raced a lt1 trans am tonight in my abody!
70AARcuda (Tony) has a thread going on now about a intake swap. He is running 10:68 with it on a 340.
Locomotion (Myron) is a class racer that is very consistent and a multi time division winner with his 360 powered Duster. He has been given print a number of times for his winnings.
Both of these fellas will tell you that an intake change can provide results good and bad. It's what the engine wants! Measure your heads port windows against the Intakes port windows. You can match up the ports as close as possible.
Ethier intake should show an improvement.