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Username Post: Smog delete/air flow overhaul in a '77 Wagon questions
Senior Member
Posts 1768
12-18-20 07:26 PM - Post#2810311    

Back around 80-84, my boss had a new Chevy PU and he complained about the lack of power. He had headers put on it and said that it made a big dif. I bet that truck lost the cat in the process.

That PU was a few years newer than yours and it was hit harder by smog stuff than point, that headers can make a big dif on something like your motor.

That said, I wouldn't put them on as they can be a pain on a daily driver...he had gasket problems. Cats on GM cars, of that vintage were very restrictive...a high flow cat would really help you out.

The only thing that I'd replace the Q.jet with is fuel injection (about 900 on Summitt, I Think, for a 2bbl set.up).

You need a cold.air intake. On my VW bus, w.a 20R in it, it made a difference of 4 mpg.

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