Hey guys, im trying to figure out which route to go for my brothers car. (1997 cobra , with 2004 4v shortblock, 01 heads, with 04 cams. Aeromotive fuel lines regulator...ect.) He has a vortech now, but there is no power till 5k+ rpms's, and obviosly with a twin screw s/c you get full boost off idle. Pretty much everyone i know is running a Kenne Bell on their 4 valves, so any info on picking wich route to go would help. Also, he would be running a front mount with the 04 cobra heat exchanger setup. Thanks, Alex.
Kenne Bell Vs. Whipple????
- Thread starter birel21y
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Magic
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Why is this Vortech making boost at 5K+rpm?
Something is wrong here?
Belt slip?
What model Vortech is it? What size pulley on the blower? Is there an under-drive pulley on the crank?
Something is wrong here?
Belt slip?
What model Vortech is it? What size pulley on the blower? Is there an under-drive pulley on the crank?
97stanger
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yeah man theres something wrong with his setup. He should be seeing boost buildup anywhere from 2500-3000
Mbachota97
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Maybe he means that he doesnt get full boost til 5k b/c thats when mine finally kicks in. Also is there anyway to get full boost to come in quicker than 5? 4000 or 4500 is it possible?
like they said, it should definately be making boost much sooner than 5k. when you say no power what do you mean?
it could be something else in the combo as well, not just the blower.
For a positive displacement, KB or whippel are nice. Does Whippel make one that fits the 01 heads?
KB does, and I believe they've recently redesigned their blowers to be more efficient- since whipple whas kicking their buts.
It would be nice to have that torque on tap at the lower RPM's.
Good luck with it.
it could be something else in the combo as well, not just the blower.
For a positive displacement, KB or whippel are nice. Does Whippel make one that fits the 01 heads?
KB does, and I believe they've recently redesigned their blowers to be more efficient- since whipple whas kicking their buts.
It would be nice to have that torque on tap at the lower RPM's.
Good luck with it.
sorry about not getting back sooner guys.... yeah, i meant that he gets 5 lbs of boost off the line, but then it has to build up to 10 lbs ( 10 lbs = 5k+ rpm's.) he has the stock crank pully, and the stock vortech pulley. Its a vortech v-2.
So the Vortech is making power - just not in the range you want it?
I am a fan of both the Whipple and Kenne Bell.
I like the Whipple a tad more based on the fact that Ford Racing puts their name on it. Ford is not going to sponsor something that is not quality.
Depending on what Vortech he has there are Vortechs that will far surpass the KB and Whipple.
What are his goals? I assume by V2 you mean a V2 S-trim?
I am a fan of both the Whipple and Kenne Bell.
I like the Whipple a tad more based on the fact that Ford Racing puts their name on it. Ford is not going to sponsor something that is not quality.
Depending on what Vortech he has there are Vortechs that will far surpass the KB and Whipple.
What are his goals? I assume by V2 you mean a V2 S-trim?
Ya, its a s- trim. It would just be better in my opinion to have a twin - screw on a 4 v cobra compared to a vortech, ... simply because 4.6's dont produce big power low in the rpm's. and most centrifugal superchargers dont make alot of psi until higher rpm's. So, its kinda like having a power- adder where you need it.. I have always been a fan of kenne bell, but obvosly if Ford uses whipple and puts their name on it, it must mean something.
See I would rather go with the centirfugal on a 4V without question....
Reason being, the 32V makes enough torque to make it to 2500/3000 RPM with in reason. You have that instant boost and you do nothing but spin, period.
A 4V will rev to the moon, centrifugal makes it's power with RPM :santa_afro:
They both make power though. Either way he is not gonna be sorry.
Reason being, the 32V makes enough torque to make it to 2500/3000 RPM with in reason. You have that instant boost and you do nothing but spin, period.
A 4V will rev to the moon, centrifugal makes it's power with RPM :santa_afro:
They both make power though. Either way he is not gonna be sorry.
Shocker98GT
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Whipple only has the tuner kit for the 03-04 cobra-meaning he'd have to get the 03-04 intake, heat exchanger, etc. separately. Whereas the Kenne Bell does offer a kit that'd be the total package for a car that doesn't have all that. I tend to prefer the KB of the two simply because they're built a little beefier-the bearings and casing. Either one does a fine job though.
justinschmidt1
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LAFENATU said:
+1
I hate hearing people complain that its not making power soon enough.
When are you in this below 3k range?
from a dead stop it takes what? a second to get into the 3k+ power band..maybe less with some 4.30s that you should have in that 4v.
I say keep the vortech and up the boost to 12 psi! lol..he will make more boost down low then!
is the bypass valve correctly installed? you want to have the air flowing from the diaphragm which is usually the reverse of what vortech says, pretty easy to figure out when you look at it
pretty much what you want to do is have the outlet port be the one in line with the vacume line or in other words the side port should be seeing pressure, not the borrom
pretty much what you want to do is have the outlet port be the one in line with the vacume line or in other words the side port should be seeing pressure, not the borrom
