Re: Intake manifold question [message #257437 is a reply to message #257416] |
Fri, 01 August 2014 11:49 |
thorndike
Messages: 406 Registered: January 2011 Location: Conifer, Colorado
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The page on the AppliedGMC site for the Rockwell manifold states: Built-in exhaust bypass. Does this mean that Rockwell already blocked/removed the exhaust crossovers and thus comes with the correct gaskets?
Bob
C Boyd wrote on Fri, 01 August 2014 07:16Hi Bob. It seems maybe that your PO is talking about resurfacing exhaust manifolds instead of intake manifold. The 455 MH uses a lower than stock intake manifold for floor clearance. To keep the floor level the only choices are stock MH, Toronado, or Rockwell Alum. You do need to remove the intake to block the exhaust crossovers. Mr Patterson has gaskets with the plates needed.
thorndike wrote on Thu, 31 July 2014 23:24One of the previous owners wrote in their notebook that they had the manifolds resurfaced and had a new gasket installed. Eventually, the records state that the manifold was too thin to resurface and just had a gasket installed.
As I have been considering adding the Howell Fuel Injection to the engine (455) I figured I would replace the manifold at the same time. I contacted a mechanic/racing friend of mine for advice as he has replaced many manifolds and installed FI systems. He suggested looking at the Edelbrock Torker ( http://www.summitracing.com/parts/edl-2730/overview/make/oldsmobile ) with the MSD Atomic Fuel Injector system.
Does anyone know if this would, in fact, work on our motors? If so, is there anything special that needs to be done to the manifold?
Bob
Robert Peesel
1976 Royale 26'
Side Dry Bath
Conifer, Colorado
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