Anyone have a link to something like this for sidepipe muffler inserts?
Copied from Ls-1 forum...

The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

http://forums.stangnet.com/archive/index.php/t-392314
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I use Hooker Max Flow inserts.

2 1/2" opening straight through.

 

Here is what I currently have on mine.
Reverse flow Hookers.
Anyway there are 2 versions BB and SB. Are these the BB or SB?
Id venture to say they are restrictive, yes. Cool photo though.

 

Thanks! I have been looking for some way to figure out what to put in my new Hookers. Old ones have rusted out and I'm pretty sure the inserts are either not going to come out or come out in pieces. Very helpful info.
Ed

 

That list is stock type mufflers NOT sidepipe inserts.
My books Say Stay Away from Louvered Core, go with Drilled Core.
I have been searching every archive known on the debate for pry 2-3 years now.
Im finally going to purchase some fresh sidepipes, pry drive around without inserts for a while and judge the response from neighbors ect.

 

Doh! Well maybe some info can be extrapolated from it, maybe.
I have listened to all the videos on youtube and the manufacturers sites, but most videos are of BB engines with modified cams. Mine is a stock 1975 350.
Read all the stuff on the Forum too. Can't figure out what to buy, and at $185 a pop, I'd like to get it right the first time.

 

I bought the glass pack Hookers with my side pipes. Choked it off bad.
I'm running a 468 big block with aluminum heads and bigger cam.
I didn't want to waste anymore money, so I made my own baffles.

 

What are you looking for? Quiet or loud or in-between?

 

I like what I have. They are semi loud, but not tinny when I rack them off. A nice rumble at idle. But, I don't want to loose a lot of HP as my 350 isn't that powerful to begin with. I think glass packs would pizz off the neighbors and maybe the police too. Nothing tinny.
If I measure the inlet and outlet of what I have, that may indicate what they might be?

 

this is what I have in mine. one on each side :

http://www.jegs.com/i/Dynatech/329/776-24302/10002/-1

 

Me too!

 

I could send you a video of a '69 BB with open Hookers that might dissuade you from trying.

 

Here's what mine sounds like with the Max Flows on a 385 stroker engine.

Sorry, bad video settings (slowed/jumpy), but the sound is good.

 

I have MaxFlows also.

 

If bad videos are OK, here's the open headers video I mentioned above. '69 427/390 with Hookers. Loud!

 

Now you got me started. This is my bomb with new 540 and Max-Flows. Yippee!

 

I see what you mean, quite loud. Crazy loud.

 

Sounds Great.
Ya I have a old gm tech worker about 3 blocks from me that builds stock cars up- from a stack of tubing, guy drives around with bare engine blocks in his town car. OPEN HEADERS over there, his engines wont even run at idle, only id say above 3K.
Sometimes i get him going when I rev up mine few minutes later there he goes. Probably laughs when i go by...

 

STS Baffles on 11:1CR 468 (525FWHP/550FWT) at idle.

 

The LS1 forum list of mufflers for sidepipe inserts is comical at best. Missing some.