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 Valve covers

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Walterf



Posts : 70
Join date : 2019-03-23
Location : Daytona area, Florida

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PostSubject: Valve covers   Valve covers Icon_minitimeMon Apr 19, 2021 12:44 pm

1991 OCC.  Changing valve cover gaskets as part of preventive maintenance.  Understand that by 1991 the differences between the Chevy 305 and Olds 305 were gone in favore of a "corporate".  Rather than sandblast and paint original valve covers came across these but they're speced for SBC 305.  Will they fit without problem?

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Sprocket

Sprocket

Posts : 5897
Join date : 2008-11-04
Location : Palm Beach County

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PostSubject: Re: Valve covers   Valve covers Icon_minitimeMon Apr 19, 2021 2:42 pm

it is a Chevy 305 in all 91 B-Bodies (except for police cars, they got a 350) with center bolt, so yeah I would think they should fit.

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94Woody

94Woody

Posts : 2026
Join date : 2008-12-02
Age : 46
Location : Belleview,FL

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PostSubject: Re: Valve covers   Valve covers Icon_minitimeTue Apr 20, 2021 6:30 pm

They will "fit" but I only see one large hole in each cover. The driver side needs a smaller hole for the PCV Valve. Been a long time since I was under the hood of a TBI car but I believe the passenger side has a smaller hole in the factory one as well.
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Walterf



Posts : 70
Join date : 2019-03-23
Location : Daytona area, Florida

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PostSubject: Re: Valve covers   Valve covers Icon_minitimeWed Apr 21, 2021 9:26 am

good point, 94Woody. The 91 305 has a PCV grommet in each side. What's missing from these is the oil filler cap opening. They won't work. THX
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Fred Kiehl

Fred Kiehl

Posts : 5985
Join date : 2009-11-13
Age : 72
Location : Largo, FL 33774

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PostSubject: Re: Valve covers   Valve covers Icon_minitimeWed Apr 21, 2021 10:59 am

You can use a different oil filler. They make them with grommets on the valve cover, and a push in cap. I have that style of filler on my 454. The issue with these is that the extra hole would look odd without the "flat" to mount it.

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