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05-17-2021, 06:03 PM
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#1 |
  Drives: '86 IROC-Z '18 ZL1 Join Date: Jul 2019
Location: Arizona
Posts: 933
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consensus on aftermarket LT4 lids?
I know for a while there was a good uptick in aftermarket vendors coming out with lids besides Nitrous Express. Have any actually been *independently* tested to see if they make the gains they claim?
I was looking to port my stock blower come fall and was debating on going with an aftermarket lid or not. I also wonder why the lids aren't taller, of if that would run into a hood clearance issue or just wouldn't do anything. |
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05-17-2021, 06:12 PM
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#2 |
 
Drives: 2017 Silverado/2017 ZL1 Join Date: Aug 2019
Location: Jax/Palatka FL
Posts: 1,091
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In one word. Worthless
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05-17-2021, 06:21 PM
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#3 | |
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Drives: '86 IROC-Z '18 ZL1 Join Date: Jul 2019
Location: Arizona
Posts: 933
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Quote:
Thats what im kinda seeing. The only plus to the NX lid is the ports if you were to spray. |
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05-17-2021, 07:49 PM
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#4 | |
      Drives: 2024 CT5-V Blackwing Join Date: Sep 2020
Location: GA
Posts: 3,556
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05-17-2021, 08:45 PM
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#5 | |
 
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 4,193
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Quote:
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2020 ZL1LE A10.
LME LT4 390 short block, LME CID Heads, Kong E2650, FBO. 15" conversion, MT ET Street R 325/15. 100 octane: 1045hp/1055tq. 100 octane + Meth (1x10+): 1117 hp/1067 tq |
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05-17-2021, 09:12 PM
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#6 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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blower whine is a bit louder but not worth the $ unless you want to use the ports for meth...cosmetic reasons also I suppose
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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05-17-2021, 09:14 PM
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#7 |
 Drives: 2017 Camero ZL1 Join Date: Nov 2015
Location: Texas
Posts: 130
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OEM ZL1 has the tallest lid hence the consensus of aftermarket lids being worthless. Don't waste your money.
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2017 ZL1 A10
Dyno/Quarter Mile/Dragy 9.71@141.2 MPH so far. 2007 Z06 H/C/I/E Half Mile - 169 MPH. Sold. |
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05-17-2021, 09:38 PM
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#8 |
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Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,075
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A bit louder blower whine. Otherwise, expensive bling.
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2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm
Four that wanna own me Two that wanna stone me One says she's a friend of mine... |
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05-17-2021, 11:20 PM
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#9 |
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Drives: '86 IROC-Z '18 ZL1 Join Date: Jul 2019
Location: Arizona
Posts: 933
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I guess as a spin-off question, is it even worth removing that metal rectangle that's inside the lid?
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05-18-2021, 05:56 AM
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#10 | |
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Coupe Newbie
Drives: '23 CT5-V BW, '21 Corvette HTC Join Date: Jul 2011
Location: Columbus, Ohio
Posts: 3,465
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Quote:
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05-18-2021, 07:22 AM
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#11 | |||
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Drives: 2017 Silverado/2017 ZL1 Join Date: Aug 2019
Location: Jax/Palatka FL
Posts: 1,091
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Quote:
The video comparison below is hard to tell the difference but its there. (just for full disclosure the Rotofab and removing that plate happened at the same time.)
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