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Chevyman87 07-01-2012 09:29 PM

How many Horses?
I have a Chevy small block vortec with headers, a cold air intake, MSD cap and spark wires, Mallory ignition module and cap rotor, Summit coil (42,000 v), and platinum plugs (Bosch). I also omitted the AIR pump and pulley and the lines that ran to it. I also ran the pipes (true dual) with flow masters and no cats. I also have a 350 turbo tranny hooked up the motor. Everything else is stock. Any idea how many horses my truck is pushing? It's an 88 chevy 1500 1/2 ton standard cab pickup with 22's on it.

F-BIRD'88 07-01-2012 11:37 PM

If you want to know how much horsepower your truck is really making,
take your truck to the local drag strip and run it down the 1/4 mile
"test and tune" The MPH from your 1/4 mile time slip tells you the story.

now go weight the truck w/driver at a truck scale or junk yard scale.

Horsepower ='s .(00426xMPH x .00426 x MPH x .00426 x mph) x weight.
The is net as installed horsepower
Just like how a new car is rated.

For gross dyno brake horsepower
use .0045248 instead of .00426 in the calc.

Most full size pick up trucks weight well over 4000 lbs.

bigblockragtop 07-02-2012 06:23 AM

Never enough you will always want more. My stock 88 Suburban was around 250 though

my87Z 07-02-2012 10:10 AM

which vortec motor is it, if it is 96 and up then they came from the factory with 260hp, but they also had a "vortec" 350 in 93-95 that used the swirl port heads instead of the 906/062 vortecs that are so coveted. these were rated around 220-230hp.

if you do have the 96' and up vortec motor then with some headers and free flowing exhuast and cold air intake you could probably pick up around 15 maybe 20hp. so it could be around 275-280hp.

like what Fbird said, the only real way to know would either be to run it on a dyno or to run at the track and use one of the ET to wieght calculators

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