Buliding new headers

I've got to change headers..If I go with a regular type header,what size tubes should I use with a 580+cu.in A-headed engine? I'm really leaning towards building a set of zoomies.Is there any power loss with them? Thanks for any useful advice.

Back when I was getting ready to do mine, I talked with Tim Murphy and asked about the zoomies vs. regular collector headers, and he said that the headers would be better in my application, not sure about an asphalt drag application, but I'd bet that the headers would be the ticket.

I think you guys are right on the headers over the zoomies...but ,dang I think the zoomies would look awesome

Can't deny the cool factor of the zoomies. I think now would be a good time to get the blower mounted and then you would have a place for the zoomies.

2 1/4 -2 3/8 out the bottom side of the fender.JMO

cool40 wrote:2 1/4 -2 3/8 out the bottom side of the fender.JMO

x2

Dan you can go to summit or jegs and buy a tube chassis header kit for less than buying all the individual tubes and fit it to your car....

Rear Zoomies???



HAHA

cool40 wrote:2 1/4 -2 3/8 out the bottom side of the fender.JMO

x2 and I wonder if your headers you have on it were hurting the performance of the bigger engine you had in it.

IDT-572 wrote:

cool40 wrote:2 1/4 -2 3/8 out the bottom side of the fender.JMO

x2 and I wonder if your headers you have on it were hurting the performance of the bigger engine you had in it.

Blake I had the 2 1/4" ones on it ,and it ran exactlly the same?? If this new one don't run any better ...I'm gonna throttle stop the damn thing back to 6.50 to where I don't have to wear all the safety gear!!

the Coug wrote:

cool40 wrote:2 1/4 -2 3/8 out the bottom side of the fender.JMO

x2

Dan you can go to summit or jegs and buy a tube chassis header kit for less than buying all the individual tubes and fit it to your car....

Coug ,I bought a set from Jegs. I'm going to cut the flanges off and put new ones on them. That's a nice header kit they sell.If you have a chassis car or a roadster. They worked real well on mine.

56Tbird wrote:

IDT-572 wrote:

cool40 wrote:2 1/4 -2 3/8 out the bottom side of the fender.JMO

x2 and I wonder if your headers you have on it were hurting the performance of the bigger engine you had in it.

Blake I had the 2 1/4" ones on it ,and it ran exactlly the same?? If this new one don't run any better ...I'm gonna throttle stop the damn thing back to 6.50 to where I don't have to wear all the safety gear!!

Heck yea I remember you telling me that now.................... It's fixin to go, just get ready