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Atomic Airforce Intake 99 c5 Install/Throttle Body Question

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Old Feb 16, 2021 | 06:00 PM
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Default Atomic Airforce Intake 99 c5 Install/Throttle Body Question

Newbie any help is appreciate!
I'm new to the LS1 engine. I have a 99 Vette I have performed a cam swap TSP Stage 243 ported heads with a TSP bald eagle stage 2 cam 227/234 @.600, with and LS6 intake, long tube headers, stock TB with 11inch 295 30 20s on the rear. I loving the cam. I have decided to upgrade the intake with the Atomic Airforce for the LS1.
Currently I will be using 36lbs injectors with stock fuel rail with the adapter plate to convert the 4bolt to a three bolt. Im basically setting my top end up so that it will be reused when i rebuild the engine. My questions are:
What drive by wire TB can I use with the stock TPS and what size? ( I'm thinking 90-95mm).
What size injector should i go to in the future.
My goal is to maximize the head/cam combo with nice street manners( My goal is a solid 420 rwhp).









w
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Old Feb 16, 2021 | 11:14 PM
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Moved to C5 Tech.
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Old Feb 18, 2021 | 05:10 PM
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That's very similar to the setup I'm running and I make 414 at the tire. LS1 with 243 heads (but mine are stock and my cam is 231/242 with .600 lift. So I've got a little more cam, but you've got better heads, so it should still be close. I'm using injectors from a supercharged 3800 pontiac GTP. They're rated at 36lbs at 3 bar, but at LS fuel pressure of 4 bar, they're more like 40-42lbs. My intake is a stock Z06 airbox, air bridge, stock MAF, and stock TB.

All this to say, that you might already be at your power goal without spending $1500+ on parts and having to get it re-tuned.

I can't answer you on which DBW to get, sorry.

Last edited by bradleyss14; Feb 18, 2021 at 08:44 PM. Reason: Corrected fuel pressure
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Old Feb 18, 2021 | 08:29 PM
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I thought the LS fuel pressure is 58 PSI? Isnt that 4 bars?
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Old Feb 18, 2021 | 08:35 PM
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Originally Posted by bonesbrakr
I thought the LS fuel pressure is 58 PSI? Isnt that 4 bars?
yes ur right.
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Old Feb 18, 2021 | 08:42 PM
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Originally Posted by helga203
yes ur right.

Y’all are right. My brain was on autopilot there for a sec.


I fixed my post

Last edited by bradleyss14; Feb 18, 2021 at 08:44 PM.
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Old Feb 19, 2021 | 08:56 AM
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Thank you sooo much for your input!
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