Actually, this is what I like about the screws!

I'm used to larger displacement motors and the 4.6 just didn't seem to much torque at low rpms. Now it's not a problem.

 

Generally you move forward.
I just don't understand why you keep saying the kb is the most efficient supercharger. You keep saying it, but you don't show any proof of it. All you can tell me is, "I would rather have a twin-screw over the others" I don't care which car you prefer, I don't care what type anyone prefers. I'm stating facts & you have yet to try to put up a good fight on my main point. This whole thing started over you calling the kb the most efficient. I called bullsh*t. You have yet to show me anything backing up what you're saying, instead you keep telling me which one you like & that you take it anyday over the other superchargers.
That's your preference & there is NOTHING wrong with that. You think i'm trying to say that the kb is the antichrist. I'm arguing which is the more efficient of the 3. I said the centrifugal is more efficient on top end, I DID NOT say the kb is one of the worst things ever invented. It is a really good supercharger, but it is NOT the most efficient in all aspects. If you love an all range powerband, good for you, that's a whole other argument.

 

This is where the disagreement started.
IMO If you're going to spend 2000-4000 you most likely would want all rpm power.
Now if you can tell me you wouldn't like to have all around power for that kind
of money then I say you're F***ing crazy. If you're scared of all out power then
I think you need to be driving a KIA SEPHIA or something, IMO. Like
I said before EFFICIENCY isn't the dissagreement PERFORMANCE of the
power adder is. Based on my experience and what I like, I say
Turbos are the Best Power Adder, Twin Screws are the Best Supercharger
If you you're ever in the Chicago Area, I can SHOW YOU why I say this.

 

No need, this was a misunderstanding. Now that I know what you're talking about & I 100% agree. I would take the twin screw over the turbo though in the aspect you are talking about, but that's mainly because I love punching it in my mustang at 2300rpm & having gobs of instant power... a kb would just add to the effect. Turbo's don't have the unexpected smashing you into your seat experience to the passenger, it feels more like a rolling into it unless you rev the engine first, but if you do that then the passenger can already tell what you're about to do.
Same pinning you into your seat experience for the driver just not nearly as much because you know what's coming before it comes.

 

thats bad info sir. with a kb you have only two choices. either stock lower, or gt40 lower. kb does not make a lower for everyones lower intake. if that was the case then they would take the time to do a intercool for all the pushrod kb's out there.

 

Tell KB to send the Discharge Manifold uncut. Then have it custom cut
to fit your aftermarket lower intake. I didnt give bad info. I wasnt
specific as to what I was saying. As far as an intercooler for the 5.0
pushrod motors, that also takes a little fab work. Heres a pic:


[IMG]local://upfiles/24375/17C175B45C074A99964852CC481D9E91.jpg[/IMG]

[IMG]local://upfiles/24375/7B513F4FEC1841F6BD463202AFF56A76.jpg[/IMG]

 

foxgt you havn't been in a turbo car.....a real turbo car sorry....i rode in a few,and let me tell ya i would never complain

 

i'll check on it monday, but i cant see kb sending out uncut manifolds. especially for such an old setup. but if they do then so be it. also the pics of mikes car(buenospeed or whatever his screen name is) yeah he did 2.5 piping to an intercooler mounted up front. also he spent alot on man hours on the fabrication and cutting and fiting of pieces. it was not cost effective for the minimal gains he got from it. could be reason he sold everything and went centri. he made alil more power with his ambient temps dropping below 20, but it was a constant battle getting the cooler air from the I/C to overcome the heated air coming from the inlet tube. i believe he said that if there was a way to increase the tubing to 3 or 3.5 it may be beneficial, but he scrapped the idea. not trying to kill your image of kb, but the blowe is only as efficient as the motor its on. you want around town fun get a kb. you want mad top end power or a track queen get a centri. you want top end street power turbo is the win. each has its pros and cons. kb's just arent efficient enough in the upper rpm ranges like centris, making them less efficient due to the building of heat in the compressor itself. if you could rid the heatsoak issue and with the aid of methanol inject you will bring down the temp considerably. another thing you can do to help a kb out, no matter which one you have is to open up the inlet side. the more air you can feed a kb. the better she will perform for you. with all the kb combo i've seen that are pushrod motor related no one has hit anywhere close to 18psi. the most so far is 16. and the most power from a well built combo was like 550 rwhp. not bad for a kb unit with no I/C, but you will never get a reliable 18psi from one and hit anywhere over 600. just not possible. oh and before you say i should try one and see for myself. uh yeah i've done the kb 1500 and now am building a kb2200 combo. and even i would love to break the forementioned 600 mark, but you gotta be realistic at some point. aim for 600 get in the 500's . seems alil more feasaible to me that way.

 

Ill have to disagree... the best power adder is a roots style supercharger(for all out power the fastest dragsters in the world i believe are HUGE V8's with a roots) Centrifugals are more efficient superchargers then the twinscrew and techinacly the turbo is a supercharger and the only thing they have to say there the best at is lag time and they are the most efficient (if you want good gas go with them).

 

Well, I hope your project goes well. I'm in the process a build also.
331 Dart Sportman Block using my KB 2200 at 15 psi. I'm
gunning for 700RWHP. Once my new motor is put together.
I'm going to turn up the boost on the existing (12-14psi) and see how
much the stock block will take.