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Swapping LS3 into 4th GEN SS

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Old Jun 29, 2012 | 02:27 PM
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Default Swapping LS3 into 4th GEN SS

Curious as to what throttle body I can use with the LS3 intake. I know the stock LS3's are "drive-by wire" rather than a cable. Can I use an LS2 throttle body?

Thanks.
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Old Jul 1, 2012 | 12:53 PM
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LS2 are fly by wire. I used Edelbrock 92 mm which came with the IAC and TPS.
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Old Jul 1, 2012 | 12:58 PM
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Couldn't you just use a nw or any other 90 mil throttle body. As long as its cable driven
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Old Jul 1, 2012 | 09:25 PM
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Thanks fellas, I will look into those
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Old Jul 1, 2012 | 09:27 PM
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Thanks fellas. I will look into those.
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Old Jul 17, 2012 | 08:59 AM
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I just used a cable driven PTM 102mm TB.
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Old Jul 17, 2012 | 08:29 PM
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Any cable driven 90mm T body will work. I recommend that you clean up the entrance of the stock manifold. Mine had a lip and some rough ridges.
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Old Jul 17, 2012 | 09:06 PM
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Originally Posted by sssalah
LS2 are fly by wire. I used Edelbrock 92 mm which came with the IAC and TPS.
true story
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Old Jul 18, 2012 | 10:44 AM
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Just keep in mind you'll need to fabricate a bracket to hold that little plastic piece so you can adjust and hold your throttle cable in place....there was no such provision on the LS3 intake!
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Old Jul 25, 2012 | 09:30 AM
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Motor is in via
www.Premierperformanceut.com

Premier built and installed the motor



-6.0 block
- L92 heads
- LS3 Crank
- LS3 Intake
-Manley I beam rods
-JE Pistons and the list goes on.

It should be on the dyno this week, but I'm not to sure I have the fuel system for the power I'm looking for. I have a single Walbro 255 and 60lb injectors. I'm hoping for around 650RWHP out of my TC78.
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Old Jul 25, 2012 | 01:56 PM
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Highly doubt that your walbro is sufficient to feed this power level, maybe dual in tank setup or one external large aeromotive is what you require.
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Old Jul 25, 2012 | 02:04 PM
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That's what I was thinking as well.
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