Which intake for FI LS2 or LS6?
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From: Plainfield, IN
Which intake for FI LS2 or LS6? Going to do a conversion on this lil bitty LS4 intake...its strangeling my topside flow...i was told the LS2 intake is better for FI set ups....
can someone shed some light on this...Im a rear mount MP T70, IC, 8psi, manifolds into single downpipe collector, and 69lb inj. with N2O installed and plan on using on top of FI with the intake i choose to go with...
Motor: LS4-325ci, 5.3L V8-10:1, stock LSx short block bottom end...crank is 13mm shorter to mount for fwd....
walbro 255 and rewire...
160* tstat
future plans are cam and lifters conversion to non DOD and full stage 2 rear mount head job.....
going to be converting to E85
we are 385whp and 446ftq as of right now....
all this so you dont have to ask LOL....
Thanks all!
can someone shed some light on this...Im a rear mount MP T70, IC, 8psi, manifolds into single downpipe collector, and 69lb inj. with N2O installed and plan on using on top of FI with the intake i choose to go with...
Motor: LS4-325ci, 5.3L V8-10:1, stock LSx short block bottom end...crank is 13mm shorter to mount for fwd....
walbro 255 and rewire...
160* tstat
future plans are cam and lifters conversion to non DOD and full stage 2 rear mount head job.....
going to be converting to E85
we are 385whp and 446ftq as of right now....
all this so you dont have to ask LOL....
Thanks all!
Thread Starter
12 Second Club
iTrader: (11)
Joined: Feb 2009
Posts: 570
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From: Plainfield, IN
Here you go Ross, check this out
http://tpis.com/pages/4_12_06 Intake is a LS6 with a LS2 inlet so you would need to use the LS2 throttle body.
http://www.lingenfelter.com/mm5/merc...egory_Code=C35
Intake comparison dyno tests
http://tpis.com/pages/2_17_06
http://tpis.com/pages/4_12_06 Intake is a LS6 with a LS2 inlet so you would need to use the LS2 throttle body.
http://www.lingenfelter.com/mm5/merc...egory_Code=C35
Intake comparison dyno tests
http://tpis.com/pages/2_17_06
Thread Starter
12 Second Club
iTrader: (11)
Joined: Feb 2009
Posts: 570
Likes: 0
From: Plainfield, IN
Here you go Ross, check this out
http://tpis.com/pages/4_12_06 Intake is a LS6 with a LS2 inlet so you would need to use the LS2 throttle body.
http://www.lingenfelter.com/mm5/merc...egory_Code=C35
Intake comparison dyno tests
http://tpis.com/pages/2_17_06
http://tpis.com/pages/4_12_06 Intake is a LS6 with a LS2 inlet so you would need to use the LS2 throttle body.
http://www.lingenfelter.com/mm5/merc...egory_Code=C35
Intake comparison dyno tests
http://tpis.com/pages/2_17_06
LS2 intake install.
http://www.fiero.nl/forum/Forum2/HTML/095910.html
Extra info on LS2 tb
I thought I'd add this little bit of info I got a while back. It's an email from a guy who swapped an LS4, with an LS2 intake and throttle body, into his fiero. The first paragraph is me asking questions and the second is his response.
"I'd like to learn more about your LS4 swap. More specifically the LS2 intake mod. I read your web page where you covered most of the swap. From the looks of it you used an LS2 intake, TB, the valley tray and the fuel rail. I have a couple questions regarding this swap. How did you get the LS2 TB to work with the LS4 connector? What else did you do to complete the LS2 intake/ TB swap? I'm sure there is something regarding the OPSU and MAP sensor. Any help is greatly appreciated."
"The LS2 intake and throttle body are unmodified. The lifter valley cover is modified in two areas. It has a crankcase vent line that is cut off flush and welded shut. Also, the OPSU boss was cut off and a new one made from aluminum rod welded on at an angle to clear the TB. The LS4 MAP sensor fits the LS2 intake. I replaced the TB connector with one from an LS2, there are two wires un-used. The LS4 has two separate sets of 5v ref and ground circuits, on the LS2 they are combined. The LS4 injectors are too short, you must use LS2 type injectors. The car has not been fully tuned yet, but I started by importing the LS2 injector flow rates and ETC settings to get it running."
http://www.fiero.nl/forum/Forum2/HTML/095910.html
Extra info on LS2 tb
I thought I'd add this little bit of info I got a while back. It's an email from a guy who swapped an LS4, with an LS2 intake and throttle body, into his fiero. The first paragraph is me asking questions and the second is his response.
"I'd like to learn more about your LS4 swap. More specifically the LS2 intake mod. I read your web page where you covered most of the swap. From the looks of it you used an LS2 intake, TB, the valley tray and the fuel rail. I have a couple questions regarding this swap. How did you get the LS2 TB to work with the LS4 connector? What else did you do to complete the LS2 intake/ TB swap? I'm sure there is something regarding the OPSU and MAP sensor. Any help is greatly appreciated."
"The LS2 intake and throttle body are unmodified. The lifter valley cover is modified in two areas. It has a crankcase vent line that is cut off flush and welded shut. Also, the OPSU boss was cut off and a new one made from aluminum rod welded on at an angle to clear the TB. The LS4 MAP sensor fits the LS2 intake. I replaced the TB connector with one from an LS2, there are two wires un-used. The LS4 has two separate sets of 5v ref and ground circuits, on the LS2 they are combined. The LS4 injectors are too short, you must use LS2 type injectors. The car has not been fully tuned yet, but I started by importing the LS2 injector flow rates and ETC settings to get it running."
Last edited by DavidGXP; Apr 22, 2010 at 09:04 PM.
