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07-10-2022 | #1 |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Plenum pull scope creep
I've done 'bout everything 'cept port the TB and sleeve the cylinders and camming to my 5.7L LT5 including removing the secondaries, but have never heard of anything referred to as "power plates". What is/are they?
Bypassing the TB coolant path is a legit trick: Coolant by-pass does reduce intake heat a teeny bit. As Dom said, welcome to the "rabbit hole" of the quest for eking out performance tricks. (I plugged my TB coolant (as well) over a decade ago and never had a moment's regret - tho I can't point to an isolated 'before n after' result to justify it specifically. But, combined with a number of tricks (porting by far having the most significant effect), they all add up!
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
07-10-2022 | #2 |
Join Date: Jul 2006
Location: Illinois
Posts: 116
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Re: Plenum pull scope creep
From what I remember, the Power Plates were made by AO Engineering. I might still have the original instructions somewhere with all the paperwork I got with the car when I bought it. These were installed some time between 1995 and 1998.
I'm attaching a couple of pics, but they look like some sort of phenolic resin type insulator that was intended to mitigate the heat soak into the plenum. I read a long time ago some people had hood clearance issues with these and I do see some marks on the underside of my hood from the ribs of the intake boot. It doesn't look like there were any other clearance problems.They're just under 5mm thick. |
07-10-2022 | #3 |
Join Date: Jul 2006
Location: Illinois
Posts: 116
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Re: Plenum pull scope creep
If the Power Plates actually make a difference and aren't just snake oil, I might be tempted to put them back on (but probably WITH gaskets this time ) but since I already have some scuffs on the hood I wonder if the silicone intake boot Jerry's sells would clear better than the stock one?
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07-31-2022 | #4 | |
Join Date: Jan 2009
Location: Gettysburg, PA
Posts: 247
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Re: Plenum pull scope creep
Quote:
Sent from my iPhone using ZR-1 Net Registry
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90 ZR-1 #0951 Bright Red (sold) 06 Z51 MN6 Velocity Yellow (sold) 2023 C-8 Z51 ELB WAZOO Member |
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