Stick with midlengths or go with LTs?
Stick with midlengths or go with LTs? Okay, I bought my '94 Z with mac midlengths and y and flowmaster 3" catback with a cutout. I recently got a great deal on Mufflex 4" catback and Y pipe. The Y accepts longtubes and not my midlengths. Will I see a noticeable difference going from mids to LTs or should I stick with the mids and just use the 4" catback? In other words, is it worth my time and effort to pull the entire exhaust out and replace it with another that is "better"?
TECH Enthusiast
iTrader: (2)
Joined: Dec 2001
Posts: 658
Likes: 0
From: That Southern Fried Space City
Originally Posted by LT14LIFE JT
Okay, I bought my '94 Z with mac midlengths and y and flowmaster 3" catback with a cutout. I recently got a great deal on Mufflex 4" catback and Y pipe. The Y accepts longtubes and not my midlengths. Will I see a noticeable difference going from mids to LTs or should I stick with the mids and just use the 4" catback? In other words, is it worth my time and effort to pull the entire exhaust out and replace it with another that is "better"?
With that said, long tubes are great addition as long as you don't care so much about your ground clearance. I've had that setup you describe and it hangs pretty low. Depending on where you live this may make a difference or it may not.
I realize that flowmaster is one of the least desired of exhaust systems for F-bods, and I had intended on replacing it with the 4" catback regardless, but my questios is: "Is it worth it to replace my midlengths with LTs or will I not see enough hp gains to suffice all the effort"?
TECH Enthusiast
iTrader: (2)
Joined: Dec 2001
Posts: 658
Likes: 0
From: That Southern Fried Space City
Originally Posted by LT14LIFE JT
I realize that flowmaster is one of the least desired of exhaust systems for F-bods, and I had intended on replacing it with the 4" catback regardless, but my questios is: "Is it worth it to replace my midlengths with LTs or will I not see enough hp gains to suffice all the effort"?
Trending Topics
What you have to do is decide what you want out of the car, and create a plan. Don't deviate from your plan because of cheap parts. If you come across good deals that fit into your plan, consider yourself lucky. It never seems to happen for me.
I had to make the Long Tube versus Mid Length decision a couple of weeks ago. I found a smoking deal on a set of Mid Tubes but I had already planned on using Long Tubes. In the end I decided to stick to my plan, and spent over twice as much to get the Long Tubes.
To answer your question, I don`t think you wil get a noticable difference by changing headers. You could probably get a better bang for the buck with some drag radials or suspension upgrades.
I had to make the Long Tube versus Mid Length decision a couple of weeks ago. I found a smoking deal on a set of Mid Tubes but I had already planned on using Long Tubes. In the end I decided to stick to my plan, and spent over twice as much to get the Long Tubes.
To answer your question, I don`t think you wil get a noticable difference by changing headers. You could probably get a better bang for the buck with some drag radials or suspension upgrades.
Last edited by Razor_Blade; Dec 5, 2006 at 05:44 PM.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by Razor_Blade
What you have to do is decide what you want out of the car, and create a plan. Don't deviate from your plan because of cheap parts. If you come across good deals that fit into your plan, consider yourself lucky. It never seems to happen for me.
I had to make the Long Tube versus Mid Length decision a couple of weeks ago. I found a smoking deal on a set of Mid Tubes but I had already planned on using Long Tubes. In the end I decided to stick to my plan, and spent over twice as much to get the Long Tubes.
To answer your question, I don`t think you wil get a noticable difference by changing headers. You could probably get a better bang for the buck with some drag radials or suspension upgrades.
I had to make the Long Tube versus Mid Length decision a couple of weeks ago. I found a smoking deal on a set of Mid Tubes but I had already planned on using Long Tubes. In the end I decided to stick to my plan, and spent over twice as much to get the Long Tubes.
To answer your question, I don`t think you wil get a noticable difference by changing headers. You could probably get a better bang for the buck with some drag radials or suspension upgrades.
Originally Posted by rocket22
unless you have a killer motor i wouldn't go 4in exhaust it will hurt the performance of the motor.by not giving it enough backpressure.
It will have lose almost all bottem end and will run sluggish,I have a bolt on car with every bolt on,and I ran it with no exhaust it was turd.
A 52mm TB is biggest I would run on a bolt on,anything bigger is flooding it with air and not helping anything,also a 58mm wont fit a factory intake without boring the thottle body bore's bigger.
Who has the fastest blot on car with no exhaust.I'd like to see it.
A 52mm TB is biggest I would run on a bolt on,anything bigger is flooding it with air and not helping anything,also a 58mm wont fit a factory intake without boring the thottle body bore's bigger.
Who has the fastest blot on car with no exhaust.I'd like to see it.
Originally Posted by rocket22
Who has the fastest blot on car with no exhaust.I'd like to see it.
First off, it depends on what he means by 'no exhaust'.
Do you mean after the headers? Thats the same is running a cutout, and WILL give you a little more HP...
And rocket it right about the throttle body...
Don't go past 54MM on a bolt on car...
and have your original one ported, don't spend $200 on a new one, its just not worth it.
A local shop should do it for around 80-100 bucks and you don't have to recalibrate the linkage...
I know of a couple bolt on guys that went with a 58MM TB, and they needed a good tune for it to work like it should...
Originally Posted by rocket22
Who has the fastest blot on car with no exhaust.I'd like to see it.
Originally Posted by burnzilla
Couple things I got to say here.
First off, it depends on what he means by 'no exhaust'.
Do you mean after the headers? Thats the same is running a cutout, and WILL give you a little more HP...
And rocket it right about the throttle body...
Don't go past 54MM on a bolt on car...
and have your original one ported, don't spend $200 on a new one, its just not worth it.
A local shop should do it for around 80-100 bucks and you don't have to recalibrate the linkage...
I know of a couple bolt on guys that went with a 58MM TB, and they needed a good tune for it to work like it should...
First off, it depends on what he means by 'no exhaust'.
Do you mean after the headers? Thats the same is running a cutout, and WILL give you a little more HP...
And rocket it right about the throttle body...
Don't go past 54MM on a bolt on car...
and have your original one ported, don't spend $200 on a new one, its just not worth it.
A local shop should do it for around 80-100 bucks and you don't have to recalibrate the linkage...
I know of a couple bolt on guys that went with a 58MM TB, and they needed a good tune for it to work like it should...
TTT
Anyone else have any ideas or suggestions for me? I'm about to pull my car down and remove some weight as my winter project and I'm curious as to if I'm going to gain any hp going from mid lengths to LTs.
Anyone else have any ideas or suggestions for me? I'm about to pull my car down and remove some weight as my winter project and I'm curious as to if I'm going to gain any hp going from mid lengths to LTs.
IMO, 4" Exhaust is huge, too big. I have LT's, 3" ORY, and a 3" Bullet dumped right before the Rear Axle, no Cat. The LT1 has some wicked low end torque, so I would keep a decent Exhaust on it to keep the torque there. It doesn't get up into the high RPM's where a real open exhaust will help horse power.
On The Tree
Joined: Jan 2006
Posts: 161
Likes: 0
From: Leander, TX
4" is entirely too big especially on a bolt on car 
Bigger is not always better. Also they are right about the throttle bodies, it will affect your tune and usually not worth the money unless you are Heads/Cam and pushing alot of HP.
Bigger is not always better. Also they are right about the throttle bodies, it will affect your tune and usually not worth the money unless you are Heads/Cam and pushing alot of HP. 
Thanks for the advice, the_merv and Cammed95Z28. I've been comtemplating the whole time about this exhaust. I want that deep drone and no raspy sound, but I don't want to effect my performance. So don't go any bigger than 52MM TB and just get a better 3" catback and sell/trade the 4" mufflex? Man, that cahnges my winter plans..LOL