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Re: [GMCnet] Oldsmobile 455 heads G vs J [message #324396 is a reply to message #324394] Tue, 26 September 2017 13:39 Go to previous messageGo to previous message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma:
Senior Member
You guys are confused. The K a heads have the large valves and ports
combined with a smaller combustion chambers. They are NOT induction
hardened, nor are the valves anything exotic. They are not the ideal head
for heavy duty use. More suited for light weight high performance use. W-30
option and 4-4-2, Hurst Olds, etc.
The J and G heads are what you want for motorhomes.
Jim Hupy

On Sep 26, 2017 9:50 AM, "roy keen" wrote:

> I had Ga heads that were small valve with hardened seats and rotaters. Not
> all Ga's are large valve.
> --
> Roy Keen
> Minden,NV
> 76 X Glenbrook
>
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