Custom Exhausts

Hey everyone, I am new to this forum. Well, as some teenagers have it these days, they get their passed down cars. Luckily enough, I got my mothers 1999 S-10 blazer. Pretty clean, car. Fun to mess around with (like racing around a neighborhood doing 65, almost rolling the blazer, while racing a buddy in his Jeep Cherokee;)) I have plans for this car though. I've gotten through the play around period and I am ready to work on it. I plan on putting a sound system in her. After that I plan on giving it a new exhaust system. I am currenty studying to be a Auto-mechanic, and I have the privledge of going into shop afterschool, with access to MIG/TIG, Oxy-Accyteline (sp?) welders, and metal benders, whatever I really need to work on my car. I know how to weld quite well. I was wondering, does anyone have good plans for a custom exhaust? I am really looking to for an exhaust plan that would bend the exhaust out behind the rear tires, like the new Silverado's. Also, a materials list would be greatly appreciated.
Thanks,

-TheQuin

The piping and everything can stay put, just get a good single in / dual out and run dual tail pipes.

DO NOT put a dual exhaust on a 4.3L.

The piping and everything can stay put, just get a good single in / dual out and run dual tail pipes.

DO NOT put a dual exhaust on a 4.3L.

May I ask why I should not put a dual exhaust on my 4.3?

Because it is not needed and is a complete waste of money and time on a 4.3L.

You need a little backpressure for your engine.

You will actually see poorer performance with a dual on that engine.

I just cut the muffler out, replaced it with pipe, and put a chrome tip on it, sounds badass, like a 5.7L Tahoe.

I just cut the muffler out, replaced it with pipe, and put a chrome tip on it, sounds badass, like a 5.7L Tahoe.

Sweet thats pretty much what I meant by custom exhaust. I really meant custom pipe. That is my goal for this Blazer, LOUD.

Agreed, BlazerLT. These engines will suffer greatly if there is no back-pressure at all. Dual exhaust is also dangerous to install, as it comes too close to brake and fuel lines on the driver's side. If it's a 4.3 CPI V-6 - sticking to the stock 2.25" pipes with the single outlet by the passenger side is best. When you bore of the noise and the tickets you start collecting because of noise infractions, bolt on a Ravin 55, FlowMaster 40, or even a FloPro 570 series with center inlet, offset outlet to maintain that rough rumble - but slightly tamed ride. Nothing like wide open exhaust to get troopers hand delivering little gifts to you every 10 miles on the freeway. ;)

Sweet thats pretty much what I meant by custom exhaust. I really meant custom pipe. That is my goal for this Blazer, LOUD.

Regative, replacing the piping will give you no results.

Keep the stock, slap on a Ravin Z33 and it will be loud.

What size of a muffler would you guys recommend?

What do you mean, the piping?

Seriously don't put a muffler in, it cost me like 65 bucks to have my muffler cut out and have a piece of pipe put there, along with a chrome tip and it sounds better than any flowmaster.

Seriously don't put a muffler in, it cost me like 65 bucks to have my muffler cut out and have a piece of pipe put there, along with a chrome tip and it sounds better than any flowmaster.

Poor advice, the engine needs proper exhaust flow resistance to run properly.

My truck runs excellent

My truck runs excellent

See you in a few K miles with busted out wrist bearings and scored/burned cylinders. Oh, and that little marble knocking you hear under your hood is not poor quality gas. It's your F*scked up "no back-pressure" exhaust solution tossing the computer for a loop.

*YOU NEED SOME* backpressure for the system to function normally. Long term divability problems may arise like - broken rods and fuzzy, white-fouled Oxygen sensors down the road. Use your head for something other than a hat-rack and do a little research on just how the GM CPI/TBI works in these trucks, and CSFI injection. Do the math and theory - then stand here and tell us how your truck runs "excellently" with a straight pipe. Tampering that badly with exhaust velocities also plays havoc with your valves and the seats in the heads. Hopefully you designed and built your engine around your exhaust "power" mod my friend...

My only clue as to how thoughtless you are is telling people how excellently your truck runs and sounds on a straight pipe. Nice, very nice. Please fill us all in on the other details on how you built the rest of the engine up to deal with running so out of spec; please, if you would be so kind? :evillol:

I *detest* poor advice in a forum where a bad idea can become cannonical so easily...

(Lets BlazerLT take back the soapbox for now)

The Catalytic Converter allows for enough backpressure. I really don't give two sh*ts what you read on the internet I asked several mechanics aout having this done before I finally had it taken out, now the engine breathes about 10 times better.

Your truck's funeral. I will refrain from further comment.

Yeah I need to know what size piping would be best. Also, I couldn't find any ravin z33 on ebay, so if someone could give me a URL that would be grand.
-TheQuin

That's funny, then why do Firebirds and Mustangs that drag race still have mufflers on them.

i have a 91 blazer with a tbi motor and a borla exhaust, its a pretty straight through muffler but it runs well without any problems, however i do also have a holly throttle body and a edelbrock intake manifold, so itll get up and go when i want it to, to the exhaust problem though, ive never really had problems with the motor, but i think id like to put duals on it with a X or H pipe in it, it should help flow, but if back pressure isnt good enough, shouldnt you just go with a smaller pipe?

LOL, why go duals in the first place.

i would go dual exhaust for only one reason, more power, it free's up the exhaust flow, and as for the back pressure thing, i would use slightly smaller pipes so there is back pressure. the faster you can get the exhaust out, the faster you can get the intake in, therefore more power

Lol, time to go to auto class again bro.

Dual exhaust does NOTHING for a 4.3L nor does it "create more power".

Why the hell would you go to the cost of dual exhaust, dual mufflers and go to smaller piping when you can just use what is there.

You really need to learn about what you are talking about.

Pretty clean, car. Fun to mess around with (like racing around a neighborhood doing 65, almost rolling the blazer, while racing a buddy in his Jeep Cherokee;))

You do realize that this makes you an idiot correct? What happens when the little kids are out playing while you and your friend play Fast and Furious? Or what about when you do roll the Blazer into somebody's house? I will have no sympathy for you if you wreck it and kill yourself. I hope you lose your license. :mad:

you would be suprised what dual exhaust would do for you when its workin with other performance parts on the blazer, so far i have a holly throttle body, an open air cleaner, an edelbrock intake manifold and i have it chipped, i also have planned to do duals like i said, a cam kit and probably port and polish the heads.

Maybe with that setup and mods it might be a good idea, but you never stated that earlier.

On a standard engine with maybe a cold air intake a dual exhaust would be a huge waste of money.

i did say what i have on there now before, but i didnt list what i wanted to do, duals would probably help me now, but they would be more benificial in the future when i get all the upgrades i want done first.

i did say what i have on there now before, but i didnt list what i wanted to do, duals would probably help me now, but they would be more benificial in the future when i get all the upgrades i want done first.

Yes, but after you stated to other with normal unmodded engines that they should go with duals. That it was agood idea etc....

Get your story straight.

Blazing rice, do you have kids, if so, do you let them play in the road at 1am? didn't think so. I could careless if you call me an idiot or not, everyone makes dumb decisions. Kind of like your parents choosing to concieve you. And I don't have sympathy for dropping the bomb and you gooks either.

Blazing rice, do you have kids, if so, do you let them play in the road at 1am? didn't think so. I could careless if you call me an idiot or not, everyone makes dumb decisions. Kind of like your parents choosing to concieve you. And I don't have sympathy for dropping the bomb and you gooks either.

It's pretty sad that you have to brag that you drive like a moron, but you have to come on here with your racial slurs as well.

Sign of a true idiotic ass that is as usefull as a tit on a bull.

I just hope someone drives like you and runs you off of the road.

how much back pressure does a glass pack create?

Enough dor a proper running engine.

would it affect it good or bad. i do like the sound. its a flowtech by holly. 19" long and 2.5" in and outlet.

Enough for a proper running engine if you would fixc your CPI and nutkit once and for all.

Stop worrying about the exhaust and worry about your fuel system problems.

i'm not worried about it. just wanted to know the info.

It's pretty sad that you have to brag that you drive like a moron, but you have to come on here with your racial slurs as well.

Sign of a true idiotic ass that is as usefull as a tit on a bull.

I just hope someone drives like you and runs you off of the road.
Remeber when you were 16? I'm sure you made a few mistakes here and there somewhere along the line also.

When I was 16, sure I made mistakes but I didn't go around bragging about driving recklessly and then throwing racial remarks once someone says I was acting foolishly.

Just grow up. Or go to a teeny forum where you can talk to the rest of your kid friends and impress them with your complete lack of common sense and maturity.

When I was 16, sure I made mistakes but I didn't go around bragging about driving recklessly and then throwing racial remarks once someone says I was acting foolishly.

Just grow up. Or go to a teeny forum where you can talk to the rest of your kid friends and impress them with your complete lack of common sense and maturity.
Whatever man, I know what mistakes I've made, and I regret making them, I just got to defend myself. I'm about to back down to anyone, I also don't even race the blazer anymore, burn up WAAY to much gas, money I'd rather spend on other things.

Whatever man, I know what mistakes I've made, and I regret making them, I just got to defend myself. I'm about to back down to anyone, I also don't even race the blazer anymore, burn up WAAY to much gas, money I'd rather spend on other things.

And this is a sign of maturity setting in.

Good for you. :)

i was just always told that duals was one of the biggest mods on a normally aspriated car and the bigger the engine the more power you can create, ill admit, im not a 4.3 fanatic, i just happen to have one and the ambition to do stuff to it, you know, do what you can with what you have, if i had the choice, i would have a 350 in there. but you seem to be the guru, so ill leave you be and give people advice, you know how little mine counts to people like you who know everything.

i was just always told that duals was one of the biggest mods on a normally aspriated car and the bigger the engine the more power you can create, ill admit, im not a 4.3 fanatic, i just happen to have one and the ambition to do stuff to it, you know, do what you can with what you have, if i had the choice, i would have a 350 in there. but you seem to be the guru, so ill leave you be and give people advice, you know how little mine counts to people like you who know everything.

Wow, can't take the right advice can you.

350 and a 262 are not the same thing nor do they require the same exhaust system.

i know that a 350 and a 262 arent the same thing, however ive just always learned that dual exhausts help things, the faster you can get the exhaust out, the faster you can get fuel mixture in, therefore faster engine, to an extent though, but the difference between the 350 and the 262 isnt as different as you think, for the most part, they share some parts, and the 262 is basically a 350 minus two cylinders.

i know that a 350 and a 262 arent the same thing, however ive just always learned that dual exhausts help things, the faster you can get the exhaust out, the faster you can get fuel mixture in, therefore faster engine, to an extent though, but the difference between the 350 and the 262 isnt as different as you think, for the most part, they share some parts, and the 262 is basically a 350 minus two cylinders.

You need to learn basic engine dynamics again.

Most of what you said is completely wrong.

Remeber when you were 16? I'm sure you made a few mistakes here and there somewhere along the line also.

I made mistakes too. I'm 20. I'm not Asain. I just was just letting you know that racing in residential areas at any time of day (or night) is generally a stupid thing to do. I street raced my Blazer, though I never did it in populated areas. We used a 5 lane, desolate road after 11 PM. And even then we rarely took it past 60 mph. Just exercise a little more caution next time, that's all I'm saying. My high school sweetheart was killed by a 16 year old guy racing through the neighborhood. And he was doing 40 mph when he hit her.:disappoin

what is wrong about what i said, the 350 shares many parts with the 262 and the 262 is basically a 350 minus two cylinders, being that the cylinders are probably interchangable with the 350. go look it up seeing as that you never have anything else better to do than critisize most people on here and call them stupid. as for duals, we have been over this, it helps exhaust flow, therefore would help intake, what part am i mistaken in all of that?

what is wrong about what i said, the 350 shares many parts with the 262 and the 262 is basically a 350 minus two cylinders, being that the cylinders are probably interchangable with the 350. go look it up seeing as that you never have anything else better to do than critisize most people on here and call them stupid. as for duals, we have been over this, it helps exhaust flow, therefore would help intake, what part am i mistaken in all of that?

Thanks for insulting me.

Hey, if you have a problem with my advice, then leave it.

Maybe I should strap a 4 inch exhaust to my 4 cylinder seeing by your mind thought, it will bring majic power to my car.

look, the only reason i insulted you is because i fealt insulted myself, and im not so retarded to think that a 4 inch exhaust on a 4 cylinder would work, it wouldnt even work on a v-8 unless it was a diesel. if it makes you feel any better im sorry, but i really did feel insulted by your remarks, and i think others have an opinion here too, did you ever stop to think you may be wrong, have you ever tried putting dual exhaust on a 4.3 yourself?

look, the only reason i insulted you is because i fealt insulted myself, and im not so retarded to think that a 4 inch exhaust on a 4 cylinder would work, it wouldnt even work on a v-8 unless it was a diesel. if it makes you feel any better im sorry, but i really did feel insulted by your remarks, and i think others have an opinion here too, did you ever stop to think you may be wrong, have you ever tried putting dual exhaust on a 4.3 yourself?

Nope, nor would I put the cost into duals on a V6. Maybe upgrade the single piping to 2.5 or 2.75 inchm but I would never waste money on all that hardware on a normal engine.