open headers or mufflers

[THMPN73]

will running my headers open on my 360 help my et or would it be better to have the exhaust bolted up?

[Chryco Psycho]

generally open headers will help , idealy you wnt to use an extension on the header though around 18" long to maximise performance

[deputycrawford]

Many bracket racing classes say you have to run through mufflers. Some tracks are in close proximity to other commercial locations and have complaints of noise. They will also mandate mufflers. Check with your local track first. Then Hammer Down Driver.

[daytonalo]

Just make sure carb has the correct jetting , open tubes = go up in jet size

[69bananabeast]

I've got electric cut-outs on mine so when I run open headers I would have to tune the carb to run better?

[Ghoste]

That or find and accept a compromise jetting.