Can a 5.3L dyno as high as LS1?
03-24-2008, 12:31 PM
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Can a 5.3L dyno as high as LS1? I was challenged (but i backed out since i have nothing to prove) by a guy with an 07 silverado with a 5.3L motor.
He saw my dyno tune results on my camaro that showed 328/364 and called b/s on the numbers. he obviously has no clue what hes talking about because he said that those numbers were way too high for my mods and engine.
Now he claims (and showed dyno sheet from the same place that tuned my car) that his truck stock put 300/316 to the wheels. his challenge was that with the same mods, he would dyno higher than me. He wanted to put $500 on it.
What do you guys think? On the silverado boards they all called b/s on his numbers, saying that they with the same truck/motor were putting anywhere from 240-270 to the wheels.
Would that have been an easy $500 for me?
He saw my dyno tune results on my camaro that showed 328/364 and called b/s on the numbers. he obviously has no clue what hes talking about because he said that those numbers were way too high for my mods and engine.
Now he claims (and showed dyno sheet from the same place that tuned my car) that his truck stock put 300/316 to the wheels. his challenge was that with the same mods, he would dyno higher than me. He wanted to put $500 on it.
What do you guys think? On the silverado boards they all called b/s on his numbers, saying that they with the same truck/motor were putting anywhere from 240-270 to the wheels.
Would that have been an easy $500 for me?
03-24-2008, 11:49 PM
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they can all use the same parts but hes down on displacement... obviously the 5.7 will have more power then the 5.3 if the same parts are used. As will a 6.0 have more power then a 5.7. Theres no way he made 300 to the wheels with a stock 5.3. Maybe with a 75 shot of nitrous, but thats it!
03-25-2008, 12:49 AM
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I have to agree, if his truck just had bolt ons and those big *** truck tires there is no way he got 300rwhp...unless he got a factory freak. There is occasion when people get those and they perform better than expected, but to answer your question, my answer is unlikely...very unlikely. Especially given the differences in heads, intakes, cams, etc.
03-25-2008, 01:06 AM
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well that all makes me feel better. I decided not to go up against him since this "competition" seemed more like a ricers way out. he wouldnt race me (well he said he will for pinks when he gets his TT kit, ROFL).
The way i see it, IF he got 300 rwhp bone stock, then with the same mods he would come close to my numbers. Even if i won (and the money isnt a big deal), he would still talk ish to me saying that my big and mighty LS1 BARELY beat him. either way, I dont accomplish what i wanted.
besides, when/if he ever gets it tuned, he and everyone else will know what hes putting to the rear wheels, and that will be enough.
The way i see it, IF he got 300 rwhp bone stock, then with the same mods he would come close to my numbers. Even if i won (and the money isnt a big deal), he would still talk ish to me saying that my big and mighty LS1 BARELY beat him. either way, I dont accomplish what i wanted.
besides, when/if he ever gets it tuned, he and everyone else will know what hes putting to the rear wheels, and that will be enough.
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03-25-2008, 02:03 AM
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thanks jessedale98, thats one way of putting it.
yea this guy wont race me. he knows that he weighs 2k lbs over me, so even if his motor was slightly more powerful Id still blow him away. I have a weight advantage, aero advantage, and traction advantage (i have ET streets).
Both of us dynoed at the same place, using a dynapack dyno that is properly and accurately tuned. They always say flywheel hp, even if it isnt. I found that this is because it CAN calculate flywheel hp, and I now wonder if that what this guy posted. From what ive heard, the TCF number indicated whether its RW or flywheel, and a "1" indicated drive wheel.
here is his thread on the truck forum:
http://www.gm-trucks.com/forums/inde...1&hl=dyno&st=0
notice how he cut off all other info on the sheet...heres mine from the same place:
yea this guy wont race me. he knows that he weighs 2k lbs over me, so even if his motor was slightly more powerful Id still blow him away. I have a weight advantage, aero advantage, and traction advantage (i have ET streets).
Both of us dynoed at the same place, using a dynapack dyno that is properly and accurately tuned. They always say flywheel hp, even if it isnt. I found that this is because it CAN calculate flywheel hp, and I now wonder if that what this guy posted. From what ive heard, the TCF number indicated whether its RW or flywheel, and a "1" indicated drive wheel.
here is his thread on the truck forum:
http://www.gm-trucks.com/forums/inde...1&hl=dyno&st=0
notice how he cut off all other info on the sheet...heres mine from the same place:
03-25-2008, 02:44 AM
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yea...well the truck guys called BS on him, and whats funny is this challenge started off with him calling BS on my numbers. he repeated to me exactly what they said to him. What he didnt realize is that my numbers are on the low side for what ive done.
03-25-2008, 03:07 AM
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11-12-2008, 02:12 AM
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That is BS, a 5.3 won't pull anymore than 240-260HP stock at the WHEELS. I own a Monte Carlo 07 SS and there's no way it's coming close to the 298HP my Z28 pulled at the wheels when stock, and nowhere near the 380HP my Z28 currently sits at. As I recall, the 5.3's now have LS6 heads on them, but it still doesn't have the cam or displacement of a LS1 motor.
Also times is a reflection of traction, it's trap speed that says what kind of power you make. If you take 2 cars and 1 spins like mad and does a 13.5 @ 109 and another that does 13.5 @ 100mph, which has more power?
Also times is a reflection of traction, it's trap speed that says what kind of power you make. If you take 2 cars and 1 spins like mad and does a 13.5 @ 109 and another that does 13.5 @ 100mph, which has more power?
11-14-2008, 05:53 PM
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ive researched this ALOT in the past month due to the 5.3's beiung a dime a dosen and my ls1 croaked...mod for mod about a 20-25rwhp difference in a car...in a truck with big tires even more...
