Tow Test - Big Blocks VS. Diesels
Power
This was our first chance to try out the 6.5L turbodiesel and the Vortec 7400V-8 SFI. The Vortec 7400 replaced the throttle-body-injected L19 7.4, which made 230 hp at 3,600 rpm and 385 lb-ft of torque at 1,600 rpm. The 7400 was available for 3/4-ton Suburbans and makes 290 hp at 4,000 rpm and 410lb-ft of torque at 3,200 rpm. The turbodiesel has more peak torque (430 lb-ft at 1,800 rpm) but less horsepower (195 hp at 3,400 rpm).
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