440 exhaust system

[chad72duster]

Just want some opinions .

Situation Mild 440 with 480 lift cam kb flat tops and cast heads 2.14 1.81 valves running out TRI Ys Into 2 1/4 pipes.The tranny is a street fighter and the car has 3:55 gears.

How much gain if any would 2 1/2 or 3 inch pipes give me. The 2 1/4 exhaust on the car is good we are just wondering if it would be worth it in performance as compared to cost.

Any suggestions

 

[AdamR]

2.5" would be good, 3" may be over kill. I dont know how much gain you'll see over the 2.25 though.

 

[OldVart]

If your current exhaust system is in good sgape, keep it. I don't think you'll see any really appreciable HP gains for the dollars spent. Once this system goes, then put on the 2 1/2" pipes.