5.3 Rev and shift points for 2003

Could someone please help me out I have just bought a new Hypertech power programmer for my 2003 Silverado with a 5.3 motor, I am new at this so i am looking for some tip on what to do to increase my HP and run a better. :evillol:

93 octane
5900 Rev limit
Top speed H 128mph
shift points 1-2 +1mph
2-3 +8mph
3-4 +5mph
Shift Firmness-On

And that should do it

P.S. only do it this aggressive if you have Intake, Exhaust, Headers, and 160* tstat

Thanks For the info i need a better rear end how what would you suggest

Sorry Typo "now"

i suggest tryin to find a salvage yards and look for a 2500hd it has a 14bolt rear and is stronger than a dana 60. And if you dont know the dana 60 is vertually indistructable but it cost about 2200 bucks or you can get the 2500 HD which is stronger and it should only be about 800-1100 bucks

Thanks for the info this has been a big help

/\This should be a good basis for the small block V8's. Only way to truley know is to test at the track and see what works best for you as stated in the instruction manual that comes with the hypertech.

what is up with the speed-o!?

/\Awhile back I was going from Flagstaff to Phoenix and traffic was hauling ass so I took a pic of the speedo since that was the fastest I had ever gone.

5900 rpm's? Is that safe for the engine? I know you said turn shift firmness on, but can a 4L60-E take this?

The 5.3's were dyno'd at 6000, while continuously running a stock engine at these rpms would certainly not be good for it, occasionally shouldn't hurt it.

5900 rpm's? Is that safe for the engine? I know you said turn shift firmness on, but can a 4L60-E take this?

If it makes you feel any better, I'm shifting out the 6.0L at around 6400rpms. Only reason I'm not going up to 6500 is because I'm already maxing out the stock injectors, so I'm holding their until I get the 43lbers. The 4l60e will last alot longer with the firmness on. My first tranny lasted 126,000 with the firmness on, and it was still chirping second when I sent it in for the core charge. The only time the 4l60e starts to have real problems is when torque management is removed without a shift kit or at least a corvette servo. You should ride in a truck with 0% torque management sometime. It feels like an entirely different truck between shifts.

Thanks For the info i need a better rear end how what would you suggest
An Eaton rear end is the "only" way to go in these trucks. You will not break it, and if you do, it wasn't put in right. No way a bolt on truck will ever hurt an Eaton. :naughty:

My first tranny lasted 126,000 with the firmness on, and it was still chirping second when I sent it in for the core charge. The only time the 4l60e starts to have real problems is when torque management is removed without a shift kit or at least a corvette servo. You should ride in a truck with 0% torque management sometime. It feels like an entirely different truck between shifts.


Slo- Do you consider the hypertech tuner as a shiftkit? Do you know how much a vette servo would cost. Most importantly though, Shouldn't trannys last a hell of a lot longer than 126K. Thanks for your time.

Slo- Do you consider the hypertech tuner as a shiftkit? Do you know how much a vette servo would cost. Most importantly though, Shouldn't trannys last a hell of a lot longer than 126K. Thanks for your time.

The hypertech just increases the line pressure a little, so I wouldn't call it a shift kit, such as the transgo, but I really think it saved my tranny. A vette servo will run you about $15-20. Not alot of money at all and fairly easy to install. My tranny was shifting perfect at 126k. I had to send it in for a core charge on my built one. There is NO way it would have held this new setup. If you do decide to get the servo and have the shift firmness on on the hypertech, you will notice how much better it feels between shifts. If you decide to get a shift kit, remove the shift firmness from the hypertech. Too much line pressure will surely kill a stock tranny. They will hold alot of abuse. Trust me, I have a stack of timeslips from my old setup, and it never so much as acted like it was going to slip.

/\Awhile back I was going from Flagstaff to Phoenix and traffic was hauling ass so I took a pic of the speedo since that was the fastest I had ever gone.


not fair .....how come my speedo only goes to 100 MPH???

Can you tell me more about those corvette servos, like how many I need, how would I got about putting them in myself?

ryan that's a cluster from an escalade they read 120 and have a tranny temp gauge.

I heard that the reason the shifts were intentionally softened was because the 4l60E had a habit of puking its guts when they put it behind the 6.0L. Sounds like the dealer was giving me a load of crap.

If it makes you feel any better, I'm shifting out the 6.0L at around 6400rpms. Only reason I'm not going up to 6500 is because I'm already maxing out the stock injectors, so I'm holding their until I get the 43lbers. The 4l60e will last alot longer with the firmness on. My first tranny lasted 126,000 with the firmness on, and it was still chirping second when I sent it in for the core charge. The only time the 4l60e starts to have real problems is when torque management is removed without a shift kit or at least a corvette servo. You should ride in a truck with 0% torque management sometime. It feels like an entirely different truck between shifts.

I had a hypertech chip on my 01 Chevy 1500HD 6.0L but found it did not seem to give the truck as much of a kick as the super chip's one i had. So i bought a superchips one, I have it tuned to what i feel is allright. I was hoping that someone can help me set it up perfect, eather for regaul or Primium gas. I have it set on primuim right now, but 80-90$ a week is starting to hurt the books. any help would be great. Thanks!

Hypertech tuner is not a shift kit!!!! It just programs the tranny to shift firmer so that it doesnt slip. It does this by tightening up the line pressure. A shift kit would be something mechanical (not electric like a tuner) that enhances the amount of the line pressure that can be used in the tranny and hold it sufficiently!!

Since this is the shift points thread...I thought I would post up my newest shift points are set at 6500 with a 7000 rev limit. :biggrin:

Slo- Do you consider the hypertech tuner as a shiftkit? Do you know how much a vette servo would cost. Most importantly though, Shouldn't trannys last a hell of a lot longer than 126K. Thanks for your time.

I was thinking the same thing.. I have 2000 Silverado Z71 with 145K miles on it. I have not had any problems with the tranny.

It's really all in how you drive the truck. I went a ton of miles with the stock motor and limited track/racing appearances. I went almost a year on the fully built 60e with every weekend track appearances and alot of street racing.

93 octane
5900 Rev limit
Top speed H 128mph
shift points 1-2 +1mph
2-3 +8mph
3-4 +5mph
Shift Firmness-On

And that should do it
P.S. only do it this aggressive if you have Intake, Exhaust, Headers, and 160* tstat


What should it be if you only have intake? I have 2005 5.3l 4.10 crew cab Z71

93 octane
5900 Rev limit
Top speed H 128mph
shift points 1-2 +1mph
2-3 +8mph
3-4 +5mph
Shift Firmness-On

And that should do it
Would you apply the same settings to a 05 Z71 with 5.3, K&N intake, flowmaster exhaust?

thanks

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