73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: 73c10Shorty on July 31, 2008, 11:12:52 am
-
Hey guys... my truck is a '73 with the stock 350/350 setup. I'm looking into getting a new exhaust system installed as the original one has some serious leaks. I'm thinking of going with front to back dual exhaust, with an x-pipe, and 36" glasspacks. What I'm not sure about is the tubing size. What is the recommended tubing size for my setup and what are some of the advantages and disadvantages?
-
2.25 or 2.5"
-
I would invest in a little better muffler than glasspacks. They have a very short life span before they start to become noisy and annoying. They usually sound pretty cool when new but a nicer muffler for yourt nice new exhaust would be a good investment.
For your set up if it's a daily driver the 2.25 might be a little more responsive. The 2.5 will flow better overall though.
-
I had my exhaust re-ran on my '82 bout a month ago, I can post pics if you want, I have longtubes with a 2½ dual exhaust with a 2" H pipe to balance the flow out with Super 40 Flowmasters, I'm very happy with it, and I can't wait to get the Vortecs, cam, and edelbrock on there to really open my truck up.
-
82Shortbed-
Do you have a sound bite of your setup? I would be interested in hearing how this sounds. Thanks.
-
82Shortbed-
Do you have a sound bite of your setup? I would be interested in hearing how this sounds. Thanks.
I can make you one if you want me to! Sadly, It'd probably be cell phone quality though, but I can try! PM me or reply on this forum if you want.
-
Hey... I'll take what I can get! I've searched so much I think I hit the end of the Internet. You can find motorcycle sound bites all over the place... but cars/trucks is another thing.
-
There are a couple of people that have posted theirs on here somewhere...
-
I had my exhaust re-ran on my '82 bout a month ago, I can post pics if you want, I have longtubes with a 2½ dual exhaust with a 2" H pipe to balance the flow out with Super 40 Flowmasters, I'm very happy with it, and I can't wait to get the Vortecs, cam, and edelbrock on there to really open my truck up.
why the smaller H pipe ??
-
You don't need an H pipe to be the same diameter as the exhaust. It's job is to equalize backpressure.
-
You don't need an H pipe to be the same diameter as the exhaust. It's job is to equalize backpressure.
i agree in lower RPM range's
-
Exhaust pulses happen at different times right? If you wanted better flowing exhaust you need to put larger exhaust on your machine. That's not the purpose of the H pipe. I always use a smaller diameter pipe for my H pipes. Regardless of RPM it serves the same purpose.
-
I got some pictures of the H pipe and i made a couple of videos on my cellphone, I can send em to your number if you have a video phone, but take note, the cellphone sound quality isnt as good as in person
-
my 28" glasspacks are 3+ years old and have not blown out yet...longer packs last a lot longer, especially on a stock engine..
-
Here's my H, and a pic of my super 40s, I like how the exhaust looks, and you can see it when the trucks parked coming off the headers.
-
Exhaust pulses happen at different times right? If you wanted better flowing exhaust you need to put larger exhaust on your machine. That's not the purpose of the H pipe. I always use a smaller diameter pipe for my H pipes. Regardless of RPM it serves the same purpose.
on a H i have them the same size so the pulse/wave is the same
i like X's better now and always mandrel pipe
-
Here's my H, and a pic of my super 40s, I like how the exhaust looks, and you can see it when the trucks parked coming off the headers.
wow your headers hang so low? what kind are they?
-
I have NO idea what kind they are, but I thought they came down pretty low too!
-
I have some videos of it, you can watch them if you have quicktime or a plug-in to play 3g2 files, if you want them. let me know.
-
82Shortbed-
Your exhaust sounds really good! I was going to attach the videos to this post but after I converted them to mpg they were too large.
-
Thanks man. I think the super 40s need a little break in, because it sounds even better now after some driving. It doesnt have that slap I was used to with a couple other cars I have had with duals.