Ideas I have to make our 96-98 Cobras faster that I never really see mentioned

Craig Mack

Busted Buffing the Bishop
Founding Member
Mar 9, 2002
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Lake Mary, FL
Stats on my car are in my sig.

I was debating on what I could do next to get the biggest power gains. All I have now is an x-pipe, flows, and gears (I know they give no hp). Anyways, originally I was just going to get a timing adjuster, some pullies and make an intake. I ruled out pullies becuase my alternator is already weak (headlights dim when I roll up/down my windows). So I thought to myself, what can I do to really get some nice power gains? I ruled out a supercharger, becuase it really gets expensive after installation and all the upkeep on them. (been there done that with previous car). Anyways, I was talking to a friend, and he gave me a few ideas:

1)Swap out intake/heads for '01 Cobra intake/heads. ~$700-800 for the setup, +~$450 for labor to install (heads, I would do the intake myself) - ~$500 for my stock stuff = Roughly $700 net costs. This setup is told to give ~20+rwhp and 25+rwtq. Our computers are more aggressive than the '01's so it would probably yeild an even bigger gain on our motors. Doing this alone should make my car nip at the heels of 300rwhp.

2)Ford Racing FR500 Valvetrain Kit: I forgot the figures he gave me, but I think it was around $1200 or so. This kit supposedly yeilds about a 25rwhp gain.

3)Extrude hone the intake: I was THIS CLOSE to picking up an extrude-honed intake for $350 shipped, with NO core charge. But I didn't have the money on me right now, and it had to be a split second decision, so it sold to someone else for $450 + core charge. I didn't get much feedback from you guys, but he said he saw this setup net 14rwhp peak, and average 6-8 across the power band.

4)Steeda Timing Adjuster: Ok, so this is a common one, but still...I'm keeping my eyes peeled for a used one. Again, friend saw this mod alone pick up 6rwhp/9rwtq @ 3 degrees advanced timing on a 98 Cobra. I was about to pick up a used one for $60, but the guy never responded. That would have been a killer hp/$ gain.

So with all these mods combined, I would be dynoing around 360rwhp/370rwtq for less then the cost of a complete supercharger kit. It would put a huge smile on my face for my bolt on lowley 97 Cobra to walk stock '03 Cobras. :D About the same HP - 300lbs + Live axle/gears.

Anyways, I am seriously considering #'s 1,4. With the timing adjuster and 01 intake/heads I hope to be at the 300rwhp mark. What do you guys think of all this? I am constantly trying to find ideas to make my Cobra faster, and would appriciate it if ya'll share your questions or comments on any of this.
 
I ran a 99 cobra motor in my 96 for a while and I was quite impressed with power improvement over my 96 engine. When running that setup there are a few modifications to do. Lenghtening some wires, modifying the vacuum harness, modifying the fuel rails so they mount to the 99+ intake, my 96-98 mid pipe would not fit the 99+ headers so I had to buy a new X-pipe, you need to buy a 99+ coolant crossover tube and weld in another bung to mount the ect sensor, you also need a chip burned to turn off the IMRCs since you are not running them anymore, a set of 99+ throttle and cruise control cables, and a set of 99+ COP valve covers are a good idea also. The 96-98 valve covers do not fit well with a 99+ intake manifold due to where the throttle body is now located.
If you are looking for a great power increase with a little amount of money I would look at getting a nitrous kit for the car.
 
DirtySanchez said:
If you're going to swap heads, go for 03 Mach I/Cobra heads with Mach I cams. The 03+ heads flow more air and more coolant as well.


Thats probably going to run me more than 01 Heads, wouldn't it? How much better do they flow than the '01 heads? The reason I say '01 heads/intake is for cost reasons....

I'd probably skip the Ford Racing Valvetrain Kit for cost reasons, but what about the SSR manifold with 01 heads? How would that combo work out?

Keep in mind i'm looking for the best bang for the buck, so the parts are going to be used and I'd wait to find a good deal. It seems like used '01 Heads/Intake would be the best bang for the buck....but I have no idea how much the 03 heads outflow the 01's and if they could mate to an 01 manifold, and if it would be as cost effective as the complete 01 setup.
 
missouri_guy197 said:
With all that other stuff a Timing adjuster wouldn't be needed becuase you'll need a custom tune after installing the heads, intake, and cams/valvetrain...they'll adjust your timing with the chip...

My stock CPU wouldn't be able to adjust to the new heads/intake??
 
The SSR intake is for the 96-98 B heads...The B heads actually outflow the 99/01 heads slightly...If you were going to do the headswap and the intake swap you'll need to tell your computer that it doesn't have IMRC's anymore and the only way to do that is with a chip or custom tuning...

03 heads mate to the 01 intake, that's basically what the Mach1's use for intakes with a few changes to it...


A good read for you would be to get the Sean Hyland book on building 4.6 engines...You can get it from Amazaon.com for about $13.50+shipping...lots of good info in that book and you'd learn a lot from it...

http://www.amazon.com/exec/obidos/t...103-7703453-0231812?v=glance&s=books&n=507846