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4.8 tahoe

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Old 02-21-2007 | 09:55 PM
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hey guys

i have a 2004 tahoe with a 4.8L in it, and im using it to tow around my 87 buick grand national. it can tow it fine, but id like to pick up a little torque so its not breaking such a sweat on longer trips. i put JBA cat back on it and thats about it. ive search and all ive been getting is acronyms for the engines- all im really familier with is the LS1, LS2, l98, LT1, and LC2- im not really up on my truck engines.

and im a tech at a GMC dealer so you dont have to treat me like a baby
Old 02-21-2007 | 11:13 PM
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Originally Posted by ajt86
hey guys

i have a 2004 tahoe with a 4.8L in it, and im using it to tow around my 87 buick grand national. it can tow it fine, but id like to pick up a little torque so its not breaking such a sweat on longer trips. i put JBA cat back on it and thats about it. ive search and all ive been getting is acronyms for the engines- all im really familier with is the LS1, LS2, l98, LT1, and LC2- im not really up on my truck engines.

and im a tech at a GMC dealer so you dont have to treat me like a baby
well sir, depending on what you are willing to give up, or willing to pay, should determine your next course of action other than the cat-back.

with my experience, putting LT headers will kinda kill the down-low grunt you have... however, i dont have experience TOWING anything after putting the LTs on, so i couldnt tell you if it is just a SOTP feeling, but actual helper, or if it actually does kill the low-end a little... i would probably recommend to NOT get LTs unless you're gonna go all out and cam it, etc. i WOULD recommend however, a RADIX if you have not looked into it already. worked WONDERS on my truck... and if you MUST put headers, maybe go with some JBA shorties to match your cat-back? maybe find some mid-lengths? im not all up with the header hooplah, so i couldnt help you much there... anyway, hope i helped a little!
Old 02-21-2007 | 11:26 PM
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Pacesetter Long tubes, 918 springs and new retainers/locks/push rods, and a Comp Cams XR265HR 212 int./218 exh 0.558 int./0.563 exh. Get a mail-order tune if there's noone around you who can tune it on a dyno. www.nelsonperformance.com or www.hptuners.com

Check the links to the Right ------------------>

Good sponsors!

I've got the same JBA catback...sounds good, don't it?
Old 02-22-2007 | 06:26 PM
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yep its not obnoxiously loud- its got a nice deep tone to the catback

thanks for the help guys, im pretty much open to anything- i put a little money every week away for the truck and GN- i just put a kenwood DDX6019 in with nav last week- its awsome

but anyway ill look into the stuff you guys said
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