Pontiac - Street No question too basic here!

          
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  #61  
Old 06-23-2022, 06:15 AM
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Like Cliff has posted here time and time again these sounds can just be due to the fast closing ramps of some of these Cams which is why the noise seems to be coming from everywhere.

The sound of a valve tapping into its seat travels thru the rocker, push and down into the lifter .

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  #62  
Old 06-23-2022, 09:09 AM
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That's one thing many like about the Harold Brookshire cams. He always used a soft closing side and kept that within a certain percentage so the valves weren't slamming on the seats.

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  #63  
Old 06-26-2022, 11:01 AM
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Quote:
Originally Posted by PunchT37 View Post
Yep. Almost the same readings as mine. Used to be 17 at hot idle with 60 cruise. Now, 27 idle [in drive] and 70 cruise. About 32 idle in park, hot.
Yeah, that's the only engine here in the stable that has about 30 hot idle oil pressure. Everything else here has at least 40 hot idle psi and some don't dip below 45 psi.

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  #64  
Old 06-26-2022, 08:40 PM
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They all copied Duntov...

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