Will this set up have enough backpressure I dont want to lose to much bottom end torqe. I have ASM Headers allready installed Im getting dual 2 1/2 into a magnaflow muffler dual 2 1/2 out the back with 18"x4" tips. I am running stock cats this is going on a 03 silverado 5.3.
http://i15.photobucket.com/albums/a3...lla/breeze.jpg 03 Silverado LS, 6.0 RcLb
Go: Radix 2.9, 100mm Idlers, GT2-3 Cam & Springs, Long tubes, 2.5'' duals, Cut outs, E Fans,
Built 4l65e, 2600 Conv, 3.90 Gears, Eaton Lsd, Caltracs, Tuned by F-Body Central
Show: Eagle boss 309, Toyo's 285/50s, SS Bumper cover & Spoiler, Roll pan, 2'' rear drop.
Track times 12.304 @ 110.30 with a 1.747 60'
Don't know much about back-pressure..........but geez
.....think those tips will be big enough?
FOR ALL YOUR WHEEL, TIRE, AND ACCESSORY NEEDS
CONTACT: EPLEY'S TOUCH OF CLASSIC 1-270-843-6892
OR TO GET ME PERSONALLY CALL: 1-615-943-6514
2000 Chevy Silverado 4.8L RCSB: smoked UPD, Flowmaster exhaust, De-screened MAF, Nelson 93 hot tune. Upcoming installs: trans-go shift kit, Eaton posi, billet servo, ported and polished throttle body...Near future: 6.0/4L80E install with 150 wet shot
which muffler from magnaflow. is it one of the hd muffs. if so you will be fine. 4" tips
04 supercrew 5.4 3 valve-magnaflow catback
formerly 02denali 12.79@107
Larger tips than the rest of your pipe is a good idea because it creates some resonace and a nicer sound, but 4" is a bit overkill, 3" might be a little better idea.
1 ton, 4600 pounds, 14.3@94mph any questions?
I'd go with some 2.25" piping.
I drove my truck around for a bit with open exhaust, on holy shit, I could hardly burn out in first, normall I can burn out at will in first and continue in second, not without exhaust.
just a thought,
allen
Nelson Performance
FastestTruckList.com
NP on Facebook
Youtube Channel
'94 Chevy Truck: 8.9 et, 408 twins
Um, what's your question now? Sounds like your setup is already done...Originally posted by 03silverado5.3@Sep 20 2004, 09:24 PM
Will this set up have enough backpressure I dont want to lose to much bottom end torqe. I have ASM Headers allready installed Im getting dual 2 1/2 into a magnaflow muffler dual 2 1/2 out the back with 18"x4" tips. I am running stock cats this is going on a 03 silverado 5.3.
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
The headers are on not the exaust. So it sounds like everyone thinks the tips are to big which would you use. The muffler is a 5X11X22" body 2 1/2 in & out PART#14568. I want my truck to run mid 13s along with the mods I have and Volant cold air, Electric fans, TT2600, 3.90 gears, And Im thinking the same comp cam 02 Denali has. I am hopeing that will get me there. Oh yea some Drag radials and TB spacer. HaHa. I appreciate youre advice.Originally posted by Hit Man X+Sep 20 2004, 10:03 PM--><div class='quotetop'>QUOTE(Hit Man X @ Sep 20 2004, 10:03 PM)</div><!--QuoteBegin-03silverado5.3Um, what's your question now? Sounds like your setup is already done... [/b]@Sep 20 2004, 09:24 PM
Will this set up have enough backpressure I dont want to lose to much bottom end torqe. I have ASM Headers allready installed Im getting dual 2 1/2 into a magnaflow muffler dual 2 1/2 out the back with 18"x4" tips. I am running stock cats this is going on a 03 silverado 5.3.
http://i15.photobucket.com/albums/a3...lla/breeze.jpg 03 Silverado LS, 6.0 RcLb
Go: Radix 2.9, 100mm Idlers, GT2-3 Cam & Springs, Long tubes, 2.5'' duals, Cut outs, E Fans,
Built 4l65e, 2600 Conv, 3.90 Gears, Eaton Lsd, Caltracs, Tuned by F-Body Central
Show: Eagle boss 309, Toyo's 285/50s, SS Bumper cover & Spoiler, Roll pan, 2'' rear drop.
Track times 12.304 @ 110.30 with a 1.747 60'
Man my wife just got home and I had her lay under the Truck holding the Exaust Tips up there they look Bad Ass. Do you think I should really go with 3" tips it seams they would look small.
http://i15.photobucket.com/albums/a3...lla/breeze.jpg 03 Silverado LS, 6.0 RcLb
Go: Radix 2.9, 100mm Idlers, GT2-3 Cam & Springs, Long tubes, 2.5'' duals, Cut outs, E Fans,
Built 4l65e, 2600 Conv, 3.90 Gears, Eaton Lsd, Caltracs, Tuned by F-Body Central
Show: Eagle boss 309, Toyo's 285/50s, SS Bumper cover & Spoiler, Roll pan, 2'' rear drop.
Track times 12.304 @ 110.30 with a 1.747 60'
Yeah, I don't like tips myself. I hide the tailpipes behind the bumper a la old Cadillacs/TownCars. Plus it limits resonation too. Tips act like a megaphone only.Originally posted by 03silverado5.3@Sep 21 2004, 04:13 PM
The headers are on not the exaust. So it sounds like everyone thinks the tips are to big which would you use. The muffler is a 5X11X22" body 2 1/2 in & out PART#14568. I want my truck to run mid 13s along with the mods I have and Volant cold air, Electric fans, TT2600, 3.90 gears, And Im thinking the same comp cam 02 Denali has. I am hopeing that will get me there. Oh yea some Drag radials and TB spacer. HaHa. I appreciate youre advice.
I think it's going to take a bit more than the 5.3 to get you into the 13s all motor. I like 02's cam but it lacks on the lift and could use a more aggressive lobe IMO. Basically I think there is better stuff out there on the custom end from Comp. Allen is a Comp dealer soooo... find out which lobes you prefer and have a cam ground from there.
An LS1 or 6.0 swap would probably get you there with more ease.
Oh yes, I have the similar muffler in my attic to install... DI/DO Magnaflow w/ built in X-pipe.
The superior man is modest in his speech, but exceeds in his actions. - Confucius
"He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel
'01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
'80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL
Let's face it, the red hair... makes 'em wet.
Hahaha I love it when the wives get involved!Originally posted by 03silverado5.3@Sep 21 2004, 04:08 PM
Man my wife just got home and I had her lay under the Truck holding the Exaust Tips up there they look Bad Ass. Do you think I should really go with 3" tips it seams they would look small.
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
Posting Permissions
Reply With Quote
