Originally Posted by rebel
This is mine as cast. I measured the port from the point it starts to form the port, to the size at the flange base, its 3x larger at the plenum.


Those runners look quite a bit different than newer models. It would be interesting to hear Indy's thinking on what the various changes were intended for.

Last edited by Harry's Taxi 2; 04/06/22 12:12 PM.
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940.