The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)
-   -   Muffler Question (https://67-72chevytrucks.com/vboard/showthread.php?t=377984)

78 Chevyrado 12-26-2009 03:24 AM

Muffler Question
 
I'm pretty sure I'm going to get a new muffler pretty soon. I have a 2.5" single pipe from the y-pipe to the tip out back. Right now I have a dynomax 2.5" in/out turbo.

I'm going to get one of those cherry bomb vortex mufflers on it. My question is, should I just get the 2.5" in/out muffler or should I get a 3" in/out on my 2.5" pipes.

Would that make a difference in the sound? I'm not getting a 3" tailpipe, it'll stay at 2.5" either way. The 3" and the 2.5" vortex mufflers both cost the same and have the same outer case dimensions.

I have heard of mufflers for a 2.5 system actually having less than 2.5" internals. I'm pretty sure either one would work good, but I'd like which ever would be deeper sounding, if it would make a difference at all.

Thanks Guys

texasfunk 12-26-2009 03:53 AM

Re: Muffler Question
 
i'd just go with the 2.5, i actually think (if im not mistaken) the 3" will hurt performance, not ridiculous, but, yea, you get the drift :lol:

motornut 12-26-2009 08:18 AM

Re: Muffler Question
 
note some mufflers 3" only are 2.5 inside anyway and the outside the muffler pipe is 3"
(seen this doing 3" on my buddies 1972 Skylark).....same muff diff size pipe

Malo83 12-26-2009 02:30 PM

Re: Muffler Question
 
Quote:

Originally Posted by texasfunk (Post 3693696)
i'd just go with the 2.5, i actually think (if im not mistaken) the 3" will hurt performance, not ridiculous, but, yea, you get the drift :lol:

3" pipe actually improved my trucks performance ;) I went with 3" pipe all the way behind the "Y" new 3" cat and new Flowmaster 40 series 3" inlet and dual 2.5 outlet muffler dumped in front of the axle, this will give you deep and agressive sound as well as tripping car alarms in the parking lot :metal:

3r!c84 12-26-2009 05:18 PM

Re: Muffler Question
 
Quote:

Originally Posted by Malo83 (Post 3694080)
tripping car alarms in the parking lot :metal:

lol my 2.25 piping and 40s mufflers do that in the parking lot at school lol its sooo funny:lol:

its even better when it sets off one of the big lifted trucks alarm:metal:

texasfunk 12-26-2009 05:30 PM

Re: Muffler Question
 
Quote:

Originally Posted by Malo83 (Post 3694080)
3" pipe actually improved my trucks performance ;) I went with 3" pipe all the way behind the "Y" new 3" cat and new Flowmaster 40 series 3" inlet and dual 2.5 outlet muffler dumped in front of the axle, this will give you deep and agressive sound as well as tripping car alarms in the parking lot :metal:

yea, but he's saying just a 3 inch muffer, not all the piping, i was always told from the drag racing people(buncha old car guys my dad hangs with :lol:) if your gunna use 3 inch muffler, use 3 inch pipe, for better performance, but i guess it really only matters if your a serious racer :lol:

78 Chevyrado 12-26-2009 06:37 PM

Re: Muffler Question
 
Thanks for the replies. Yeah I always just get the muffler the same size of the pipe, but I had been reading on mufflers and some people like to do this, and some don't. Guess I'll just stick with the 2.5, as it'll cost less to install if he doesn't have to swedge the pipes out to fit. Thanks guys!


All times are GMT -4. The time now is 05:59 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com