{"id":2617,"date":"2015-11-18T07:16:01","date_gmt":"2015-11-18T11:16:01","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=2617"},"modified":"2019-07-23T16:07:34","modified_gmt":"2019-07-23T21:07:34","slug":"toyota-supra-with-a-turbo-vortec-4200","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=2617","title":{"rendered":"Toyota Supra with a Turbo Vortec 4200 Inline-Six"},"content":{"rendered":"

\"Toyota<\/a><\/p>\n

When Toyota rolled this 1987 Supra out of their factory it was powered by a turbocharged inline-six engine with a five-speed manual transmission. Since then the current owner has made some serious changes but still maintained the overall the spirit of the factory drivetrain.<\/p>\n

\"Toyota<\/a><\/p>\n

Power comes from a GM LL8 Vortec 4200 all-aluminum inline-six sourced from a Chevy Trailblazer. It produces around 273 horsepower and 277 lb-ft of torque from the factory. The engine was installed with custom engine mounts made from 1.5″ x 1.5″ solid steel stock and 1\/8″ sheet metal and a custom rear sump aluminum oil pan. The engine was kept mostly stock except the fuel injectors were upgraded from the stock 30 lb\/hr to 80 lb\/hr.<\/p>\n

\"Toyota<\/a><\/p>\n

\"30<\/a><\/p>\n

The AR5 five-speed manual transmission from a Pontiac Solstice was connected to the engine with a bellhousing from a Hummer H3. The bellhousing ribs was ground down to fit the Supra transmission tunnel. <\/p>\n

\"AR5<\/a><\/p>\n

\"Hummer<\/a><\/p>\n

Power is boosted thanks to a Garrett GT3788VA turbocharger from a 2005+ Duramax. This type of turbo is a variable vane design which opens or closes based on oil pressure. The boost is controlled by a custom boost controller built off an Arduino board which piggy-backs off the throttle and map sensors. <\/p>\n

\"custom<\/a><\/p>\n

\"Garrett<\/a><\/p>\n

Although this Supra hasn’t been on the dyno I was able to find another Vortec 4200 that made 470 hp and 450 lb-ft of torque off 8 psi of boost. Granted it isn’t a perfect comparison since there can still be plenty of differences but it gives an idea of the power that can be made from these engines.<\/p>\n