how much difference is there in the stock exhaust and the 80 series flows

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92 25th annv. camaro
midnight black
stock 305 tbi
t-tops

89 camaro
carburated 305
bored .030 over
flat top pistons
bigger valves
heads and block shaved
spoiler
tinted windowshuge white chevy symbol on back
92 stock rims
92 ground effects
www.geocities.com/thirdgenerationcamaro

 

as far as how well the muffler flows...i would have to say that the flowmaster outflows the stock...how much i don't know exactly, but alot...as far as how much you will get by just replacing it...not much because the exhaust will still be restricted up until that last chamber...but it will probably change the sound of your car anyway.

 

Flowmaster 80 muffler is almost hollow..

-- Joe

 

I just got my 80 series in June. I bought it from jegs.com On their website it said that you would get 30 more horsepower from it, but I think that that is a little high. From my own experience I think that I gained about 15 to 20 horses. The difference is definately noticable over the stock exhaust and the sound is much better and deeper, in fact mine is still getting louder everday. I highly recommend it as a great replacement. I think that it is the best replacement for your muffler besides going for a true dual exhaust setup which is very difficult because of clearance issues. Have fun!

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1988 Carmaro RS

Bustit.Org

To see pictures of my Camaro, go to Bustit.Org and click on the About me page!
GTS Black outs for front
GTS Black outs for back
LeBra bra
K & N air filter
Flowmaster 80 series with Edelbrock Chrome tips

 

ROFLMAO....bustatc...you said u gained 15-20 hp...lol! I have the 80 series muff and i prob only gained 3-5 hp max...and im sure other people would agree with me...I would say the only way would could really gain about 10 hp is if your muffler was really messed up. LOL