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Re: [GMCnet] Re: Tips/steps to take before removing intake manifold [message #367883 is a reply to message #367880] Wed, 08 December 2021 17:02 Go to previous messageGo to previous message
Matt Colie is currently offline  Matt Colie   United States
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Registered: March 2007
Location: S.E. Michigan
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jkim.phd wrote on Wed, 08 December 2021 16:59
In terms of the exhaust block-off plates, I like to use the old original metal intake gasket/drip tray. I trace the opening on a nice relatively clean area and cut two rectangular plates with tin snips. Just being cheap but effective.

James
James,

If you are going to use the embossed steel gasket and block the exhaust cross-over you do not need the valley pan. The entire purpose of that pan was to keep the lube oil that the cam kicked up from splashing onto the hot cross-over that will no longer be hot.

Another issue that Dick Paterson kit has covered is that the compressed thickness of the intake gasket material has to be really close to the that of the block off plates. If you are going to cut your own block-ff plates, I strongly suggest that you make them out of a stainless steel of 312 or better.

Good luck with this and let us know how it goes.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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