, install the cams, springs and gears and figure out how to degree the cams. Did you degree all four cams? Did you replace cam and timing chains at the same time?
Got any suggestions to source the cams?

the cams come with spec cards for degreeing and detailed instructions. they look like this....

but degreeing one cam is a pain 4 well, i let jon my buddy with shop do it.you dont need to buy anything special, unless you go more radical (aside from degree kit if needed, and you can rent them ,too im all for doing your own work and ive built a lot of motors, and you have to learn i dont know what your skill levels are but let someone who's done it before do it. you dont want to ruin your motor right from go.

 

[MercuryLs]

Mach 1, 03/04 Cobra, Aviator, Marauder (Lincoln cams are very close to these also, but WAY less LIFT):
Intake: 184 deg @ .050/.394 lift
Exhaust: 196 deg @ .050/.397" lift
114 lobe center

96-98 Cobra:
Intake: Primary Lobe, 196 duration @.050/ .390 lift
Secondary Lobe, 206 duration @.050/ .390 lift
Exhaust: 196 duration @.050/ .390 lift
114 lobe center

99/01 Cobra:
Intake: 196 duration @.050/.392 lift
Exhaust: 194 duration @.050/.390 lift
114 lobe center

FR500 (M-6550-T46) Cam specs:
intake adv dur 258° @.003, 212@.050 /.472 lift
exhaust adv dur 254° @.003, 208@.050 /.472 lift
109° center line
204/214 spec’d

2000 Cobra R:
intake: 212 dur@.050/.510
exhaust: 212 dur@.050 /.474

FORD GT 5.4 DOHC
Int: 197 duration .466 lift
Exh: 197 duration .456 lift