Ran my 99 5.3 at the track.

[Ronin]

I have a 99 Silverado reg cab long bed. 5.3 auto 2wd. It ran 15.5s at 88. Mods are Jegs muffler, Spectre cold air, HPP, free mods, Auto Zone electric fan. It has 3.42s with G80. I was surpirsed how much the truck weighed at the track scale. With half take of gas and some small tool boxes behind the seat it was 4350# with out me in it. My 93 Z28 was under 3400# without me in the car.
I am not complaining, this was a good time for running at Lebanon Valley Dragway. It has a higher elevation than sea level tracks. My other cars would go 2 or 3 tenths faster at New England Dragway with the same conditions. I am going to do a 3" cat back and go back when the weather is cooler. Maybe try an under drive pulley too. Try for 14.90s

[Fast305]

I have a 99 Silverado reg cab long bed. 5.3 auto 2wd. It ran 15.5s at 88. Mods are Jegs muffler, Spectre cold air, HPP, free mods, Auto Zone electric fan. It has 3.42s with G80. I was surpirsed how much the truck weighed at the track scale. With half take of gas and some small tool boxes behind the seat it was 4350# with out me in it. My 93 Z28 was under 3400# without me in the car.
I am not complaining, this was a good time for running at Lebanon Valley Dragway. It has a higher elevation than sea level tracks. My other cars would go 2 or 3 tenths faster at New England Dragway with the same conditions. I am going to do a 3" cat back and go back when the weather is cooler. Maybe try an under drive pulley too. Try for 14.90s

What was your 1/8 time and mph? How about your 60'?

Your truck is LIGHT in terms of a truck.

[XLR8N]

Thanks for posting up the weight. Mine will be similar in weight.

What is HPP?


you would pick up some good times by doing -

Custom tune
Long tubes
free flowing exhaust

[Pauly]

Thanks for posting up the weight. Mine will be similar in weight.

What is HPP?


you would pick up some good times by doing -

Custom tune
Long tubes
free flowing exhaust

Hypertech poer programmer.


A proper PCM tune will have this truck in the 14's.

peace
PAuly

[Ronin]

60' were 2.4s. I don't remember what the 1/8 mile was or where I put the slips. I thought about a custom tune but got the HPP used for $110 to my house. It did make a noticable difference.

[custm2500]

Well spend $250 on a custom tune and you will be in the 14s! Maybe 15.1 but it will help big time!

That truck isn't light, it is right where you would expect it.

[gmc406]

Not too shabby. What is the elevation now that you mentioned it? 90% of the people on here brag about their times and compare to other trucks, but fail to mention that they're at sealevel.

My truck runs 12.9's at 105mph in 2600 feet. Which is ~12.60's@~108mph. There are other things to take into consideration, but that's a long story. This will at least give you an idea, if the condiions were the same.

Vehicles with NOS or forced induction are affected less. There are convertion charts for these, but I can't find it.

Play around with it: http://www.iroc-zpostforum.com/NHRACF.htm

[Fast305]

Not too shabby. What is the elevation now that you mentioned it? 90% of the people on here brag about their times and compare to other trucks, but fail to mention that they're at sealevel.

My truck runs 12.9's at 105mph in 2600 feet. Which is ~12.60's@~108mph. There are other things to take into consideration, but that's a long story. This will at least give you an idea, if the condiions were the same.

Vehicles with NOS or forced induction are affected less. There are convertion charts for these, but I can't find it.

Play around with it: http://www.iroc-zpostforum.com/NHRACF.htm

Also take into consideration DA at the track. Depending on the weather, a track at 650 ft elevation can have a DA as high as 4000+.

Post a time slip and the tracks name and we can figure all the numbers. You might have 14s potential the way the truck sits now.

There is a DA calculator in the tools tab at Dragtimes.com

[gmc406]

You are correct. That's what I ment when I said there are other things to take into consideration. Many people don't understand the entire concept as a whole.

[custm2500]

For me you vehicle runs what the slip says. I understand the DA but you can't claim what you vehicle should run in my opinion.

[gmc406]

You have a point. A 14.00 second vehicle at sealevel compaired to a 14.00 second vehicle at 5000 feet, who has the faster vehicle? That's my point.

A person shouldn't really convert their times and then come on here and boast. I understand what you're sayin. I think people need to mention a little more info when they mention their times. Maybe not every little detail, but something as simple as elevation gives a better idea.

[XLR8N]

You have a point. A 14.00 second vehicle at sealevel compaired to a 14.00 second vehicle at 5000 feet, who has the faster vehicle? That's my point.

A person shouldn't really convert their times and then come on here and boast. I understand what you're sayin. I think people need to mention a little more info when they mention their times. Maybe not every little detail, but something as simple as elevation gives a better idea.

If you are running a 12.50 at 2600 ft and guys similar are running 12.2s at sea level. This is a good way to figure out the difference.

[Fast305]

You have a point. A 14.00 second vehicle at sealevel compaired to a 14.00 second vehicle at 5000 feet, who has the faster vehicle? That's my point.

A person shouldn't really convert their times and then come on here and boast. I understand what you're sayin. I think people need to mention a little more info when they mention their times. Maybe not every little detail, but something as simple as elevation gives a better idea.

I agree, which is why I usually post the slip and correct for COMPARISON.

Also lets say someone goes to the track in 40*, 30% humidity weather and runs say a 15.5...Then performs $1500.00 in mods and goes back to the track on a 105*F, 40% humidity day. Now they run a 15.1. Now they are discouraged from the little improvement they see. When the truck in reality is substantially quicker.

[Ronin]

Correction factor is good for racers that go to more than one track. If you run 12.0 at one track that is slow and go to a faster track with the same set up you may be racing in another class, need more safety equipment, change jetting, etc. Car Craft would always post the correction factor after they ran one of their project cars at a high elevation track in CA. It gives people an idea of what they would run with the same set up if they duplicated the build (depending on their track conditions). I am not going to dump a lot of speed parts on the truck. I bought it to haul stuff and pull my trailer. Some of the performance stuff helps with mileage and that is a plus. I will post what I run if I go back in cooler conditions.

[bigbob6988]

60' were 2.4s. I don't remember what the 1/8 mile was or where I put the slips. I thought about a custom tune but got the HPP used for $110 to my house. It did make a noticable difference.

You got ripped off. As did I when I bought one back in the day. Resell it, get a custom tune and you should be able to get 14's no problem.