Sound of 180 degree headers on a Chevy V8

13:1 350, Ported Bowtie Phase VI aluminum heads, Small Herbert Solid cam, Gear Drive, Edelbrock Victor JR Intake, Holley 600 Double Pumper, Shoenfeld 1 3/4 180 degree crossover headers. 450 + horsepower. CP autocross Camaro

Category:

Autos & Vehicles

Tags:

• CP
• camaro
• SCCA
• 180
• degree
• headers

[Warblade118]

huh...I thing standard headers sound better, even though they don't make as much power.

[rayar66]

@Warblade118 It's all personal opinion. I also prefer the sound of standard headers but I wanted this car to sound different. When I build another car it will have standard headers and no gear drive. As far as 180 degree headers making more power, that is debatable. From the info I found it is harder to tune vehicles with 180 degree headers to make maximum power so it is very possable I had less power then with standard headers. any way I feel the difference would be minimal at best.

[rayar66]

@Warblade118 just an example. Pro Stock drag engines all use standar headers. Most of these racers have a big enough budget that they can and I am sure many have tried 180 degree headers but none of them are useing them. I am sure if they only found 1 or 2 HP with 180 degree headers that they would be using them. Even NASCAR. In the 80's some of the teams where expermenting with and using 180 degree headers but I can't think of any useing them now. If they made more HP they would use them

[citydriver]

@rayar66 reason they changed to "standard" headers is because they changed the firing order so that they would work with normal headers so that they wouldent need the 180s 180 headers are harder to make and take up alot of room

[rayar66]

@citydriver True that they did a 4-7 swap but that does not do the same thing as 180 Degree headers. The only way you can get evenly spaced exhaust pulses left and right with standard headers on a V8 is with a flat plane crank.. Remember the old Ford 302 having a different fireing order then the 351W. It was because it essentially had 2 cylinders swapped just like a 4-7 swap cam on a chevy. Just moved the uneven pulses elsewhere.

[XR4turbo]

Can you take more videos of the car? Like how it sounds accelerating?

[rayar66]

Just look at my pager. I have quite a few in car videos that have been posted for more then a year now

[stangredemption]

@Warblade118 Really? you think better on stock? I love that different note added. Sounds more high and different

[Euphorica]

@rayar66 any rules in nhra or nascar that doesnt allow 180 headers? you never know. racing series have lots of rules and regulations.

that said nhra has used the same formula for a long time and it isnt necessarily because its the all out fastest.

[importsstillsuck]

@rayar66 I read somewhere they figured out they can get the same benefits of 180 headers with well designed exhaust...like well placed cross overs for example

[Warblade118]

@rayar66 wow, 2 paragraphs of exposition from a little comment? I'm not trying to be rude or anything but you're preaching to the converted. I've read quite a few detailed articles on the science behind different types and styles of headers already. Interesting stuff.

[VDZRIDER]

@xr4turbo

Your talking about flat planed cranks versus a cross planed crank....sorta a little vague with 90 degree and 180 degree, like you were talking about the angle of the banks...