AJFink

I have a Edelbrock Olds Performer intake and Edelbrock Carb. with Electric choke.


Do I need the exhaust ports to remain open in the intake manifold or can I close them off?

svnt442

The heat crossover is there for more than the choke. If you will never drive the car in cold weather then block it off, otherwise don't.

Fun71

If you are asking if the openings on the TOP of the intake on each side of the carb flange need to be closed off, then yes.

One is for the hot air choke and the other is for an EGR valve. The intake should come with a block-off plate for the EGR (mine did) but I don't know if it would have one for the hot air choke as well since I have the choke heater installed on mine.

Allan R

1972 didn't have EGR.

Fun71

That is correct, but since he has an Edelbrock Performer intake manifold it has a provision for EGR so that it can work with all years of SBO engines and remain emissions compliant.

AJFink

Thanks Guys.


Was just wondering if I needed them. I'll leave it as is "open for the early and late season drives"