Tuning, Diagnostics, Electronics, and Wiring HP Tuners | EFILive | Hand Held Programmers | Stand Alone PCM's | Electronics | Wiring Diagrams

5.3L H.P and Torque output

Thread Tools
 
Search this Thread
 
Old Mar 6, 2006 | 02:39 PM
  #1  
inmywhitez's Avatar
Thread Starter
Launching!
 
Joined: Oct 2005
Posts: 240
Likes: 0
Default 5.3L H.P and Torque output

hey, i need some help! there is not a dyno in my hometown and i want to know how much power i possibly have. Stock is 295hp and 335 ft/lbs. With the mods i have, can any of you give me an estimate of what i have at the rear wheels? i am guessing i have 295 and 335 to the wheels.
Reply
Old Mar 6, 2006 | 03:17 PM
  #2  
trever1t's Avatar
2nd fastest 5.3 ECSB
iTrader: (14)
 
Joined: Oct 2005
Posts: 26,690
Likes: 1
From: NorCal
Default

Prolly a bit less than that. The throttle body spacer and the descreened MAF is not helping . Your losing low end torque with the duel 3" outs.
Reply
Old Mar 6, 2006 | 03:20 PM
  #3  
TIM Z's Avatar
11 sec. Truck Mod
iTrader: (12)
 
Joined: Dec 2005
Posts: 9,736
Likes: 4
From: OH IO :(
Default

your guess on rwhp might be close but id bet you have more tq, chevy high perf. mag did an 05 truck with 5.3- stock rwp was 249 h.p./298tq. THEN they added a JET tuner,JET M.A.F. and JET throttle body spacer and ended up with 284 rwhp and 358 rwtq. you have a way better tune and air intake and exhaust so i think your probably at least 300 rwhp and around 340rwtq. just an educated guess but someone with your mods might chime in. but they tested on a mustang dyno and i dont know how accurate they are.
Reply
Old Mar 6, 2006 | 03:22 PM
  #4  
TIM Z's Avatar
11 sec. Truck Mod
iTrader: (12)
 
Joined: Dec 2005
Posts: 9,736
Likes: 4
From: OH IO :(
Default

yeah, i think trever is right, you really should put that maf screen back in. and your exhaust might be a little big for a stock cube motor.
Reply
Old Mar 6, 2006 | 03:45 PM
  #5  
inmywhitez's Avatar
Thread Starter
Launching!
 
Joined: Oct 2005
Posts: 240
Likes: 0
Default

what would it do for me if i did put the screen back in?
Reply
Old Mar 6, 2006 | 03:46 PM
  #6  
getchusum99's Avatar
TECH Resident
iTrader: (1)
 
Joined: Mar 2004
Posts: 910
Likes: 0
From: Baton rouge ,LA
Default

weve all gone over the whole MAF screen arugument way too many times to say that thats hurting him, thats not been proven.but i think his guesses on hp and tq are close. plus i think CHEVY HIGH PERF exaggerated a lil bit with the jet stuff, i mean that is one of their long time advertisers.
Reply
Old Mar 6, 2006 | 03:50 PM
  #7  
TIM Z's Avatar
11 sec. Truck Mod
iTrader: (12)
 
Joined: Dec 2005
Posts: 9,736
Likes: 4
From: OH IO :(
Default

Originally Posted by getchusum99
weve all gone over the whole MAF screen arugument way too many times to say that thats hurting him, thats not been proven.but i think his guesses on hp and tq are close. plus i think CHEVY HIGH PERF exaggerated a lil bit with the jet stuff, i mean that is one of their long time advertisers.
yes, im sure they did exagerate, i was just trying to get some #s for this cat, but i disagree on the maf, i had mine descreened and had tons of probs with tuning so i bought a new maf and that solved my problems.
Reply
Old Mar 6, 2006 | 03:55 PM
  #8  
getchusum99's Avatar
TECH Resident
iTrader: (1)
 
Joined: Mar 2004
Posts: 910
Likes: 0
From: Baton rouge ,LA
Default

maybee you are right on the MAF messing with the tune,i hope i dont have that problem, im gettin my tuned soon and cant afford a new MAF right now, i cant stop breaking trannys lol.
Reply
Old Mar 6, 2006 | 04:00 PM
  #9  
TIM Z's Avatar
11 sec. Truck Mod
iTrader: (12)
 
Joined: Dec 2005
Posts: 9,736
Likes: 4
From: OH IO :(
Default

Originally Posted by getchusum99
maybee you are right on the MAF messing with the tune,i hope i dont have that problem, im gettin my tuned soon and cant afford a new MAF right now, i cant stop breaking trannys lol.
i got a new maf from SMC performance for 85$ , great deal, brand new GM takeoff, pm me if you need their #
Reply
Old Mar 6, 2006 | 10:42 PM
  #10  
chrisj6's Avatar
TECH Enthusiast
 
Joined: Dec 2005
Posts: 512
Likes: 0
From: Conway, AR
Default

I am going to say your going to be closer to 240hp/275 tq at the wheels.

Chris
Reply



All times are GMT -5. The time now is 08:57 AM.