Introduction to How Horsepower Works;Definition;Measuring Horsepower and Graphing Horsepower http://auto.howstuffworks.com/horsepower.htm
How do you convert engine torque to horsepower? http://auto.howstuffworks.com/question622.htm
Kelly Blue Book Used Car Values Calculator http://www.kbb.com/
Martindale's Reference Desk---Scoll down this list to see the many available Automotive Calculators on-line. http://www-sci.lib.uci.edu/HSG/RefCalculators1.html#AUTO
Water Loss Calculator---"Gates Green Stripe II hose reduces cooling system maintenance and related costs because it maintains the proper water/antifreeze coolant balance for a longer time." http://www.gates.com/automotive/waterlosscalc.cfm
Tire and Wheel Upgrade Calculator--This calculator will show you which tire/wheel options are possible while mainting a rolling diameter that is as close to stock as possible. Simply answer the 6 questions http://www.mr2.com/FORMS/tire.html
Automotive Torque Specification---This site is intended to provide information on torque specifications on as many autos sold in the U.S. http://members.tripod.com/torquespecs/
Engine Displacement Calculators http://www.google.com/search?hl=en&q=Engine+Displacement+Calculator&btnG=Google+Search
Automotive Service Careers and Learning Resources - Scroll down the list to see many automotive calcular sites as well as many Automotive industry links. http://www.khake.com/page12.html
More about engine displacement http://www.answers.com/topic/engine-displacement
AXLE RATIO CALCULATOR http://www.quiknet.com/~ke6vut/axlecalc.html