Forums at Modded Mustangs
Home Register FAQ Members List Calendar Blogs Garage Gallery Search Today's Posts Mark Forums Read


Go Back   Forums at Modded Mustangs > Mustang Forums > Modular Mustangs > 99-04

Discussing KB Twin Screw in the 99-04 Forum. I am running stock internals and thinking about doing a Twin Screw. how much boost ...

       

Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free!

 
LinkBack Thread Tools
Old September 22nd, 2007, 02:54 PM   #1
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

KB Twin Screw


I am running stock internals and thinking about doing a Twin Screw. how much boost could I run safely? Also I don't wanna blow out my rear end. Would 4:10 still be a good fit for gears?
 

Sponsored Links Remove Advertisements
Forums at Modded Mustangs Advertisement
Old September 22nd, 2007, 02:55 PM   #2
Doc
 
HMUSN's Avatar
 
91 Sonic Blue Goodness
19.83 @ 12mph
 
Join Date: Nov 2006
Location: NJ
Posts: 27,311
Default

3:73's if you plan on a twin screw.

keep it at around 9 psi and TUNE. a tune is your best friend.
keep it under 400rwhp and you will be fine.
 
Old September 22nd, 2007, 03:02 PM   #3
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

what if I go over 400 HP should I swap out ther rear?
 
Old September 22nd, 2007, 03:03 PM   #4
Doc
 
HMUSN's Avatar
 
91 Sonic Blue Goodness
19.83 @ 12mph
 
Join Date: Nov 2006
Location: NJ
Posts: 27,311
Default

nah.. just don't launch on drag radials all the time.

besides if you do break it that just means it's time to upgrade
 
Old September 22nd, 2007, 03:07 PM   #5
MuchCoolerThanGTsetGO
 
ChrisJ's Avatar
 
2002 Mustang GT
SLOW
 
Join Date: Jun 2006
Location: Shepherdsville, Kentucky
Posts: 16,281
Default

Keep the power under 400rwhp as said before...

But also as said before a tune is the key to the puzzle...Without a good tune you will blow the engine...

The rear end will hold up as long as you dont hit the track to much with it...Drag Radials will kill the rear end...
__________________
My Junk

www.myspace.com/cjobe

 
Old September 22nd, 2007, 03:14 PM   #6
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

yeah I don't plan on throwing those on. its a dailey driver during the summer Ijust want some more getup and blow the doors off any rice rockets that try to step! :-D :award
 
Old September 22nd, 2007, 03:14 PM   #7
MuchCoolerThanGTsetGO
 
ChrisJ's Avatar
 
2002 Mustang GT
SLOW
 
Join Date: Jun 2006
Location: Shepherdsville, Kentucky
Posts: 16,281
Default

Then a KB 2.1 would work just fine...Buy the intercooled version for even more safety...
__________________
My Junk

www.myspace.com/cjobe

 
Old September 22nd, 2007, 03:15 PM   #8
Where iss at?
 
weems's Avatar
 
2003 Mustang Mach 1
12.89@104.6
 
Join Date: Aug 2006
Location: Macon, GA
Posts: 3,097
Default

you should have no problem doing that with a kb
__________________
Beautiful

 
Old September 22nd, 2007, 03:24 PM   #9
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

you dont think 9 psi is too much? or shouold I stick around 6-7?
 
Old September 22nd, 2007, 03:25 PM   #10
MuchCoolerThanGTsetGO
 
ChrisJ's Avatar
 
2002 Mustang GT
SLOW
 
Join Date: Jun 2006
Location: Shepherdsville, Kentucky
Posts: 16,281
Default

9psi is just fine with a good tune...
__________________
My Junk

www.myspace.com/cjobe

 
Old September 22nd, 2007, 03:25 PM   #11
Doc
 
HMUSN's Avatar
 
91 Sonic Blue Goodness
19.83 @ 12mph
 
Join Date: Nov 2006
Location: NJ
Posts: 27,311
Default

9psi is fine as long as your tune it on point.

it's all about the tune man.

edit: dammit chris ya beat me.
 
Old September 22nd, 2007, 03:27 PM   #12
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

@ 9 psi it adds approx 160 HP which throws a stock GT to 420. I have cold air intake and cat back exhaust and throttle body nd upper plenum so that would prolly put me somewhere near 440 ish so then should I stick to 6 PSI? or even 7?
 
Old September 22nd, 2007, 03:27 PM   #13
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

ok.
 
Old September 22nd, 2007, 03:43 PM   #14
Regular
 
invisa stang's Avatar
 
1992 mustang lx notch
 
Join Date: May 2007
Location: shelton, ct
Posts: 411
Default

Originally Posted by HMUSN
3:73's if you plan on a twin screw.

keep it at around 9 psi and TUNE. a tune is your best friend.
keep it under 400rwhp and you will be fine.
ehh on my fathers car he put a kb on with 11lbs of boost with cold air, bigger throttle body, and exhaust and his car runs just fine
 
Old September 22nd, 2007, 03:46 PM   #15
Doc
 
HMUSN's Avatar
 
91 Sonic Blue Goodness
19.83 @ 12mph
 
Join Date: Nov 2006
Location: NJ
Posts: 27,311
Default

that because he has an on point tune.

an 11psi KB is pushing it on a 2v.
 
Old September 22nd, 2007, 05:27 PM   #16
Enthusiast
 
RC02GT's Avatar
 
2002 Mustang GT
 
Join Date: Sep 2006
Location: Baltimore, MD
Posts: 971
Default

whats about the pricing for KB 99-04 GTs intercooled? there site doesnt work
__________________
BBK CAI, BBK shortys, BBK x pipe, Flow's, MGW shifter
 
Old September 22nd, 2007, 05:28 PM   #17
Hardcore Enthusiast
 
Fryrice's Avatar
 
 
Join Date: Oct 2006
Location: VA
Posts: 2,034
Default

Why do people ask for advice and then argue with it ?



invisa stang , what does you dad drive ?I can run 20lbs on my motor but that doesnt mean its a good idea .
__________________
Fryrice has left the building.
 
Old September 22nd, 2007, 06:33 PM   #18
Regular
 
invisa stang's Avatar
 
1992 mustang lx notch
 
Join Date: May 2007
Location: shelton, ct
Posts: 411
Default

he drives a 04 gt
__________________
www.myspace.com/lifeisasboringasdeath

rides
1987 ford F-350 XLT Lariat 7.3L idi diesel

projects
1979 ford F-350 custom (soon to get 7.3Lidi diesel)
 
Old September 22nd, 2007, 06:56 PM   #19
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

twin screw intercooled is 4999.00
 
Old September 22nd, 2007, 06:57 PM   #20
Regular
 
Dawgfude03GT's Avatar
 
 
Join Date: Aug 2007
Location: Denver, CO.
Posts: 309
Default

I've got a 75mm throttle body and an upper plenum is that the best bet for the twin screw?
 
Reply



Thread Tools


Threads Similar to: KB Twin Screw
Thread Thread Starter Forum Replies Last Post
Fastest 3v Twin Screw 05 gt KBpowered05GT 2005+ 4 November 4th, 2007 11:03 PM
twin screw max hp? energiesource 99-04 6 October 5th, 2007 12:35 AM
Centi or Twin-Screw? RandoGT 96-98 18 June 19th, 2007 03:02 PM
Twin Screw v. Centrifugal GTSilver 99-04 6 November 15th, 2006 03:21 AM
twin screw? GTSilver 99-04 3 August 30th, 2006 08:02 PM


All times are GMT -4. The time now is 09:02 PM.
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company.
Forum is powered by vBulletin ©2000 - 2008, Jelsoft Ent. Ltd. & SEO by vBSEO 3.1.0 ©2007, Crawlability, Inc.