Muffler advice for 468
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Muffler advice for 468
It's hard to find big block vettes with performance mufflers around here to listen to. So I'm looking to the forum for advice. It's a 69 convertible, the engine setup is a 468 with 215 heads with 2.19 intake, 1.88 exhaust valves and pocket ported, compression is about 9.75:1, 2" primary long tube headers, Edelbrock 396C intake (old high rise relieved dual plane), and a 870 Street Avenger. I'm looking for a muffler that sounds good but isn't too obtrusive, but also doesn't restrict this engine. I had the delta 50's on my 73bb, but they did sound pretty good but they were evidently pretty restrictive becouse I picked up a lot of power after I went to the high flow muffler sidepipes. So don't recommend those, becouse they will deffinitly be restrctive on this engine, but if I could get similiar sound quality with a lot more flow that would be great.
Thanks for any help
Pat Kunz
Thanks for any help
Pat Kunz
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
In three 69 Camaros, I run Dynomax Super Turbos which are just right for me. Flows are too loud for this old man (48) and plus I don't like the way they sound. The DST's flow great and have the old muscle car sound I like.
But I'd be willing to listen to a recommendation that's smooth, with a good deep mellow sleeper tone,..one that doesn't drone or over-power my Delco radio.
But I'd be willing to listen to a recommendation that's smooth, with a good deep mellow sleeper tone,..one that doesn't drone or over-power my Delco radio.
Last edited by 73, Dark Blue 454; Aug 30, 2006 at 05:27 PM.
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
Originally Posted by 73 LS-4
It's hard to find big block vettes with performance mufflers around here to listen to.
I am trying to decide also. corvettes sound different than other cars with same type of engine due to the fact the muffler is at the end of the pipe and you have no tail pipe. I was leaning towards the delta flow 50's
East bound and down...
Joined: Dec 2004
Posts: 987
Likes: 3
From: Jonesboro Arkansas
Your question is similar to one that I asked a few days ago. Here's a link to that thread: http://forums.corvetteforum.com/show....php?t=1476012
I have decided to go with Pypes' Race Pro mufflers. Good luck with your hunt.
I have decided to go with Pypes' Race Pro mufflers. Good luck with your hunt.
Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
I have Dynomax UltraFlos with an x-pipe under the differential. Although these mufflers are a straight-thru design, it's a quiet system. I think the X really helps keep the noise down. Anyway, here's a link to a video (it was shot in low light so it's really just a sound file):
Clicky
Clicky
Last edited by Brettmc; Aug 29, 2006 at 11:10 AM.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Thanks everyone for your replies. I've been considering the ultra flows for a little while now just haven't heard them in person on anything similiar to my setup.
Brettmc, thanks for the sound clip. Sounds about what I'm looking for, especially since you seem to have a similiar setup to what's in my 69. How big of a cam and what compression are you running? Also how is the interior noise while cruising with your setup?
Thanks again
Pat Kunz
Brettmc, thanks for the sound clip. Sounds about what I'm looking for, especially since you seem to have a similiar setup to what's in my 69. How big of a cam and what compression are you running? Also how is the interior noise while cruising with your setup?
Thanks again
Pat Kunz
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Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
Compression is low, probably in the 8s. When I bought this car, owner could give me no info at all on the engine specs. Interior noise is very low. There is no resonance, and, I can even hear the electric fuel pump at stop lights, and that awesome intake moan when I get in it. Cam is a Comp 274.
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Well I went with the Ultra Flow's. Just what I was looking for
They have a deep tone at idle, are ok at WOT, and are extremely quiet on the highway. Very similiar to the Delta 50's I used to have on the 73, but without the power loss, in fact I think it may have gained a few ponies over what was on the 69 when purchased.
Thanks
Pat Kunz
They have a deep tone at idle, are ok at WOT, and are extremely quiet on the highway. Very similiar to the Delta 50's I used to have on the 73, but without the power loss, in fact I think it may have gained a few ponies over what was on the 69 when purchased.Thanks
Pat Kunz
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,340
Likes: 2
From: Moro IL
Sorry just now getting back to ya, been on vacation. Didn't run anything fancy just the normal straight duals out the back. Wish I could post a sound clip for ya but don't have any equipment to do so.
Pat Kunz
Pat Kunz
