how can i beat a 98 v8 mustang

[DVS LT1]

Originally posted by 99' Z-28
I wouldn't race him just yet tho, you can buy a 80 series flowmaster muffler. This muffler is proven to be the best for Firebirds and Camaros.

I've got that same one myself - sounds absolutely badass on my LT1 with Edelbrock headers.

Eh 99' Z-28, you're probably going to laugh, but my flowmaster has 3" outlet pipes that condense to 2 1/4" (!?!) to accomodate my 2 1/4" stock Z28 rectangular exhaust tips. I know it sounds crazy - literally - you can tell the exhaust is backing up cause the entire muffler and pipes fucking shake and rattle like crazy. But I really dig the sleeper effect my Z28 has. Besides the 17" ZR-1/SS style rims my car looks completely stock, and I've made believers out of quite a few C5 Vette's, Z-06's, and LS1 F-Bodies.

How much you figure I would gain by pulling those pipes off and going with 3" out all the way??

[flyguy86]

Yea i have a K&n filter with my CAI. should i get the exhaust first then the gears or the other way around?

[99' Z-28]

But whats this about a spool? I've heard of this before and don't get what you said about posi? My differential's posi clutch is actually worn out right now, and I'm debating whether to get an aftermarket performance replacement that will accomodate my stock 2.93 gears - or get a new one along with new 3.73 gears. But are you saying these would NOT give me posi traction??? I "had" that originally, why wouldn't I get it from a new differential (or what?). A 3500 high stall torque converter is another thing on my to-get list.

Well, a spool keeps the rear wheels spinning at the same rate or same time. Stock Camaro's or your mustangs don't have this, they have a spider gear which lets the right rear wheel only spin when stoped, kind of like limited slip diferential. Alot of racers and people who have their cars hoped up replace their rear-end housing with a ford 9 inch. There really isn't anything wrong with this. I did it just because you have more gear selections. You can put the 3.73 ration gears in, I'm not sure if this is an open gear of posi gear. When i said spool, you can buy spool kits and make it work with any gear ratio.

I've got that same one myself - sounds absolutely badass on my LT1 with Edelbrock headers.

Yes, flowmasters 80 series are real badass. I have the neighbors complaining about the noise all the time. When i drive by a police, i must let of the gas.

How much you figure I would gain by pulling those pipes off and going with 3" out all the way??

You are backing up too much back pressure downsizing your pipes like that. Thats a pretty big drop in piping. If i were you, i would have it done in 3inch pipe like you said and put 3.5inch tips on. You are lossing at the most 7hp with what you got, but if you open it up to 3inch you will the the true awsome sound of the 80 series and get the full horsepower effect. I say 3.5inch tips because i think 3 inch will look kind of small. 3.5inch and 4inch tips will give your exhaust a real deep ass tone that will shake all around areas and scare the 5.0 and 4.6 mustang boyz.

[flyguy86]

Should i go cat back or full exhaust? is there a difference in preformance

[flyguy86]

what exhaust would u reccomend for a 3.8 v6? I wan looking at the flowmaster and they really dont have anythjign for the v6. The 80 series says its for the v8s only.

[99' Z-28]

Should i go cat back or full exhaust? is there a difference in preformance

I don't think there is much of a power gain with a Cat-Back. Your muffler determines how much power you gain or lose. Don't waist your money on a Cat-Back unless your existing exhaust piping is in bad shape. You could buy a High Flow Converter as well.
I would go with just a muffler mod. A Z-33 Class RA554259 Ravin Muffler will probably be best for your V-6 Firebird. You can use an 80 series, but the 80 series makes more power with the V-8's than the V-6's.

[PWMAN]

Originally posted by 99' Z-28

A Z-33 Class RA554259 Ravin Muffler will probably be best for your V-6 Firebird.

Yes, RAVIN mufflers arw awsome but I don't know how good they'll sound on a V6. I know they are freakin loud with 2.5'' pipe on 350 camaro's.

[flyguy86]

With all the exhaust choices which one should i get? When i order does it come with everything i need or do i need to buy additional shit?

[PWMAN]

I don't think RAVIN makes exhaust systems, just mufflers. You have to go to like MIDAS or MEINEKE to have it custom put on. $$$

[flyguy86]

with labor how much you think it will cost all together?

[PWMAN]

Well how much of your exhaust system do you want done? Just the muffler back? That will be like 200-300 dollars.

[99' Z-28]

I believe Midas might carry that Ravin Muffler. They don't make complete exhaust systems, but you don't need a complete exhaust system. Pick you up one of those mufflers i told you about RA554259 and 3.5 inch tips.
They sound pretty good on a V-6. I have installed one on my sisters b/f Camaro and sounds awsome.

The Muffler costs $82 and some change.

with labor how much you think it will cost all together?

Don't worry about finding hangers and stuff for your muffler. It will cost you about $150 to have your OEM muffler and the Ravin Muffler installed. I would as first tho. If i were you, don't take it to Midas or Meineke to have it done. They will prolly charge you too much. Just a regular muffler shop is fine.

If i were doing it i would charge $110. $150 is a rough estimate.
-Good luck with what you decide to do.

[flyguy86]

thanks for the info i will go this week and have that done. How much of a gain do u think i will get? Should i consider gearing next?

[Jays_sho]

Do not use a spool on a street car please you will only break some thing.....use a locker system because when you make a turn the rear wheels turn at differant speeds and useing a spool will only break an axle.

[PWMAN]

Originally posted by Jays_sho
Do not use a spool on a street car please you will only break some thing.....use a locker system because when you make a turn the rear wheels turn at differant speeds and useing a spool will only break an axle.

Oh yeah I wanted to say that and forgot. Whoever told you to use a spool to get traction is a moron. Garaunteed to break axle in less than 3 days on a daily driver. Lockers can also break axles though, if you get an aggressive one like detroit or trac lok. Auburn make good limited slips, but you have to get the pro series not just the high performance. I used the hi performance cuz thats all they make for mine, it wore out in 4 years. I'm sure the pro is much better.