Need Info on Headers

[mjordan]

I am dropping a 69 350 Gen 1 into my 91 GMC 1500 5.7. Where do I find the right headers.

 

[PlayingWithTBI]

Any set of headers for a 91 truck. If you don't plan on using an O2 sensor, just plug off the bung. Here's an example

https://www.summitracing.com/parts/sum-g9014

 

[mjordan]

Any set of headers for a 91 truck. If you don't plan on using an O2 sensor, just plug off the bung. Here's an example

https://www.summitracing.com/parts/sum-g9014

But what I am seeing on the 91 headers is round ports and the heads I have are square.

 

[b454rat]

what heads?

 

[PlayingWithTBI]

But what I am seeing on the 91 headers is round ports and the heads I have are square.

Yeah, my heads are "D Port" and I used those headers. Well, the SUM-G9015 with A.I.R. but, they're the same thing otherwise. Unless you're building a fire breathing monster and port matching everything, no biggie. And if you were, I wouldn't use those old school heads anyway