Well I have read alot about Flowmasters on this sight positive and negative. I took my 67 Convertible in on Thursday to have the exhaust put on. I had no idea what to put on... I didn't want it loud but I also did not want it quite. The muffler shop I took it to recommended either the Flowmaster or the Dynomax Super Turbo. After much debate I said what the hell and went with the Flowmaster muffler. Boy am I glad I did!!! The car is NOT too loud at Idle. It has no resonation at any RPM, and it is not annoying to drive at highway speeds. I don't know how the people who say these mufflers are too loud have their exhaust set up but here is how mine is : I have Jet Hot shorty headers, 2 1/4 aluminized pipe to the muffler, 2 chamber mufflers and 2 1/2 tailpipes exiting behind the rear wheels. I have a 96 LT1 ( fuel injected) out of a Vette with the overdrive trans and 4.56 gears in a 12 bolt posi. oh... and a little boost of N2O.

Are they the delta flow two chambers or the std. flowmasters?

standard 2 chambers

Palvey, I think you are one of the lucky ones. I really believe it depends on engine mods. I have noticed if you run a more agressive cam (read - not stock) the vivratation and drone of the Flowmasters get worse.

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Mark
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95

2 1/4" headpipes help to calm things down also.

I run 3" headpipes, Dr Gas X-over, Flowmaster 3-chambers, and 2 1/2" tailpipes. It has the dreaded drone at 2200 RPM.

The tone changed a lot when I swapped cams. I went smaller on the cam and the drone decreased.

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Click here to see see my car and hear 5-speeds. http://www.geocities.com/casanoc

I would have to say its because of the 2&1/4inch pipes and mufflers.Definately not the best for performance with a 350.

[This message has been edited by mutant 68 (edited 09-12-2000).]

Well my car is a convertible and it is next to impossible to get anything bigger through the brace... and besides it is a computer controlled engine and needs a little restriction to perform at its best.

palvey,
396,headers, 3in. pipe, 2 chambers, turndowns. Not of the problems others have encoutered either. Matter of fact, it's only LOUD when I want it to be. Otherwise it just rumbles enough to set off car alarms http://www.camaros.net/forum/biggrin.gif


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"Laissez Le Bon Temp Rouler' Cha!"

"Jungle" Jim
Team Chevelle
70SS396 & 70 Malibu
"I don't drive FAST, I just FLY low!"


[This message has been edited by JungleJim (edited 09-12-2000).]

What kind of headers do you have Palvey? Who makes them? you said they are shortys, do you have a part number?

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http://sites.netscape.net/1969ss/homepage

I bought the headers from a street rod dealer here in my town. The headers were in a box from Jet hot coatings. They are the short headers street roders call Camaro subframe headers. They exit at the back side of the motor not in the center like most shorties.

I am also trying to decide what mufflers to purchase. I want it loud at an idle but do not need the extremely load blast at full throttle. I currently have glass packs right off the headers with 3" inlets and full pipes to the bumper. After changing cam, heads and compression ratio the volume from the glass packs easily doubled. Who likes what? I was thinking of a single chamber Flowmaster or similar.

Hi guys- I guess I'll throw my 2 cents in if it's ok. I've got the 2 chamber Flowmasters on my 69 Nova. (don't know what I'll put on the Camaro yet) I have a .030 over 350 w/ 2.02 fuelie heads, a .525 lift hyd. cam, 10:1 comp., minor head porting and 1-5/8" Hooker Comps. The exhaust is 3" back to the mufflers, and 2-1/2" from the mufflers out to the bumper. The mufflers sit just ahead of the rear axle, and I have a 2-3/4" crossover 10" behind the collectors. I think it sounds awesome, and I don't have that annoying "drumming" sound. I think stepping the exhaust down 1/2" helps to keep the exhaust gas speed up so you don't get the reverberations. It's the same principle as stepped headers. And as a bonus the 2-1/2" tailpipes don't scare away the 5.0 Mustang boys! Later- Pete