View Full Version : Stock Horsepower

05-02-2002, 09:56 PM
You know what I just figured out, correct me if I am wrong or bash me if I was just an idiot before, but the 190 horsepower that everyone thinks these 4.3ls have stock, is really like 148 rear wheel and 190 fly. What's up with that. Am I the only one that didn't know about this? Every place that dynoed this engine came up with around 148-170. Anybody know about this?

05-03-2002, 01:40 AM
that is correct. You will lose power once you start to transfer power through any gear box. An auto is really bad since the TC is nothing more than a fuild pump. The car makers claim the flywheel hp's so that it looks bigger.

05-03-2002, 04:12 AM
Yes, typically you will loose 15-20% of your hp from the flywheel to the rear wheels. 20% of 190 is 152 hp. Close to your 148 run. I use that as a rule of thumb to estimate rwhp for my stuff.

05-03-2002, 06:46 PM
yes i realized th ssame thing wen i saw dynoed numbers on an LS1 camaro i said to someone doesnt this look a little low and they told me about 20% loss.