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A26B · 06-27-2017

Principal Advantage: Thermal insulator for plenum, to impede heat soak from the engine
Other Advantage: Marginal increase in air circulation under plenum, aids in cooling of plenum & DIS Module.

Disadvantage: 1/4" spacers frequently result in intake contact with underside of hood.
Disadvantage: Requires some bending of vacuum line to PCV top connector.
Disadvantage: requires 2 sets of plenum gaskets. & longer bolts

06-27-2017	#5
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,399	Re: WTB - Plenum insulator plates Principal Advantage: Thermal insulator for plenum, to impede heat soak from the engine Other Advantage: Marginal increase in air circulation under plenum, aids in cooling of plenum & DIS Module. Disadvantage: 1/4" spacers frequently result in intake contact with underside of hood. Disadvantage: Requires some bending of vacuum line to PCV top connector. Disadvantage: requires 2 sets of plenum gaskets. & longer bolts __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.