Got the 632 crate engine working on the dyno today. Had to spend half the day taking the wiring harness apart and putting it back together because the customer wants to run dual wide band sensors and the GM harness wasn't designed to do that.

Once we got that wrapped up we decided to do a little shake down run. This thing is a beast. And by beast I mean it is head and shoulders above anything we've ever tested in the last 20 years. We've run 1000+ hp drag engines before but this engine is in another class. First off it is quiet. When we first fired it up it sounded like a passenger car engine. Most 1000 hp engines sound like a grenade inside of a steel drum. This one is super quiet and it is very smooth. But as soon as the dyno operator started a pull we both freaked out. It instantly jumped up to 1000 hp and the dyno operator had to yank the throttle back because it revved so fast it blew right thru our set point. Usually engines take some time to make a pull but this one just instantly went to 1000 hp.

After we shut the engine down we both just sat there and laughed since it was weirdest thing we have ever seen. Anyway, here is the chart. We only had it taking data to 5500 rpm since it was supposed to be a shakedown run. I saw the gauge read 1000 hp at around the 6000 rpm mark but the operator was already pulling the throttle back there. We'll make some full runs tomorrow.