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Home » Public Forums » GMCnet » replacing driver's side head on a 455 (Jumping into unknown waters and any help appreciated)
Re: replacing driver's side head on a 455 [message #362953 is a reply to message #362952] Mon, 22 March 2021 13:47 Go to previous messageGo to previous message
Matt Colie is currently offline  Matt Colie   Canada
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Registered: March 2007
Location: S.E. Michigan
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jhbridges wrote on Mon, 22 March 2021 12:03
If you choose to follow JohnLs suggestion and revert to exhaust manifolds, Make sure you have both manifolds in hand, with smooth surfaces and no cracks. One side is made of unobtainium, common only to the GMC motorhome fitted with a 455 engine.

--johnny
I have told, but I have not confirmed that Cinnabar can supply new exhaust manifolds.

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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