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Forum: Pontiac - Street 03-26-2023, 03:17 PM
Replies: 28
Views: 2,686
Posted By Steve C.
I had a set of 1969 #16 d-port heads that had...

I had a set of 1969 #16 d-port heads that had welded-in modifications for swirl developed by Pete McCarthy many years ago. Apparently he only did a few chambers with it and was experimenting, some...
Forum: Pontiac - Street 03-25-2023, 08:13 PM
Replies: 28
Views: 2,686
Posted By Steve C.
Thanks Paul. I guess that relates to the...

Thanks Paul.

I guess that relates to the John Marcella statement in my post #9


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Forum: Pontiac - Street 03-25-2023, 07:39 PM
Replies: 28
Views: 2,686
Posted By Steve C.
Related. Rocky Rotella measured the airflow...

Related. Rocky Rotella measured the airflow capacity of Pontiac intake manifolds on his flow bench. He used a cylinder head to establish a baseline figure and re-measured airflow with an intake...
Forum: Pontiac - Street 03-25-2023, 02:58 PM
Replies: 28
Views: 2,686
Posted By Steve C.
Opinion offered, and one that could generate...

Opinion offered, and one that could generate interesting conversation and does not represent any endorsement....


"I don't get to excited if the port stalls or backs up. I have a number or heads...
Forum: Pontiac - Street 03-25-2023, 02:06 PM
Replies: 28
Views: 2,686
Posted By Steve C.
Skips indication of turbulence in the...

Skips indication of turbulence in the 0.500"-0.600" range brings to mind a question. Do the squiggly lines on the left side of the flow sheet posted by the OP represent turbulence ? Same general lift...
Forum: Pontiac - Street 03-25-2023, 12:06 PM
Replies: 28
Views: 2,686
Posted By Steve C.
Note that max intake number was at 0.600" lift. ...

Note that max intake number was at 0.600" lift. Many are rated at 0.700" lift.


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