GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Headers for 2001 4.8????

Thread Tools
 
Search this Thread
 
Old Jul 12, 2003 | 12:55 PM
  #1  
RacerBill's Avatar
Thread Starter
On The Tree
iTrader: (14)
 
Joined: Jul 2003
Posts: 105
Likes: 0
From: Johnson City, TN
Default Headers for 2001 4.8????

Hey everyone...I am new...so yeah i was wondering which headers would be the best to put on my truck....like I said I have a 4.8.....and how much are they?
Reply
Old Jul 12, 2003 | 01:40 PM
  #2  
hyper's Avatar
TECH Fanatic
 
Joined: Sep 2002
Posts: 1,617
Likes: 0
From: fresno, ca
Default Re: Headers for 2001 4.8????

well if u wanna do longtubes then u can go with asm headers, they seem to be a good choice with good power gains. if ur gonna go shorty headers, than just get jba or gibsons. thier gonna run u 400-500 bucks
Reply
Old Jul 12, 2003 | 01:45 PM
  #3  
RacerBill's Avatar
Thread Starter
On The Tree
iTrader: (14)
 
Joined: Jul 2003
Posts: 105
Likes: 0
From: Johnson City, TN
Default Re: Headers for 2001 4.8????

yeah i really want long tubes...also i have been reading and people have complained that asm coats come off and they rust up ....is that true?
Reply
Old Jul 12, 2003 | 02:10 PM
  #4  
TECH Junkie
 
Joined: Mar 2002
Posts: 3,019
Likes: 1
From: memphis tn
Default Re: Headers for 2001 4.8????

I've had ASMs on my Tahoe for more than a year.No problems with the coating,they still look as good as the day I bought them.
Reply
Old Jul 12, 2003 | 03:04 PM
  #5  
13 Second Truck Club
iTrader: (1)
 
Joined: Mar 2003
Posts: 4,094
Likes: 1
From: Pueblo de Nuestra Señora la Reina de los Ángeles de la Porciúncula
Default Re: Headers for 2001 4.8????

Go with TOGs then. They have a lifetime warranty if I remember correctly. Some guy on another forum told me his cracked twice(this guy has a seriously modded truck) and TOG sent him new headers, no hassle. Should be fine on a stock truck though.
Reply
Old Jul 12, 2003 | 03:21 PM
  #6  
IslandTahoe's Avatar
TECH Apprentice
 
Joined: Apr 2002
Posts: 369
Likes: 0
From: Honoulu, Hawaii
Default Re: Headers for 2001 4.8????

I'll throw in for FLP 1.75" Long-Tubes. 100% bolt-on w/ hi-flow cats. Most expensive option, but it does give alot of improvement thru-out the whole RPM range (SOTP).

Haven't tried any of the other models but ASM's have a big following. They require cutting and welding before the stock cats.
Reply
Old Jul 12, 2003 | 05:01 PM
  #7  
Hit Man X's Avatar
TECH Veteran
 
Joined: Mar 2003
Posts: 4,492
Likes: 0
Default Re: Headers for 2001 4.8????

If you gotta stay legal, Shorties will keep you there as will the Dynatech (FLP's) as I believe they are CARB legal too.

I really like The Other Guys headers, they have huge flanges (no warping!) and a killer warranty. The ASM's are also very nice and still retain the cats as do TOGs.

Shorties = ~$500
TOG = ~$700
ASM = ~$750
Dynatech = ~$1200

Are you going to be doing the install yourself?
Reply
Old Jul 12, 2003 | 06:41 PM
  #8  
RacerBill's Avatar
Thread Starter
On The Tree
iTrader: (14)
 
Joined: Jul 2003
Posts: 105
Likes: 0
From: Johnson City, TN
Default Re: Headers for 2001 4.8????

Yeah i will be doin it all. I am totally re-doing the whole exhaust. I al leaving the factory cats and true dual to magnaflows and dumps b4 the axles.....all 2 1/2in....how does that sound? .....and well i wanting to get other peops opinions a/b headers....are long tubes illegal?.......b/c i didn't think they were....neways i live in a lil' ole town in the mid of nowhere so i hope no cops say nething....
Reply
Old Jul 12, 2003 | 06:56 PM
  #9  
Hit Man X's Avatar
TECH Veteran
 
Joined: Mar 2003
Posts: 4,492
Likes: 0
Default Re: Headers for 2001 4.8????

Long tubes are not illegal, you just can't pass the sniffer with them in some areas...mainly larger metropolitain (sp?) areas. Well in you live in BFE, I'd go for the ASM long tubes.

If you wanna go true duals, Magnaflow makes a dual in/dual out 2.5" muffler with a built in X crossover. 12568 is the part number for the larger cased one, 11386 is the smaller cased one. That muffler will save you some cash over buying two mufflers and a seperate X-pipe. The smaller the case the louder the muffler will be.

Is there any particiular reason you want true duals? 2.5" into a 3" pipe will flow plenty for a N/A 4.8.

Dumps also resonate/drone down the freeway. I have a dumped 12588 (3" in/dual 2.5" out; 5x11x22) on my F-150 with some Hooker LT's and it drones pretty much like a Flowmaster. I can't wait to get my axle girdle on then I can get some tailpipes made!
Reply
Old Jul 12, 2003 | 09:11 PM
  #10  
6gear's Avatar
Launching!
 
Joined: Jun 2003
Posts: 200
Likes: 0
From: North Central Arkansas, Cave City
Default Re: Headers for 2001 4.8????

Hey everyone...I am new...so yeah i was wondering which headers would be the best to put on my truck....like I said I have a 4.8.....and how much are they?
I have gibsons on my 4.8, they fit really well and bolt up to stock pipes, they are stainless but mine are starting to rust, I think they was around $370 from truck performance
Reply



All times are GMT -5. The time now is 11:40 PM.