AVS2 650 CFM on a 383-2, tuning help needed

[CBODY67]

Unless you put on a new aluminum intake, you might need to clean out the carbon in the existing heat crossover. With time, they CAN become restricted and not flow like they should. A clean passage can ensure the modified valley pan gasket does what you desire it to.

Enjoy!
CBODY67

 

[edbods]

In a way wouldn't a restricted heat crossover also do what a smaller hole in the valley pan gasket as well? My intake is definitely a new aluminum one though.

 

[CBODY67]

The added carbon would act like a heat insulator, especially with the OEM divorced choke. Heat would not get to the thermostat to let the choke open quick enough. Seemed to be more prevalent on LA engines (than B/RB engines) if the cars were only used in town and never got onto the highway. With an electric choke calibrated well, no problems.

Enjoy!
CBODY67

 

[edbods]

I do have an electric choke so not too much of a concern there. Intending on getting a 3 pin oil pressure switch so I can have it only run when the oil pressure light is off.