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wont burn out 5.3 TAKE 2

jackster06Z71

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jackster06Z71 Enthusiast

jackster06Z71

Posted
Posted

well i talked to wait 4 me and they said , theres nothing more they can do with the tune that i have , all my tm is gone. he said that my 5.3 is designed for high rpm power and torque , he said if i put some cams in it ,it would run completly different and give me the low end hp and torque i want. he advised Comp cams , 224 and 117 lob , not sure wut that means if some one could shed some light?? he said bout 60 hp gains and it would run alot better. anyone done this , and if so give me some advice and a price range you spent on the cams , thanks Jack :nopity:

HyperBuzzin Enthusiast

HyperBuzzin

Posted
Posted

Wish I could be of some help, but the only cams I've ever changed were in my dirtbike.

I was going to ask if ya emailed Comp Cams to see what they have to say about this, but THEIR SITE doesn't seem to have a 'Contact Us' link. They do have a phone # though. Maybe give it a try ....

CAM HELP® Phone Number: 1-800-999-0853

Rammer Enthusiast

Rammer

Posted
Posted

First of all, you only have 1 cam in the engine. Second, Most aftermarket cams move the "power band" higher up the rpm scale not down lower and will require custom tuning for it to run correctly. I don't know anything about the cam you mentioned, so do you homework on it.

Mark_in_Tulsa Senior Enthusiast

Mark_in_Tulsa

Posted
Posted

Well I can tell you right now 80% of the problem is your gearing in your rear end, and that dual exhaust. Those together are ruining your take off power.

 

Can you hold the brake down, and rev it up to about 2000 RPM's or so, and then release the brake, and floor it and make it peel out?

ZZ327 Senior Enthusiast

ZZ327

Posted
Posted
Well I can tell you right now 80% of the problem is your gearing in your rear end, and that dual exhaust. Those together are ruining your take off power.

 

Can you hold the brake down, and rev it up to about 2000 RPM's or so, and then release the brake, and floor it and make it peel out?

 

 

 

 

What kind of rear end gear do you have jackster? if what ^^^ he said doesnt work, ( it should try to start spinning or you arent doing something right. :nopity:

Mark_in_Tulsa Senior Enthusiast

Mark_in_Tulsa

Posted
Posted
Well I can tell you right now 80% of the problem is your gearing in your rear end, and that dual exhaust. Those together are ruining your take off power.

 

Can you hold the brake down, and rev it up to about 2000 RPM's or so, and then release the brake, and floor it and make it peel out?

 

 

 

 

What kind of rear end gear do you have jackster? if what ^^^ he said doesnt work, ( it should try to start spinning or you arent doing something right. :)

 

 

 

 

 

I believe he said he has 3.55 or worse. I can't remember. But I know it's not 3.73, or 4.10.

ZZ327 Senior Enthusiast

ZZ327

Posted
Posted
If i remember right from an old thread he has 3.42's

 

 

 

 

 

ahh hes doing it wrong then, i have 3.42s I ve got mine slighty

sideways on accident before. an mines the 295 HP 5.3L

 

every time Ive spun em over I was at around 3K rpm though. and It slipped to 5K when I got sideways!

jackster06Z71 Enthusiast

jackster06Z71

Posted
  • Author
Posted

well ive tried many times , and so has my friend , when its wet i can get them to spin but its like somethings holding it back , whether its on power or the rpms are limited im not sure , but in the rain it will power brake , but slowly until it gets to a certian rpm , then it just takes off and the speedometer needle shoots up . i have 3.42 , i dont see how just changing my muffler would make me loose enough power to burn out . I used to have and 03 4.3L and i could light them up , but this truck wont do it . i mean not that i want to destroy my tires evey time i stop , but i just dont understand wuts up. wait 4 me told me that the 5.3L was designed for high rpm power , and that a cam that was made for more low end power would help, idk much about cams, but i dont see the point in spending a bunch of money to burn my tires up, whether or not wait 4 me is right , i still dont know whats goin on. one think that i noticed , if its wet and i power brake it , it wont do it unless there is not much brake applyed at all . i could push it half way down and rev the motor and slowly let off til theres not much brake applyed at all and then they will spin. i have drum rear brakes , do know if there ajustable or not , is there any one else in here with a 06 5.3L that has this problem?? just curious ...........Jackster :):flag:

Wingnut Senior Enthusiast

Wingnut

Posted
Posted
well ive tried many times , and so has my friend , when its wet i can get them to spin but its like somethings holding it back , whether its on power or the rpms are limited im not sure , but in the rain it will power brake , but slowly until it gets to a certian rpm , then it just takes off and the speedometer needle shoots up . i have 3.42 , i dont see how just changing my muffler would make me loose enough power to burn out . I used to have and 03 4.3L and i could light them up , but this truck wont do it . i mean not that i want to destroy my tires evey time i stop , but i just dont understand wuts up. wait 4 me told me that the 5.3L was designed for high rpm power , and that a cam that was made for more low end power would help, idk much about cams, but i dont see the point in spending a bunch of money to burn my tires up, whether or not wait 4 me is right , i still dont know whats goin on.  one think that i noticed  , if its wet and  i power brake it , it wont do it unless there is not much brake applyed at all . i could push it half way down and rev the motor and slowly let off til theres not much brake applyed at all  and then they will spin. i have drum rear brakes , do know if there ajustable or not , is there any one else in here with a 06 5.3L that has this problem?? just curious ...........Jackster :)  :flag:

 

 

 

 

Power braking is going to be difficult no matter what....Think something along the lines of "brake balance controller"...Or something like that.

 

3:42's are most likely what's killing you on the bottom end. But I bet you get well over 20 mpg going 60 mph.

 

Most of the aftermarket exhausts out there have a negative effect on low-end torque.

 

My .02 anyway.

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