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Stewart Way · 09-15-2007, 11:24 AM

Dick
You stated that an engine makes the same HP regardless of what car its in. Is that really true? I don't know but here is what I think. It varies. We have been doing dyno work lately and as you know if you rev the engine on an unloaded dyno it might make 60-70 hp. It takes resistance to develope torque. Now load the dyno for a 300 rev/sec pull and then a 600 rev/sec pull. Do you get the same hp numbers? No you don't. So if pulling at different rates nets different hp then doesn't it stand to reason that the same engine in a 3000lb car would make different hp than in a 4000 lb car because it will rev or pull at a different rate. Even a glide vs turbo 350 vs 4 speed could cause a motor to make different hp in the same car. No I don't think we need to consider all those factors in hp numbers but it does make a difference, I think.
I am no dyno expert for sure. These are just my thoughts and observations from the dyno and there may be something I'm missing that makes it worth about what you paid for it. I know I have gotten in trouble thinking before.

09-15-2007, 11:24 AM	#46
Stewart Way Member Join Date: Aug 2003 Location: Atlanta Posts: 476 Likes: 20 Liked 70 Times in 22 Posts	Re: AA/S AAA/S and Class consolidation Dick You stated that an engine makes the same HP regardless of what car its in. Is that really true? I don't know but here is what I think. It varies. We have been doing dyno work lately and as you know if you rev the engine on an unloaded dyno it might make 60-70 hp. It takes resistance to develope torque. Now load the dyno for a 300 rev/sec pull and then a 600 rev/sec pull. Do you get the same hp numbers? No you don't. So if pulling at different rates nets different hp then doesn't it stand to reason that the same engine in a 3000lb car would make different hp than in a 4000 lb car because it will rev or pull at a different rate. Even a glide vs turbo 350 vs 4 speed could cause a motor to make different hp in the same car. No I don't think we need to consider all those factors in hp numbers but it does make a difference, I think. I am no dyno expert for sure. These are just my thoughts and observations from the dyno and there may be something I'm missing that makes it worth about what you paid for it. I know I have gotten in trouble thinking before.