Affordable long tube headers

[Trenton Sauer]

I am looking for affordable long tube headers for my 1991 gmc 5.0L. I also am wondering if headers have the o2 sensor port and is it worth getting shorty headers? i want to run dual glasspacks and i wanna know what would be the best way before I order. Thank you

 

[Jorge6.5]

Have you checked summit. They will have many to choose from.

Duals really not worth it on a 305 unless you run small diameter pipe

 

[big_mike]

^agreed. I'd look at the longtubes into a y-pipe over duals on that motor.

If they don't have the O2 sensor bung where you need it that's a cheap fix at the exhaust shop.

 

[Trenton Sauer]

Have you checked summit. They will have many to choose from.

Duals really not worth it on a 305 unless you run small diameter pipe

what would i lose using 2.5 inch pipe?

 

[Jorge6.5]

You would lose your bottom end. A stock 305 only needs so much exhaust flow

 

[Jorge6.5]

what would i lose using 2.5 inch pipe?

I run dual 2.5" pipes on my vortec 454 and it's more then enough