Cobra intake manafold swap

OxmanWI

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Yes I did a search and couldn't find anything. Please post up threads if you have any.

With the Gen2, what kind of number increase would you see with a basic Cobra manafold swap over the Mark unit? Not only would it look cool under the hood, I was wondering what the benefit is. Is this also a better choice to go with a vortech SC later on?

Thank you,

Josh
 

ponyboy88

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just getting into these cars (so my advise wont be much) but i would assume you'd see in the area of ten horsepower, since the cobra's were only rated at 305. I imagine a bigger increase would be seen when you add the blower.
 

driller

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Actually, if you plan on a blower, it's not worth changing the intake to a Cobra intake unless you're going forged internals with a short runner intake and mega-rpms.

It would be a better N/A setup over the Gen2 intake for sure.
 

Tiltedhalo

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If you want the truth with a stock GenII you wont see any increase, as a matter of fact you will lose a little. Don't get me wrong the GenII intake is a POS the Cobra is a much better design, but the design is intended for an 800LBS lighter car with a standard trans and 3:53 gears it will raise you power band and you will lose bottom end you will gain some top but it will be a marginal increase.
Put in a 3Grand stall converter and 4:10's and it will be worth something.
 

DLF

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FWIW, 96-98 Cobra's came with 3.27's, and are only about 300-400 lbs. lighter. Race weight on my '98 Cobra is 3,650 lbs. and my '98 LSC is 3,980 lbs., both with me in the car.
 

ajones51

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I put a cobra intake on my 97. I also have 2.5 true dual exhaust (mandrel bent), conical air filter, and had the setup tuned at alternative auto. I made 249 hp and 248 tq at the wheels. From what I've read, genII's usually do anywhere from 210-225 stock.

I did some gasket matching of the intake and also blended the area where the air is split into the valves. I also deleted EGR, but I don't think it made much difference on the dyno.

I never dynoed the car before the intake swap. I also have 4:10 gears which make up for any lost low end torque. I think the swap is worth doing for sure. I felt a big difference above 4000rpm especially.
 

ajones51

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If you want the truth with a stock GenII you wont see any increase, as a matter of fact you will lose a little. Don't get me wrong the GenII intake is a POS the Cobra is a much better design, but the design is intended for an 800LBS lighter car with a standard trans and 3:53 gears it will raise you power band and you will lose bottom end you will gain some top but it will be a marginal increase.
Put in a 3Grand stall converter and 4:10's and it will be worth something.

How can you say this is "the truth"??? I've never seen a dyno sheet from anyone who swapped to a cobra intake showing they lost power. Maybe you should start out saying "If you want my opinion". Not cool to misguide people based on your hunches.
 

driller

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I felt a big difference above 4000rpm especially.

As did I with the worked over Gen1 intake. ;)

op4.jpg
 

danny_holtermann

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driller.. damn that is a nice looking gen 1 intake,
aj, do you just have the conical filter out there in the open, or an ice box?
 

kustomizingkid

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It would fit fine... but the EGR tube would need to be switched... and you would need gen 1 fuel lines, and throttle cable... and cruise cable... and probably lengthen a few wires...
 

Chromebrow

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It would fit fine... but the EGR tube would need to be switched... and you would need gen 1 fuel lines, and throttle cable... and cruise cable... and probably lengthen a few wires...

I've got all these parts still on my Gen 1 parts mark, if anyone wants to try it out, toss me an offer.
I need to save up for my Cobra intake...and my endless list of other upgrades and mods that ill never be able to afford to do:)
 

91 LSC SE

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Searching for close to an hour now and this is the only thread that directly discussed Changing to Cobra intake on a 2nd gen. I found another from 2011 that briefly discussed adding it, but didn't discuss the gains - that thread was: "Got these in the mail today"

Was it ever dyno proven if it actually hurts or improves the performance of a stock 2nd motor?

And with changing gears to 4:10 what does is the M8's rpm at 70mph?
 

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