Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
How much horsepower will my truck make with the following mods?
Bought a bone stock 99 single cab short bed Silverado with a 5.3L and 4l60E. It’s currently at the shop getting some mods and I should get it back mid April, just wondering how much HP should I expect? And what was my bone stock HP to begin with? Anyone know?
This is the first step of the build I’m taking, I plan on boosting it with a supercharger by fall of 2021. Any other additional mods that you guys recommend before doing so besides the obvious? TSP Stage 2 Supercharged Camshaft Cam Specs: 227/235, .641"/.649", 114 LSATSP 1 3/4 Long Tube Headers MSD Superconductor WiresNGK TR55IX Iridium Spark Plugs 77 Series K&N intake (temporary) LS9 MLS Head Gaskets LS Beehive Springs TSP PushrodsLS7 Lifters TSP Rocker ArmsBuilt 800 WHP transmission with heavy duty clutches, bands and shift kit (idk about it handling 800 hp though) Circle D 2500 Torque Converter 40k Tru Cool Transmission CoolerElectric FansMSD 2 step ARP HeadstudsBelltech Suspensión 4 link Caltrac drag racing barsMT Radials
And of course a Tune
Thanks for the first answers, and yes just posting here to read comments and thoughts since it’s my first build. I was told by the shop it would be close to 400. Hoping to make anywhere from 600-800 with some boost and a conservative tune by the end of the year.
4 Answers
- CactiJoeLv 74 weeks ago
You'll also have to change the transmission, look on the Summit Racing website for higher horsepower tranny, and you will have to change the ECM/PCM to a custom PCM that is specifically tuned for the mechanical upgrades or just run an earlier small block carbureted engine and intake manifold with an old school distributor that doesn't need a PCM to run the engine. Mechanical fuel pump, just unplug the electric pump in the tank and remove the check engine and service engine bulbs in the dashboard.
- Anonymous2 months ago
The increase will not be commensurate with the expense and adding the supercharger pretty much guarantees that the engine life will be significantly reduced without increasing the hp nearly as much as you think it will. But, to each his own. You can waste all that money if you want to. It's not my loss.
- Anonymous2 months ago
Nice truck. Over 400 hp with the mods. Put a modded ECU.
- RonLv 72 months ago
You're spending all that cash and the shop couldn't give you an estimate or are you just posting that here for some sort of validation? The idiots at the shop should know the base specs 270 with 315 torque. By the way, nice looking rig. Make sure the tune kills the top speed limiter
