SouthernPatriot94

I've got a set of bronco headers and am wondering if they'd fit my f150. Yes the headers are for a V8 and so is my truck But my question is, i'm gonna run a true dual on it. Should I go with a 3in all the way back, or would that give me a decrease in power? If so what size should I run?

Flare side crazy

they will fit your truck and a 3in all the way will hurt your power ive heard running 2.25 is the correct size but im sure others will chime in

sdmartin65

Headers are different between 302 and 351, most Broncos are 351.

Crownman

Go with a 2.5 on the pipe diameter. 3 inch wont give you anything over what the 2.5 will, but it could hurt performance letting the exhaust gasses slow down too much and you lose the scavenging. Also make sure to put in a cross pipe, whether its an X or an H configuration there should3 be one to balance things out.

SouthernPatriot94

I'll probably go with 2.5, and the cross pipe is what I needed to do anyways since I have 2 tanks with the front one hanging down. Anyone familiar with 2 tanks knows what I'm talking about lol