BruceH

The iat is accounted for in the tune. Whipple has a huge intercooler that keeps iat's low. To make the numbers the OP wants he will have to upgrade the fuel injectors and maf. It's pretty easy to put a lightning iat sensor in the manifold before doing the install. That way it would be there when he's ready for it.

Whipple has one big advantage over the others. It comes with GT500 fuel pumps. They will be a must to hit the power you are seeking.

You might want to do a google search on twin screw blowers making the kind of power you want to get to. I know the KB and Whipple can do it, the TVS Edlebrock probably could too with the right supporting mods. It's alot easier and cheaper to follow someone elses build than to be a pioneer.

Lupo222

Hmmmm...The KB comes with Boost-a-fuel though...would that be sufficient??

Like I said, I still like the Whipple best so far. KB I know CAN put up those numbers, but it doesn't seem as common nor as published...

Off to do some more research.

As far as the cams, how much more HP over the Hot rods would you think I'd pick up with the Detroits or comp cam blower grinds?? Those ones do sound sick...I like the comps best though...bigger lobe...sounds mean

JDWalton

no, I'm running 9psi on my saleen with the BAP and at WOT at 6300 RPM I hit 100% duty cycle

Diabolical!

Definitely not. My track times are consistent within 2 tenths even when I only have a few minutes between runs. Roots style blowers tend to drop off quickly after the first couple of runs from what I've seen. The only twin screw that seems to heat soak is the Kenne Bell. I'm not sure what they use for the rotor housing, but it gets as hot as a frying pan, especially when compared to the Whipple and Saleen.

OP- I've beaten this horse to death in many threads, so I'll just say that for your power goals and other wants, I think the Whipple HO is your best bet. Other setups will get you there, but I feel the Whipple is the most complete kit to get you there with the least amount of headaches (especially when you consider that the GT500 fuel system is included in the price).

onegoal

Would it been better to just have traded in your GT on a used Shelby? 550hp, not the 650 but a pretty neat car and still very fast.

Lupo222

Yea, that wouldn't be that bad of an idea, but while I love the styling of the Shelby, i have other visual plans, and the shelby, well, i wouldn't be able to touch that car if I owned it!

forensicsteve

I'm looking to make 550+rwhp. My ideal goal is 650rwhp though

What do you want to do with 650 rwhp????? If your car is going to remain a street vehicle, 650 rear wheel is useless. If you are going to drag the car, 650 rear wheel is still useless without the obligatory major mods. In which case, you will need 2 budgets. One for modding and another for replacing/fixing all the crap that WILL break. At 650 useable rwhp, you are not modifying the car, you are doing a complete rebuild.

Forget about hp numbers. Your goals should be driven but how you want to use the car and not a number on a dynosheet.

JDWalton

Kinda what I was hinting at also in my first post? Just wondering, what are you going for, or where did you come up with wanting 650 rwhp? For most people when they talk about hitting a mark, expecialy on a car that hasnt been touched much yet, the goal would be 500 RWHP. With most off the shelf blower kits, or even brenspeed packages, you see the results most people post on here being like 420-480 RWHP. Trying to push that much and run it with any reliability will bring in other mods. I'm going to assume that you already got the fuel system with your kit. but here goes:

Blower kit able to produce that much hp 8k?
B302 3.5k
Upgraded transmission 4k
Clutch + Flywheel 700
Driveshaft rated to that much power 800
eaton rear end and moser axles 1060

That doesnt touch other asspects of the car like brakes, wheels, suspension to make it hook, or install. Lets not forget, with that kind of power most tracks wouldnt let you down the track without a cage either. (at least up here)

BruceH

Big difference between 550 and 550rwhp. Stock GT500's are in the lower half of 400's when measured in rwhp.

Simon1

The more you work on and play with different parts on the car, the quicker and easier it becomes to discover a way to get something done. Having another set of hands and or brain around to assist doesn't hurt either.

I like the DIY guys.

The Kenne Bell install wasn't bad at all.