While we were doing the intake swap this past week, we noticed that the '416' TPI heads did not match up to the EGR port in the Edelbrock intake. Are '416' casting heads not EGR heads? They are mid-80's heads so the should have EGR provisions. How did the '416' heads handle egr?

The big question is will I pass the sniffer test when I try to re-register it this month?

Can anyone shed some light?

Bill

 

You can pass the sniffer test without AIR or EGR but it takes chip work. I doubt you would pass if you had visual inspection as well. My buddy chuck passed without EGR or AIR on his vortec TBI set-up. He put the stock air cleaner back on and really re-tuned the thing in the chip. As long as you have a cat you should be okay with a good tune. If your tune is way off then you wouldn't really pass even with it.

 

The exhaust crossover port is in the same place in 416s that it had been since 1955.

If anything doesn't line up with something, it's the intake.

It's not the "EGR port"; EGR didn't come along until 20 years after the port was put there. Just like it's not the "knock sensor hole".

 

I will pass visual because the EGR valve is in the correct place on the intake and hooked up to the EGR selenoid. So visually evertything looks ok.

If it should pass with a good tune then the dyno tune should do it if these guys know there stuff. Their reputation says they do.

 

Yea. It used to be the "choke coil warmer upper" port.