Modified Corvette ZR1 on the dyno puts down 705HP

February 19th, 2009

A new Chevrolet Corvette ZR1 with some mild modifications put down over 705 horsepower and 689 ft-lbs of torque to the rear wheels at a shop in Miami, Florida. The car had a pulley changed on the supercharger to increase boost from the stock 10.5 psi to 18 psi. This ZR1 also has higher flowing headers and exhaust installed as well as an upgraded camshaft. Using a rough 13% driveline loss this ZR1 could be making upwards of 800HP at the flywheel. We should mention that the DynoJet dyno was reporting STD power, which is sometimes 3% higher than the SAE #’s that we like to report, and they were icing down the supercharger during the dyno pulls. Either way, we’re still looking at a substantial increase in power from the 530-540 HP the stock ZR1’s are putting down on DynoJets.

So how does an 800HP ZR1 run at the drag strip? The first set of runs at Palm Beach International Raceway lit the timing boards up with a 10.55 @ 137 MPH. With roughly an extra 150HP over a stock ZR1, we’re guessing they might not have performed the best run possible before they most likely were asked to leave the track. This ZR1 doesn’t appear to have a roll bar installed, making it way too quick to run at most drag racing tracks throughout the states. Any car running quicker than 11.50 in the 1/4 mile must have a roll bar installed to race at most tracks.

We’re still waiting for the complete timeslip and video, but in the meantime enjoy the dyno video and graph.

Update: Full timeslip and video of the drag strip runs have been added.

Modified Corvette ZR1 on the dyno puts down 705HP
2009 Chevrolet Corvette ZR1 Dyno

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