Guest plainswolf Posted November 16, 2003 Share Posted November 16, 2003 http://www.chevyhiperformance.com/techarticles/83758/ Tech Articles GM Vortec 4200 I6 Specifications All Aluminum In-line six-cylinder Bore and stroke: 3.66x4.01 inches Displacement: 256ci/4.2L Compression: 10.1:1 Horsepower: 270 @ 6,000 rpm Torque: 275 lb-ft @ 3,600 rpm Block/head material: A356-T6 cast aluminum Ignition system: Coil-on plug, dual platinum electronics Fuel delivery: Sequential-port fuel-injection, electronic throttle control Recommended fuel: Unleaded regular Valvetrain: Four valves/ cylinder, dual overhead cams, variable cam phasing-exhaust cam Max. engine speed: 6,300 rpm Quote Link to comment Share on other sites More sharing options...
Guest BigE Posted November 17, 2003 Share Posted November 17, 2003 Yes, that engine is phenomenal. In fact, the Trailblazer/Envoy was entirely built around that engine. I've got a 7 page write up in Automotive Engineering Magazine about the development of that engine. Lost foam cast, variable cam timing, etc. Lot's of thought into it. What was really cool was the twin turbo one-off that GM did. Basically a modern Typhoon. Put down 500 plus through all four wheels. Droooooool Quote Link to comment Share on other sites More sharing options...
Guest Your Car is Slow Posted November 17, 2003 Share Posted November 17, 2003 Was one of the motors I was considering for the swap prior to finding an LT1 I couldnt pass up. Cost was on par with an LS1 however. Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted November 17, 2003 Share Posted November 17, 2003 This engine comes up quite regularly here. If the search function is working, you will find there are many problems with this engine in a Z. The engine is too tall for a Z bay, there is some issue with the oil pan being where the cross member wants to be and the bellhousing bolt pattern is unique vastly limiting transmission choices. There are a lot of electronics, including variable valve timing, that will complicate things. Being so new, the engine will undoubtably have a high buy in price (not exactly littering the pick and pull) and a limited (read expensive) after market. And the aftermarket will be important, otherwise you are installing a torquey truck motor in a sports car. Not my first choice. Hard to justify all the work when the V8 option is so available. Quote Link to comment Share on other sites More sharing options...
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