Build me a Small block

72challorange said
I never stated the Moroso Slide Rule was rwhp. It also seems to use at the "clutch" power using "factors". The factors for a 727(which uses lots)vs a 904 vs a 833 would be very different, nevermind unsprung weight(rotational masses). It is a tool that's all. It would seem to me that rwhp would be easier to predict, but again I'm not a rocket scientist.lol

Unfortunately I did a search online to "learn" but there were many arguments for both with dyno #'s and mphs to back them up. The only thing I see is that with your link the moroso slide rule is the most innacurate? Either way no sweat to me.

Tom

Just a thought on the percentage loss. A trans and differential will take a certain hp to turn no matter what engine is in front of them. There are other inefficiencies through the drivetrain such as brake drags and bearing drags that you can not get exactly right. Force is a factor of mass times acceleration not including drag/heat efficiency losses so I agree that if you spin them up faster they will take more hp but it is not proportional. A 165hp 318 will still overcome the same losses as a 600hp one. Maybe I am wrong but I think any percentage loss is just a SWAG.