96 COBRA 300HP?

Blown Spring GT · May 19, 2009

I just picked up a 96 cobra and I want to make 300rwhp all N/A. What is the best avenue to get it? Ported heads and cams or just bolt ons? I would love to make 300-320 with out any power adders.

slayr281 · May 19, 2009

Maybe shop for an 99/01 Cobra upper setup? The 99/01 Cobra C-heads and intake are rated at 320hp instead of the 96-98's 305hp. Just on that combo, with a catback and midpipe, I had 285rwhp. I'm sure with some other simple bolt-ons like a cold air intake, aluminum driveshaft, underdrive pulleys, and a tune, 300rwhp shouldn't be a problem at all.

You could likely do it with the 96-98 B-heads, but it'd require a little more work, like head porting or cams.

blackfang · May 19, 2009

Full bolt ons including longtubes, o/r mid pipe, pullies, etc with a short runner intake with imrc deletes and a tune will get around 300-310 rwhp. You don't need cams nor heads.

My old 97 with a K&N and off road midpipe w/ 4.30's I made 273/263 at the tires.

Blown Spring GT · May 19, 2009

96-98 heads arn't the same as the 99/01 heads? I thought the intake was the only change. I was thinking this as a combo......
C&L intake with 80mm mass aire flow.
Under drives.
Long tubes.
o/r x pipe.
acufab t/b.
Cat back
4.30 gears
SCT custom dyno tune.
pray for 300rwhp.....

What do you guys think?

blackfang · May 19, 2009

Blown Spring GT said:
96-98 heads arn't the same as the 99/01 heads? I thought the intake was the only change. I was thinking this as a combo......
C&L intake with 80mm mass aire flow.
Under drives.
Long tubes.
o/r x pipe.
acufab t/b.
Cat back
4.30 gears
SCT custom dyno tune.
pray for 300rwhp.....

What do you guys think?

96-98 Heads are B heads
99+ are the C heads aka tumble port design.

The gears won;t help you in gaining rwhp, if anything they can hurt you. The list in my previous post is what will get you to 300 rwhp.

GoBabyVroommm · May 19, 2009

U can't use 99-01 upper intake due to your heads. But a/c delete, full exhaust, pulleys, intake, and t-body. That is all ready you can do. Make sure you get a Doc gas X pipe with the long tubes it will give u the most hp. Your 96 should put down 255rwhp stock with all this 290rwhp depending on how healthy is your motor.

But putting a 410 gear is nasty. I has a 373 in my cobra and wish i went with a 410 cause it can rev high. Its a 200rpm difference between a 373 and 410

blackfang · May 19, 2009

The short runner intake w/ imrc deletes and tune is what will put you over. All the bolt ons you can have including Lt's will get you around 295ish. The intake and tune is what will help. There are a few that have a very similar combo of what I listed and making over 300 rwhp and around the 315 rwhp range.

BTW, a 4.30 or 4.56 gear is nastier

Blown Spring GT · May 19, 2009

What is the intake runner delete?

blackfang · May 19, 2009

Blown Spring GT said:
What is the intake runner delete?

The short runner intake is where the intake runners are shortened. With the IMRC deletes removed the Intake Manifold Runner Control butterflies are gone and new spacers are put in their placed. Of course you need a tune for this as well, otherwise you will get a CEL and not maximize the potential. This increases midrange and top end HP, but you tend to lose a little down low. That is why it is recommended to have a 4.30 gear or a 4.56 gear to overcome the low end loss.

98bluevert · May 19, 2009

blackfang said:
BTW, a 4.30 or 4.56 gear is nastier

i had a 4.10 in my car, chucked a ring bolt and went to a 4.56. wouldnt have it any other way. my 2v feels like a beast with it 5th gear pulls as hard as 4th did when i first got my car. the only thing is i wouldnt do much highway driving i think around 70 mph i am at 3000 rpms in 5th.

Blown Spring GT · May 20, 2009

I took her to the track last night for her first pass down the 1/4.
13.78 @ 102mph was my best. 2.17 60'
What do you think? Is that normal for a stock cobra?

four six · May 20, 2009

Blown Spring GT said:
I took her to the track last night for her first pass down the 1/4.
13.78 @ 102mph was my best. 2.17 60'
What do you think? Is that normal for a stock cobra?

slow. Need to get that 60' under control.

blackfang · May 20, 2009

Blown Spring GT said:
I took her to the track last night for her first pass down the 1/4.
13.78 @ 102mph was my best. 2.17 60'
What do you think? Is that normal for a stock cobra?

What year Cobra? My 97 went 13.8@101 bone stock.

Blown Spring GT · May 20, 2009

SVT32VDOHC · May 20, 2009

I would just strap a Vortech on it. Porting heads and changing cams will eat up a lot of money for a measly 40 RWHP.

blackfang · May 20, 2009

Yep, but it also cost a lot more for a vortech and set it up correctly too.

Blown Spring GT · May 20, 2009

I pulled the car into my shop to pull the ses light codes. It has bank 1,2 lean. I found the pcv hose cracked. That should help out with power some. I also reflashed the pcm. I will take her out to Big Shot Dyno and get a base line number this weekend. I am starting the modding next week.

twogts4us · May 20, 2009

blackfang said:
The short runner intake w/ imrc deletes and tune is what will put you over. All the bolt ons you can have including Lt's will get you around 295ish. The intake and tune is what will help. There are a few that have a very similar combo of what I listed and making over 300 rwhp and around the 315 rwhp range.

BTW, a 4.30 or 4.56 gear is nastier

IMRC on a 96 Cobra - I'd leave em. While you may be happy at the dyno (with some increase in PEAK HP), you won't be so happy on the street after you realize what you lost in making this deal.

BTW, my 04 Mach made 303 RWHP with UDPs, BBK throttle body, and MRT cold air intake, Magnaflow catted X and catback, FRPP alum DS and a strong but safe Diablo Tune...that's it.

Blown Spring GT · May 21, 2009

I think my car can lay down 300hp with some intake, exhaust and tune.

blackfang · May 21, 2009

twogts4us said:
IMRC on a 96 Cobra - I'd leave em. While you may be happy at the dyno (with some increase in PEAK HP), you won't be so happy on the street after you realize what you lost in making this deal.

That is true. That is why I also stated that a 4.30 or a 4.56 gear will certainly make up for that little bit of loss.

BTW, my 04 Mach made 303 RWHP with UDPs, BBK throttle body, and MRT cold air intake, Magnaflow catted X and catback, FRPP alum DS and a strong but safe Diablo Tune...that's it.

The Mach is a different engine(different heads/intake and cams) so it is irrelevant to the topic.

96 COBRA 300HP?

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