Is it harmful to run open headers?
Is it harmful to run open headers? Is it better to have a exhaust sys. or can you actually run better with open headers. I wasn't sure because of a back pressure issue. What do you guys think?
back pressure is a non issue. Scavenging!!! You will lose a little low end torque and gain high rpm horsepower. If you want some of that torque back, get some 12-18 inch extensions with turndowns. You could have problems with your o2 sensors screwing up your A/F ratio due to them not heating up properly if you just run open headers. (too close to open air)
Well the car did pretty good. It ran a 7.2s@93.7mph open headers. My TD's came off when loading the car on the trailer. Needed to get to the track and didn't bother putting them on.
Trending Topics
6 & 8 Second Club
Joined: Aug 2006
Posts: 2,284
Likes: 0
From: Illinois, RT 66 dragway area
.
Data recorder switch, even when we're not racing, we always use it, we actually caught an exhaust spring going weak one time, just out scuffing up new tires.
Thanks for watching, hope you didn't fall asleep.
.
Data recorder switch, even when we're not racing, we always use it, we actually caught an exhaust spring going weak one time, just out scuffing up new tires.
Thanks for watching, hope you didn't fall asleep.
.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
Originally Posted by mrdragster1970
.
Data recorder switch, even when we're not racing, we always use it, we actually caught an exhaust spring going weak one time, just out scuffing up new tires.
Thanks for watching, hope you didn't fall asleep.
.
Data recorder switch, even when we're not racing, we always use it, we actually caught an exhaust spring going weak one time, just out scuffing up new tires.
Thanks for watching, hope you didn't fall asleep.
.
no not at all, but id like to give you a fan to get that smoke out of the cockpit after you burn out, but im not sure you want the extra weight.
ttt for the starter.
Im thinking of running open headers as well. My concern is the O2s and I also have a wideband that I would like to use. I guess you could use small extensions or sides and put a spot for the wideband there. How far from open air is good for the sensors in general?
Also it depends on if you get reversion and gives false 02 readings. On my MAC's, when I tried open headers, I put a bolt-on 6" extension on them to keep from false readings. However, I personally prefer the tone of my custom-length mufflers on vs. open headers...we saw no horsepower loss with them and they are only 2.5" versions.
This weekend, weather permitting, I'll be trying a different header combo and running open only until my new mufflers come in. Good luck. Dave
This weekend, weather permitting, I'll be trying a different header combo and running open only until my new mufflers come in. Good luck. Dave
Just run a bullet-style muffler off the collector. It'll flow just as well, give you the length you need, and quiet the thing down a little!
I run Edelbrock stepped LT's/3.5" Moroso spirals/flowmaster turndowns turned out to the side.
It's a very basic/clean setup IMO
I run Edelbrock stepped LT's/3.5" Moroso spirals/flowmaster turndowns turned out to the side.
It's a very basic/clean setup IMO
