I know the basics on the SAE Net Horsepower v SAE Gross Horsepower but could someone tell me what the Gross HP would be for my SAE Net Horsepower rated 1977 Chrysler LeBaron ? It is rated at 145 Net HP on the 318LA engine , I know before the change in 1971 or 72 The 1970 Dodge Dart with basically the same 318LA engine minus emissions was rated at 230 HP So is it still basically the same just a different methodology used ? I know the emission components added lowered Horsepower but by how much ? I am just trying to figure out what my cars power would be in 1970 pre SAE but with the smog/emissions I have on my 1977 LeBaron. Thanks hope I did not confuse.