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LS6 Intake manifold on LS2

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Old Oct 18, 2009 | 05:49 PM
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Default LS6 Intake manifold on LS2
I have a 2005 LS2 engine from a GTO and I'm ditching the DBW and going with a LS6 intake manifold and LS1 ECU from a 04 GTO I would also like to switch to the LS6 valley cover while I'm at it

So far I have the LS6 intake/TB/injecters/all sensors with aeromotive fuel rails, ECM, harness.

Is there anything else that I need? I keep reading about coolant passages and am wondering if I'm missing anything.

Thanks in advance.
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Old Oct 18, 2009 | 07:51 PM
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coolant passages are for LS1->LS6. u already have that. and u should already have a ls2 valley cover which is at least as good as the LS2. ls6 valley will have knock sensor holes u won't use.
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Old Oct 18, 2009 | 08:37 PM
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Changing the wiirng harness also? The LS6 throttle body and PCM will take a TPS and IAC sensors that a DBW car doesnt have.
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Old Oct 20, 2009 | 06:16 PM
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Originally Posted by SweetS10V8
Changing the wiirng harness also? The LS6 throttle body and PCM will take a TPS and IAC sensors that a DBW car doesnt have.
Thanks guys!

Yeah I'm also changing the harness so I need to extend it for knock sensors and I also understand the cam sensor wires need to be reversed. The LS2 I have is 24x
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Old Oct 20, 2009 | 06:24 PM
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any ls2 parts gonna be up for sale?
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Old Oct 20, 2009 | 07:51 PM
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Originally Posted by anheuserbusch08
any ls2 parts gonna be up for sale?
Yes sir!

I have a brand new LS2 PCM, LS2 intake manifold and some other goodies. I need to get the engine from the donor car and then I'll start posting stuff up.
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Old Oct 20, 2009 | 10:29 PM
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might I ask why you are doing this?
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Old Oct 21, 2009 | 05:23 AM
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Originally Posted by JDMC5
might I ask why you are doing this?
Several reasons... This is a swap, it's going in a RX-7 I bought the engine as a long block (with some extras) and it did not come with the DBW TB or the pedal assembly -found a great deal on the LS6 intake manifold completely loaded off of a GM crate engine NEW 0 miles... Needed to buy the PCM and harness anyway - so why not go cable TB?
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Old Oct 21, 2009 | 09:34 AM
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Sounds like a great project Andrew!
Please post some pics as they become available and time allows you.
Somewhat like a start to finish idea.
Best of Luck on your ride!
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Old Oct 21, 2009 | 05:21 PM
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Originally Posted by RapidRick
Sounds like a great project Andrew!
Please post some pics as they become available and time allows you.
Somewhat like a start to finish idea.
Best of Luck on your ride!
Thanks! things have started moving on the build!

Just pulled the rotary and started prepping the chassis.

here is my build thread:

https://ls1tech.com/forums/conversio...ld-thread.html
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Old Oct 21, 2009 | 11:19 PM
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Sweet man good luck with that. That car should rip! You should run a 90mm TB with that, should be worth a couple hp over the LS2 intake too.
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Old Oct 22, 2009 | 12:35 PM
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I'm building a 6.0L ls2 for a 99 WS6 and my ls6 off of my 5.7L ls1 intake doesnt fit. Seem to be to narrow??? and ideals???
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Old Oct 22, 2009 | 01:02 PM
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Originally Posted by amkoolaid
I'm building a 6.0L ls2 for a 99 WS6 and my ls6 off of my 5.7L ls1 intake doesnt fit. Seem to be to narrow??? and ideals???
Should go right on....

I'll be test fitting mine soon.
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Old Nov 10, 2009 | 11:32 PM
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do you still have the ls2 intake?????
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