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FAST Intake Requires Shorter Motor Mounts??

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Old 06-23-2024, 04:14 PM
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lght spd
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Default FAST Intake Requires Shorter Motor Mounts??

I have been coming across chatter on different platforms that the FAST 102 intake is bulkier that an LS2/LS3 intake and that the use of shorter motor mounts
(From Hinson Motorsports) and/or LS9 motor mount brackets are required. Is this on an individual basis or is this across the board for all LS2/LS3 applications?

If I need to get shorter motor mounts I will (begrudgingly) I don't like the poly mounts- too stiff and they don't have the dampening properties that the OE mounts have.

Would like a definitive answer before I attempt to install this intake.

Thanks for your insight.
Old 06-23-2024, 06:19 PM
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BigBlok502
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I had no issues installing mine whatsoever:


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Old 06-23-2024, 07:36 PM
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lght spd
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Originally Posted by BigBlok502
I had no issues installing mine whatsoever:


Old 06-24-2024, 10:10 AM
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PCMusicGuy
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I've never heard of needing different motor mounts to mount a FAST. The earlier FAST (92mm) would not fit without modifying the manifold or the firewall. There just wasn't enough clearance. Once they released the 102mm (modern FAST intake), they designed though particular fitment issues out. It is still a pain it the behind to get to rear most mounts, but that's normal. There is only so much room under the hood in the Corvette.

Last edited by PCMusicGuy; 06-26-2024 at 12:43 PM.
Old 06-24-2024, 05:10 PM
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rc51racer
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I remember changing the fasteners to a smaller head that were the valley cover ones under the FAST 102 so it would sit flush.
Old 06-24-2024, 10:22 PM
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rsb213
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Could be wrong but that might be a c5 thing…. not a c6 isssue.
Old 06-25-2024, 07:55 AM
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Orion2011
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I had a FAST lsxr102 on my LS2 C6. No issues, stock motor mounts.
Old 06-25-2024, 12:35 PM
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lght spd
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Originally Posted by Orion2011
I had a FAST lsxr102 on my LS2 C6. No issues, stock motor mounts.
This is great news! It sounds like this is the overwhelming concensus. Thank You everyone for your insight!!
Old 06-25-2024, 02:41 PM
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Spaceme1117
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If you need more hood clearance, you don't need to change your motor mounts. Lingenfelter has subframe spacers that give 1/4 inch of clearance.

A set of used ZR1 motor mount brackets give about 1/8 inch of clearance.
Old 06-26-2024, 02:52 PM
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AIR_RAM
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Originally Posted by lght spd
This is great news! It sounds like this is the overwhelming concensus. Thank You everyone for your insight!!
I'm still intrigued to learn there are "shorter" motor mounts... effectively lowering the center of gravity... can't be a bad mod at all!!! Unless there are clearance issues else where...

lower mounts may be a better mod than the intake itself!!!

SPEED SAFE NICK

Old 06-26-2024, 06:57 PM
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grinder11
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Originally Posted by rsb213
Could be wrong but that might be a c5 thing…. not a c6 isssue.
I think you're correct. I know that fitting the MSD on an LS7 in a C5 requires altering the firewall, and, IIRC, maybe lower motor mounts, both. Tony Mamo told me this himself, and he is very much in the know. As for a FAST on a C6, IDK....

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