INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

New**looking for advise tahoe 4.8 motor needs more power**

Thread Tools
 
Search this Thread
 
Old Mar 22, 2009 | 11:51 AM
  #11  
danny_c's Avatar
Thread Starter
Registered User
 
Joined: Mar 2009
Posts: 14
Likes: 0
Default

Originally Posted by jophuss36
it's ok you always want something More LOL
is a stall recommended for a daily driver? Im not hitting the drag strip or anything, i just want to have the power. In case some ford powerstroke comes along lol or a range rover. My budget is 3 grand. Parts, machining, porting, balance and blueprinting i can get at a huge discount. I just need a recipe of some sort or and idea of what it takes. I have a 5.3 crank laying around would that be worth dropping in. I can get rods and forged pistons at the fraction of retail cost. Should i look into that. Should i punch out the bore? thats the info i need. I already know that i need a good cam, headers, CAI and a true computer tune.
Reply
Old Mar 22, 2009 | 12:15 PM
  #12  
v8
17,16,15,14,13,12,11 Drvr
iTrader: (10)
 
Joined: Aug 2003
Posts: 6,713
Likes: 0
From: Mont Belvieu, Texas
Default

Originally Posted by danny_c
I have an 04 tahoe with a whimp 4.8 motor. Looking for info on what or if any LS1,2,4 etc. parts can interchange over without to much of a hassle. My original plan was a supercharger kit but the horsepower gain per dollar ratio is not good. The only difference in from my 4.8 to a 5.3 looks to be the stroke hp figures are almost identical. The swapping in a 5.3 would be hopleess IMO. My buddy is selling me LS2 heads, manifold with tb fuel rail and injectors. Would this be useful to me? HELP lol
NO that stuff will make you loose compression, go get a cold air intake,u/d pulley, elect. fans,long tube headers with ory,custom tune,212/218 581 581 114 cam, magnaflow muffler and your good to go.

intake=300
u/dpulley=250
elect. fans=500 buy some used ones for cheaper
custom tune=500 you can find cheaper!!
long tube=1000 find some used for cheaper
cam,springs,push rods=700
muffler and work=250
that should get you the extra hp you need.
Good luck.
Reply
Old Mar 22, 2009 | 12:15 PM
  #13  
highroller02's Avatar
Teching In
 
Joined: Sep 2008
Posts: 48
Likes: 0
From: Hesperia,CA
Default

Well i think everyone will tell you if your gonna do a cam you gotta do a stall unless you go with a small cam and you can port and polish your heads maybe mill them,and you could bore out the 4.8,I dont know if its the same as the 5.3 block but if it is Im pretty sure you could bore it out to a 5.7. but if your gonna do all that you might wanna look into a 6.0 swap.
Reply
Old Mar 22, 2009 | 01:01 PM
  #14  
v8
17,16,15,14,13,12,11 Drvr
iTrader: (10)
 
Joined: Aug 2003
Posts: 6,713
Likes: 0
From: Mont Belvieu, Texas
Default

oh yeah if all else fails use the search button up top to the right!!!
Reply
Old Mar 22, 2009 | 01:14 PM
  #15  
jophuss36's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Feb 2009
Posts: 356
Likes: 0
From: nw Indiana
Default

I have a 3400ish stall in my truck and it didn't keen that it's not going to move untill 3400rpm it's just not going to grab completly untill then. My truck is very streetable still u do loose a mpg or 2, and don't plan on towing with a big stall when I redo mine I'm going to put in a 3700 I think. Also if you do a stall your going to want a nice trans cooler. You will probinly drop .6 seconds or more by adding a stall
Reply
Old Mar 23, 2009 | 11:02 AM
  #16  
danny_c's Avatar
Thread Starter
Registered User
 
Joined: Mar 2009
Posts: 14
Likes: 0
Default

So i have been on here for the past few days reading through all the threads. and yes i searched. So Here what i decided. I know i need long tube headers, CAI, exhaust, cams and all that other stuff. So my new question is what cylinder heads and manifold combo and a good cam will yield me the highest hp gains. Daily driver on 91 ocatne at all times. And im not going to be adding a stall anytime soon. Everytime i read a cam thread on here the stall issue comes up. So for the mean time no stall......
Reply
Old Mar 23, 2009 | 11:35 AM
  #17  
BlackGMC's Avatar
Resident Retard
iTrader: (31)
 
Joined: Jan 2006
Posts: 17,216
Likes: 20
From: Fort Worth - TX
Default

I just got threw swapping some PRC stage 2.5 5.3 milled to 58cc on my 4.8 and it made pretty good improvement! roll into the throttle in 2nd and it pulls pretty damn good! they also made my torque converter ALOT looser... I also have all the boltons, plus a decent size cam...
Reply
Old Mar 23, 2009 | 12:51 PM
  #18  
03tahoe22's Avatar
TECH Apprentice
iTrader: (13)
 
Joined: Sep 2005
Posts: 371
Likes: 0
From: Palm Beach, Florida
Default

HighRoller02 setup is probably the best $3000 spent for 400rwhp "CAI, Headers, nelson tune, 2600 stall, 220 cam, 125 shot dry kit"
Reply
Old Mar 23, 2009 | 01:13 PM
  #19  
danny_c's Avatar
Thread Starter
Registered User
 
Joined: Mar 2009
Posts: 14
Likes: 0
Default

Originally Posted by highroller02
Well i think everyone will tell you if your gonna do a cam you gotta do a stall unless you go with a small cam and you can port and polish your heads maybe mill them,and you could bore out the 4.8,I dont know if its the same as the 5.3 block but if it is Im pretty sure you could bore it out to a 5.7. but if your gonna do all that you might wanna look into a 6.0 swap.
I loooked into the 6.0 swap but i read somewhere io here that the 6.0 will only work with a 4l80E trans.
Reply
Old Mar 23, 2009 | 01:16 PM
  #20  
danny_c's Avatar
Thread Starter
Registered User
 
Joined: Mar 2009
Posts: 14
Likes: 0
Default

highroller 02...coold you share some insight on what CAI and headers did you use? Also how is the stall working for you. I might consider it. I put 50 miles on my truck everyday. Would you recommend the stall for daily use?
Reply



All times are GMT -5. The time now is 11:22 AM.