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Old 12-03-2019, 07:15 AM   #1
Drives: 2016&2010 6-speed SS
Join Date: Sep 2014
Location: Sapulpa, OK
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Lt1 valley cover with Lt4 blower?

Like the title says why cant you just block the hole on the lt4 blower off and use a lt1 valley cover?
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Old 12-06-2019, 05:30 PM   #2
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Drives: 2016 Camaro SS, 2009 BMW 135i
Join Date: Dec 2019
Location: Arizona
Posts: 10
It probably depends on your adapter plates. I just checked my lt1 with an lt4 blower and it has very minimal clearance. I think the PCV adapter on the valley cover would hit the snout as it sits now, you might have larger lt4 adapter plates than I or you might be able to grand the pcv adapter down a bit on the lt1 to make it fit. I am not sure if it would cause issues outside of fitment.

You will need to block off the hole on the bottom of the blower if you use the LT1 valley cover as it would cause a massive vacuum leak.
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