How does my Dyno sheet look? Opinions?

[Toronto]

Hello all,

Recently went to a car meet and shared my dyno print out with some other LS enthusiasts… I also shared what my car put down to the wheels and they all agreed my car must’ve been running on a bad tune. I paid good dollar for the tune a year ago in august and the humidity was horrible. I posted a thread up on here and i’m unsure of how much timing my tuner added. I’ve been looking at getting the car retuned at a different shop. Anyways wanted to share my print out here to see if y’all could possibly identify anything “weird” on my sheet. Car has a btr stage 3 cam, ported heads and a lsxr intake mani… with all the other supporting mods lts cai tuned on 94octane etc etc

[joshnmn]

L99 or LS3? Pretty stout numbers either way. I would expect 20 or so more numbers for a LS3 car. Looks like they cut it off soon too. If you did all the valve train mods you should be able to take it out to 7k. Won't make more power, but it'll make good power longer. It was over 450 rwhp for over 1500 RPM. Nice!

[FasNuf]

The most important thing is how does it feel when you drive it? The lines look a little shaky for 5 smoothing but, maybe he didn't take off traction control before the pull or something was wrong on his end.

[Toronto]

Originally Posted by joshnmn

L99 or LS3? Pretty stout numbers either way. I would expect 20 or so more numbers for a LS3 car. Looks like they cut it off soon too. If you did all the valve train mods you should be able to take it out to 7k. Won't make more power, but it'll make good power longer. It was over 450 rwhp for over 1500 RPM. Nice!

Yes it’s a LS3. I was expecting yea atleast 480 right.. yes valve train was completely done with smith brothers trunnion rocker arm upgrade…

[Toronto]

Originally Posted by FasNuf

The most important thing is how does it feel when you drive it? The lines look a little shaky for 5 smoothing but, maybe he didn't take off traction control before the pull or something was wrong on his end.

Car drives good but i don’t have a comparison.. i haven’t driven another cammed ls3 b4

[MSgt O]

I have almost the same mods, mine was at 463 post tune

[acammer]

Without a baseline on the same dyno to compare to, you're trying to measure between two points, but only knowing one of them! If that dyno reads high, that's pretty bad, if it reads low that might be great. For the mods that seems in the realm of what I would expect. The BTR cam is pretty modest, but you do have good supporting mods, so anywhere in that 460-490 range would seem right. The conditions during when it was tuned should be more or less a non-factor, the ECU compensates for those things, and the dyno applies a correction factor. So the car ought to make the same number on the dyno at sea level in the winter with nice dry air as it does in Denver in August with 80% humidity.

[Leadsled]

It really depends on how it feels, I have stock Manifold and stock heads with built valve train and made 465whp. Dynos are also known as heart breakers… My opinion is, Go race some buddy’s claiming the 500-535whp range and make your opinion on your car.

Full Bolt on Gen2 5.0 on E85 should be a good race for you. Or a FOB 6th gen. To give you an idea.