Easy way to add HP?

[Selo]

Originally Posted by twobjshelbys

The Paxton is the most compatible with the Cobra setup. A small amount of boost (4-6psi) should be all you need. You'll definitely have to retune your EFI. And you may need to look at your fuel delivery (pump, lines) to be sure they can handle it.

I would caution you about adding too much horsepower. Cosby's 200 MPH routine was a documentary. Too much horsepower turns a Cobra into a death trap. You probably have a pretty nice streetable car. It wouldn't take too much more HP to turn the car into a "rear end breaks loose at the drop of a hat" - or any downshift or any upshift. My car had a Roush 427IR that engine dyno spec at 550hp, with about 500 at the wheels (I think their 550 was conservative). It took great care to not break the rear end loose.

That's what I'm trying to avoid.
Called Summit racing and they quoted about $4500 for the Vortech kit. That's too much. I think better to do a new motor than pay that much for a new FI system. U could spend 7 on an engine and sell mine for 2 and we're in the same ball park, with a less complicated set-up. Am I missing something?

[cycleguy55]

Originally Posted by Selo

That's what I'm trying to avoid.
Called Summit racing and they quoted about $4500 for the Vortech kit. That's too much. I think better to do a new motor than pay that much for a new FI system. U could spend 7 on an engine and sell mine for 2 and we're in the same ball park, with a less complicated set-up. Am I missing something?

Torqstorm systems run about $3K, but you'd also need to replace your EZ Fast EFI with a system set up for blow-through boost. Mustang360° put a Torqstorm system on a built 5.0L EFI engine and got a 50%+ increase in HP with 10 PSI of boost:

• Before: 407 horsepower at 6,200 rpm and 397 lb-ft of torque at 4,500 rpm
• After: 638 horsepower at 6,400 rpm and 545 lb-ft of torque at 5,600 rpm

That's increases of 231 HP (57%) and 148 lb-ft of torque (37%).

Your cam has left lift and duration, so you're unlikely to get to those levels but, as noted in the article, that's block-splitting territory - so keeping power levels down a bit is not a bad idea. Limiting it to lower boost levels would probably be a good idea for purposes of longevity.

TorqStorm Fuelie 5.0L Test

TorqStorm Small Block Ford Supercharger Kits