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Expert: - 12/13/2009


Question
Hello I am wondering about how much horsepower my motor is putting out before I get it dynoed. What I have is a 1969 corvette 427. It is bored 30 over with 10to1 pistons, a 292 comp cam, a perfromer rpm intake, a holley 750, the heads are chevy h/p heads off a 1971 454 have been cut port and polished,and they are rectangled,with bigger valves, and roller rockers, also have ceramic coated headers, with a 50,000 volt hypertech distributor, and 8mm wires, also have a 3,000 stall on the back.I would like to know estimated horsepower. Thank you.

Answer
You probably have about 500 to 600 horsepower, but it's impossible to even estimate actual horsepower. Take it to the dyno, and use what they tell you.

Sorry, but without scientific measurement, there's no way to tell.

Best Wishes,

Dan Liddy
Sarasota, Florida

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Dan Liddy

Expertise

Anything concerning race cars, 20 years competition experience, Senior Competition Driver Instructor , car builder, mechanic, welding, fabrication, tuning , engine modifications, set up, suspension design. Specializing in Datsun/Nissan products. Please submit questions about RACE CARS ONLY. No street cars, no video game scenarios Thank you.

Experience

I have been racing for 20 years, I have been the Central Florida SCCA Regional Championship points for 5 years running, and won the championship in my class 2 times. During my first start in the 60's I won many solo awards and the State Championship Drags. I serve as a senior instructor for SCCA, and have taught in Mercedes AMG events at Daytona, and Dodge Viper Days at Sebring International. I have been in the thick of the competition for all of my career. At one time or another I have driven race cars at speeds nearing 195 MPH. It's quite a ride !

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