Exhaust Tubing Size?

[73c10Shorty]

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?

[Captkaos]

2.25 or 2.5"

[VileZambonie]

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.

[82Shortbed]

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.

[73c10Shorty]

82Shortbed-

Do you have a sound bite of your setup? I would be interested in hearing how this sounds. Thanks.

[82Shortbed]

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.

[73c10Shorty]

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.

[Captkaos]

There are a couple of people that have posted theirs on here somewhere...

[comp]

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 ??

[VileZambonie]

You don't need an H pipe to be the same diameter as the exhaust. It's job is to equalize backpressure.

[comp]

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

[VileZambonie]

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.

[82Shortbed]

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

[werewolfx13]

my 28" glasspacks are 3+ years old and have not blown out yet...longer packs last a lot longer, especially on a stock engine..

[82Shortbed]

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.