[LS short box]

It's 6.2 out of a 2013 Silverado. Small cam 225 intake / 230 exhaust. LS3 intake.

I had a similar L92 in a 73 Z28 and it did 420 hp on the chassis dyno. Ran great. Got great gas mileage. On the Power Tour couple years ago at mostly 60miles per hour it got 24 miles to the gallon. I've since sold the car. It was a great swap. It was featured in Car Craft magazine.