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LS3 intake questions

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Old Dec 4, 2009 | 07:40 PM
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Default LS3 intake questions

i am swapping my topend from my current FAST 92/95 and 243s for a set of L92s with an LS3 intake. will a PTM 92mm or NW 90mm fit the intake so i can use cables? also who knows anything about the flow characteristics compared to a ported 92mm? i know the rectangle ports flow better and just curious if the LS3 intake was on par for me. also how would i get my injector harness (98 Trans Am) to work with LS3 injectors? what is the flow rating of LS3 injectors. i know lots of questions. appreciate the help.
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Old Dec 4, 2009 | 07:58 PM
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What size engine, you do know the L92 head is not for anything under a 4.00 bore?

will a PTM 92mm or NW 90mm fit the intake so i can use cables? Yes
also who knows anything about the flow characteristics compared to a ported 92mm?
i know the rectangle ports flow better and just curious if the LS3 intake was on par for me. not sure
also how would i get my injector harness (98 Trans Am) to work with LS3 injectors? Harness connector adapters. http://fuelinjectorconnection.com
what is the flow rating of LS3 injectors. 41 lb.

i know lots of questions. appreciate the help.
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Old Dec 5, 2009 | 11:16 AM
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you're the man. i have a PTM 95mm TB that i wanna use on an LS3 intake and curious if i can open the hole to accept the TB? i have a forged 6.0 with a 4.005" bore.
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Old Dec 6, 2009 | 01:09 PM
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i was told 92-93mm is all the could get of of the L76's but not 100% sure on that

you could probally trade someone your 95 for a 92
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Old Dec 7, 2009 | 11:59 PM
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Originally Posted by smok'nZ
i was told 92-93mm is all the could get of of the L76's but not 100% sure on that

you could probally trade someone your 95 for a 92
I used a 92mm Fast and a 95mm Rev Extreme TB on a ported L76 intake, they both fit just fine. The intake hole was right at 95mm.
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Old Dec 9, 2009 | 11:58 PM
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Originally Posted by Caveman
I used a 92mm Fast and a 95mm Rev Extreme TB on a ported L76 intake, they both fit just fine. The intake hole was right at 95mm.


thanks for the info
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