370Z Engine Specs

• Nissan's 370Z sports car, first available in 2009, comes in four trim levels: base, Touring, NISMO and Roadster. Mated to the 370Z's engine is either a six-speed manual transmission or an optional seven-speed automatic transmission that's available on all trim levels except the NISMO racing-bred version.

Base and Touring

• The Base and Touring trim levels of the 370Z come with the same engine option. The 3.7-liter V6 has 24 valves -- four per cylinder -- and dual overhead cams. The engine produces 332 horsepower at 7,000 rpm and 270 pound-feet of torque at 5,200 rpm, with a redline of 7,500 rpm. The engine's bore measures 3.76 inches and the stroke measures 3.39 inches, with total combustion chamber displacement measuring 3,699cc. The base and Touring models' engines have a 11.0 to 1 compression ratio.

NISMO

• The NISMO trim level also has a 3.7-liter V6 engine with dual overhead camshafts and 24 valves. Bore, stroke, displacement and compression ratio are the same as those in the base and Touring models. But the NISMO's engine produces up to 350 horsepower at 7,400 rpm and 276 pound-feet of torque at 5,200 rpm. Redline remains 7,500 rpm. The NISMO 370Z is fitted with high-performance parts from the Nissan Motorsports division, as such it's the version preferred by performance enthusiasts.

Roadster

• The 370Z Roadster comes with the exact same 3.7-liter V6 engine block. The engine has 24 valves and dual overhead cams, as well as a 3.76 inch stroke and a 3.39 inch stroke. The major difference between the Roadster's engine and the engine found in the Base and Touring trim levels is the Roadster engine's compression ratio, which is 11.1:1. The Roadster's engine can produce up to 332 horsepower at 7,000 rpm and 270 pound-feet of torque at 5,200 rpm.

Fuel Mileage

• The base, Touring and NISMO trim levels achieve an EPA-estimated 18 miles per gallon in the city and 26 on the highway with either the automatic or manual transmission, while the Roadster -- the convertible -- gets 18 and 25 miles per gallon also with either the automatic or manual transmission.