The 5.3l?

[jman_07]

So i noticed the Newer 5.3L engines have more horsepower my dads 2002 is only rated at 295 Horsepower how is the new one have more??? I heard they switched to Electric fans or something like that???

 

 

Also his 2002 Silverado from a stop cannot spin tires at all the 5.3L seems weak but i heard there is something in the computer that holds it back from spinning tires off the line what is it???

 

 

 

Thanks.

[stadt11]

He'll need a custom tune, it's the torque management & other nannies holding him back. For what I've read, the consensus around here seems to suggest going with BlackBear Performance for the custom tune by Justin. I'll be getting one from him next year. Even after the tune, your dad may still not be able to spin the tires, but will definitely have a better throttle-response, increased hp & better fuel economy.

[jman_07]

It just seems like 285 Horsepower is really weak for a V8 Engine so i dont know how could i pull 300 Horsepower without spending money on performance parts there is gotta be some little tweaks.

[C6Racer]

285 horsepower is actually a great improvement over the previous gen engines. The old 5.7L V8 put out 250 hp if I'm not mistaken. Even the 7.4L put out 290hp. The reason for more power in the new engines is because of revised programming and a different camshaft. Also, like someone already said, it won't spin the tires because of the torque management program. If you want to disable that you need to beef up your transmission or you will risk destroying it. 285hp is not weak at all. In the early 2000's it was a big deal if a V8 put out 385hp from the factory(the first Z06). Truck engines are designed for less horsepower, but more torque. Car engines are just the opposite, more hp with less torque. You won't get 300 hp from that engine without spending at least $250-$300. I have an AEM intake and Flowmaster exhaust which brought the power up to about 300. See my sig to read more details.

Another huge reason for the power being seemingly low is thanks to all the emissions regulations. Back in the late 60's a 5.7L V8 could put out 400hp without breaking a sweat.

[asilverblazer]

2002 was not so plagued by programming nannys as the newer ones.

[Woodcutter]

Every year manufacturers bump up horsepower ratings by 5-15 HP for their engines to stay competitive with other makers and claim to put out the most power.

 

A late 80s TBI 350 was only rated at 200-210 HP.

[jman_07]

So does my 2002 have torque management?

[C6Racer]

I'm willing to bet money that it does. My buddy's 2004 Avalanche has it and it has the same trans.