LS2 90mm Intake on LS1 pics
08-13-2004, 06:53 PM
#4
Melting Slicks
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Is this setup any easier to tune on an ls1 than the other 90mm options--I found the breather filter interesting as well I am installing a similar situation now with a catch can that has a breather like this on top but the output of the can is plugged so no vacuum and hopefully no oil in the can--
08-13-2004, 07:26 PM
#6
Racer
Member Since: Jun 2003
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It appears the the fuel rails have been beefed up. Does any one know the size of the new injectors? I also wonder about the fuel pumps plug and play abilities. It looks like everything bolts up nice. 
08-13-2004, 08:33 PM
#7
Melting Slicks
Thread Starter
It will require...
The new fuel rails and lower injector o-rings seals and .300" rail spacers to make up the different in height between the injectors. The original current rail can be use with a buncha tweaking, but the new LS2 are a much larger diameter.
90MM LS2 drive by wire throttle body can be retro wired to current PCM and be fully functional.
Extend MAP sensor (use current lsx sensor ) wiring 21” to reach the front from current rear position.
Current fuel rail cover will not directly bolt on, but will with a tweak to the fuel inlet and some tweaking with a die grinder
All the current Brake Booster,PCV lines etc are the same.
90MM LS2 Throttle body will work with the following information
PIN ID LS2 90mm
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
The new fuel rails and lower injector o-rings seals and .300" rail spacers to make up the different in height between the injectors. The original current rail can be use with a buncha tweaking, but the new LS2 are a much larger diameter.
90MM LS2 drive by wire throttle body can be retro wired to current PCM and be fully functional.
Extend MAP sensor (use current lsx sensor ) wiring 21” to reach the front from current rear position.
Current fuel rail cover will not directly bolt on, but will with a tweak to the fuel inlet and some tweaking with a die grinder
All the current Brake Booster,PCV lines etc are the same.
90MM LS2 Throttle body will work with the following information
PIN ID LS2 90mm
A.) ACT2
B.) ACT1
C.) +5v TPS Reference – Common to both TPS’s
D.) TP1 Signal 0-5v
E.) Common Ground
F.) TP2 Signal 5-0v
98-04 Wiring hookup
A.) ACT 2 - Brown
B.) ACT 1 - Yellow
C.) +5 TPS Dk Green/Wht
D.) TP1 Signal – Dark Blue
E.) TPS GND – Purple
F.) TP2 Signal – Pink
08-14-2004, 06:43 AM
#11
Burning Brakes
The swap seems simple enough, but as ststed above, the tuning ease and power gains will determine whether it's a better way to go than the FAST/aftermarket 90mm TB.
08-14-2004, 09:36 AM
#14
Safety Car
Originally Posted by SideStep
We need answers to these questions before we can move forward with adding this to the mod list.
08-14-2004, 12:34 PM
#15
Le Mans Master
Can that fuel rail be modified to have a return line? If not, how much does the stock 97-98 return style fuel rail need to be modified?
Phillip
Phillip
08-14-2004, 02:13 PM
#17
Melting Slicks
Thread Starter
Originally Posted by Phil97SVT
Can that fuel rail be modified to have a return line? If not, how much does the stock 97-98 return style fuel rail need to be modified?
Phillip
Phillip
Phil
08-14-2004, 02:41 PM
#18
Burning Brakes
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Doesn't look like this is going to work with most FI Kits seeing the throttle motor is now on the passenger side, it looks like it would interfere with the bracketry
08-18-2004, 11:46 PM
#19
Safety Car
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St. Jude Donor '06-'07
more info needed gm parts direct sells the ls2 intake cheap compared to the ls6. Inquiring minds want to know what the gain is like
