I have a 99 Silverado with a 5.3 engine. I have done the following mods. Can anyone give me a guess as to what my hp should be. I haven't had the time to dyno it yet. Mods: Volant cold air induction, poweraid throttle body spacer, Hypertech PPIII, Flowmaster exhaust and a power venturi from Mike Hamm. Stock hp is around 270+/-. Thanks for the help.

 

The 99's were weak due to the cam, so don't get your hopes up. Maybe 230 rwhp?

[ January 02, 2002: Message edited by: white53gmc ]</p>

 

id say u prob have around 250

 

250 hp at the rear wheels? that seems high dont you think.

 

My first dyno on my '99 was with flowmaster, K&N FIPK, & HPP3. It showed 218 in 2nd gear. Would have been a little higher in 3rd.

 

yah, i forget about the power loss between 99 and 00

 

what is the diff between the 99 and 00 engines?

 

well at www.aspracing.com you can enter in your weight and then your 1/4 mile speed and it will estimate your rear wheel horsepower for you. how accurate it is, well i don't know but horsepower is estimated by a few equations.
keep clicking around until you find the online dyno button on the top.